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Posted by National Lock Supply on Sep 29th 2026
Quick answer
Austin has three local sources worth calling: Cothron's Security Professionals, Architectural Division 8 and LaForce, LLC. Cothron's is the one that publishes a contract hardware counter with same-day pickup and next-day delivery, which makes it the first stop when a door is failing today. National Lock Supply (NLS) fits buyers who would rather order online from published prices, ship to the site and confirm function, handing and key… Read more
Posted by National Lock Supply on Sep 28th 2026
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Detex sells three product lines that get confused because the part numbers look alike. EAX is a stand-alone exit or door-prop alarm that mounts on the door or wall (EAX-500 for unauthorized exits, EAX-300 for propped doors, EAX-2500 for AC/DC hardwired). ECL is an exit control lock: a deadbolt panic device with a 100 dB alarm built in (ECL-230D, ECL-230X, and the fire-rated ECL-600). V40 and V50 are Value Series rim and surface vert… Read more
Posted by National Lock Supply on Sep 25th 2026
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Dallas is a spread-out market, so the right supplier often depends on which side of the metroplex the job sits. Dallas Door & Supply Co., RDL Supply (CBX Solutions), AO Door and American Doors (Dallas) cover the north and central counters, and Saginaw Surplus serves the Fort Worth side. National Lock Supply (NLS) is the choice for buyers who want to order online from published prices, ship to a site anywhere in DFW and check func… Read more
Posted by National Lock Supply on Sep 24th 2026
Quick Verdict
Match four things, in this order: the brand stamped on the bow, the keyway or section stamped on the blade, the pin count, and whether the cylinder takes a standard blank or a master section. The brand and keyway tell you the family. The pin count picks the part number (Sargent 265/275 are 5-pin, 6270/6275 are 6-pin, 7285B is 7-pin). The section decides whether the key operates one cylinder or several. A blank cut on a master sectio… Read more
Posted by National Lock Supply on Sep 23rd 2026
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San Diego buyers have a handful of local sources and one naming trap: Philadelphia Hardware Group (PHG) is based in San Diego despite its name. For same-day pickup, PHG and Grah Safe & Lock run counters; Doortek International and General Millwork Supply serve project and quote-driven work. National Lock Supply (NLS) is the option for ordering online from published prices, shipping to San Diego and getting function, handing and ke… Read more
Posted by National Lock Supply on Sep 22nd 2026
Quick Verdict
Arrow is the value line: use it where you need a commercial-rated lock at a lower cost than a heavy-duty Grade 1 spec, which means multifamily, light commercial and budget retrofits. For knobs, MK is Grade 2 with wrought Tudor, Darrin or Ball knobs, and RK is the economy Grade 2 knob. For levers, QL is Grade 1 and MLX is Grade 2, both with a 10-year mechanical warranty, and RL is the economy Grade 2 lever. BM is the mortise lever li… Read more
Posted by National Lock Supply on Sep 21st 2026
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San Antonio has four local counters that stock commercial hardware, so most urgent work can be solved in person: Architectural Division 8, ACME Commercial Hardware, Texas Lock & Door Closer and Dumas Hardware. National Lock Supply (NLS) is the pick when you want to order online from published prices, ship to the job site and confirm function, handing and keying with a technician before you pay. The national trade houses at the en… Read more
Posted by National Lock Supply on Sep 18th 2026
Quick Verdict
Accentra is the name National Lock Supply lists the Yale commercial line under, and the model numbers carry over: a "Yale 2100" is the Accentra (Yale) 2100 rim exit device. Match the part by model number first, then by door. Wide stile doors (4-1/2" minimum stile) take the 2100 or 7100. Narrow stile aluminum doors (2" minimum stile) take the 7200. Grade 2 cylindrical openings take the 4600LN family. Heavy-duty mortise openings use t… Read more
Posted by National Lock Supply on Sep 17th 2026
Quick answer
For commercial door hardware in Philadelphia, split the work by urgency. National Lock Supply (NLS) fits buyers who want to order online from published prices, ship to a job site or shop, and get a technical answer on function, handing or keying before the order goes out. Woodland Building Supply in West Philadelphia and Delaware County Supply in Boothwyn cover the counter side, which matters when a door has to be fixed before the bu… Read more
Posted by National Lock Supply on Sep 16th 2026
Quick Verdict
Adams Rite splits its 8000 series by what the door and frame give you. 8800 is the narrow stile rim device (Starwheel interlocking) for aluminum doors, single or pairs with a mullion. 8400 is the narrow stile mortise device for single aluminum doors. 8600 is the narrow stile concealed vertical rod device with a top bolt and a bottom bolt, for single doors or pairs. 8700 is the same rim design built for hollow metal and wood doors, w… Read more
Posted by National Lock Supply on Sep 15th 2026
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For Phoenix, National Lock Supply is the one to call when you want to order commercial door hardware online at published prices, with fast shipping and a person who will check function, handing and keying before you buy. For pickup in the Valley, Trudoor in west Phoenix lists a sales counter and will-call, C&I Show Security Systems in Tempe offers counter, will-call and delivery, and Advanced Lock Service is a locksmith shop with… Read more
Posted by National Lock Supply on Sep 14th 2026
Quick Verdict
A mechanical push button lock (cipher lock) needs no power, no wiring and no batteries. One code, set and changed on the keypad, opens the door. Pick the family by door prep first, then by function. Cylindrical prep (ASA 161 bore): Simplex 1000 knob (1011, 1012) or the L-series lever (LL1011, LR1011). Same bore with a key override: LR1021S, LR1021R, LR1041C, or the 5000 series (5021). Aluminum storefront with an Adams Rite deadlatch… Read more
Posted by National Lock Supply on Sep 11th 2026
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Houston is spread out, so the right supplier depends on where the job is and how fast you need the part. National Lock Supply is the choice for online ordering at published prices, fast shipping and pre-order help on function, handing and keying. For pickup, KeylessCity Hardware on the Gulf Freeway lists a same-day retail counter, and C.K.I. Wholesale Lock Supply, Acme Architectural Hardware, Himmel's, American Doors and Coastal Door… Read more
Posted by National Lock Supply on Sep 10th 2026
Quick Verdict
A commercial thumbturn takes one of three forms, and ordering starts with picking the right one. A thumbturn cylinder replaces the key cylinder on the inside of a mortise lock or rim device (Schlage 09-900 and 09-905, BEST 1EA6A4, Falcon 985T, Adams Rite 4066). A thumbturn deadbolt has the turn built in (Sargent 485, Falcon D251 and D261, Accentra D262, Schlage L460). A trim thumbturn is the loose knob on a rose or escutcheon (Schla… Read more
Posted by National Lock Supply on Sep 9th 2026
Quick answer
Chicago buyers have more local options than most cities, mostly spread across the north side and the suburbs. Use National Lock Supply when you want published prices, ordering without a dealer account, quick shipping and a person to check function, handing and keying before you buy. Use Anderson Lock Company, Ashland Lock & Security Solutions or Goldy Locks when you want a counter, will-call or an installer behind the hardware. A… Read more
Posted by National Lock Supply on Sep 8th 2026
Quick Verdict
Corbin Russwin hardware is ordered by series plus function number plus trim code. ML2000 is the mortise lock, and the digits after ML20 set the function: 10 passage, 30 privacy, 51 and 54 entrance or office, 52 classroom intruder, 55 classroom, 57 storeroom, 70 full dummy. ED5200 is the standard-stile rim exit device (4-1/2" minimum stile), ED4200 is the narrow stile version (2" minimum stile), and ED5200A is the fire rated build. D… Read more
Posted by National Lock Supply on Sep 4th 2026
Quick answer
In Los Angeles, call National Lock Supply when you want to order commercial door hardware online at published prices, with fast shipping and spec support on function, handing and keying. Call a local supplier when you need a counter or a jobsite drop: USA Fire Door in Gardena lists free jobsite delivery, and Access Hardware Supply in Rancho Cucamonga offers counter service, will-call and delivery on the Inland Empire edge of the metr… Read more
Posted by National Lock Supply on Sep 3rd 2026
Quick Verdict
Falcon door hardware splits into five product lines that each have their own numbering. Exit devices: 25 series (25-R rim, F-25-R fire rated rim, F-25-M fire rated mortise) for 4" stiles, 24 series for 3-1/2" narrow stiles, 1690 concealed vertical rod, and 1790, 19 and 2090 as economy rim and crossbar devices. MA series mortise locks, with AE77012 Napa escutcheons that are ordered by a two-letter opening code (OK, OT, OC, IE, IT). W… Read more
Posted by National Lock Supply on Sep 2nd 2026
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For New York City buyers, the split is simple. National Lock Supply is the pick when you want to order online from a published catalog and have it ship fast, with technical support on function, handing and keying before you buy. Local counters such as Harold C. Wolff, Blaustein Hardware and M&D Door and Hardware fit same-day pickup, will-call and emergency replacement in Manhattan, the Village and Brooklyn. Standard Wholesale Har… Read more
Posted by National Lock Supply on Sep 1st 2026
Quick Verdict
Sargent door hardware sorts into four families, and the model number tells you which. 80 Series (8800, 8700, 8600, AD8400, 8900) are Grade 1 exit devices, and the 700 series are their trims. 8200 is the Grade 1 mortise lock. 10X and 11 Line are the cylindrical (bored) locks. 351 and 1431 Powerglide are the surface closers. Order by three things: the family, the function or arm package suffix, and the keyway (LA is the standard Sarge… Read more
Posted by National Lock Supply on Aug 31st 2026
Quick Verdict
Three decisions, in order. Side: a regular arm mounts on the pull side; top jamb and parallel arm mount on the push side, so exterior out-swinging doors get one of those two, keeping the closer inside. Stop: if a wall, floor, or overhead stop exists, order a plain arm (LCN REG or Rw/PA, EDA, Norton PR7500, Sargent 351 UO); if no stop is possible, buy it in the arm (LCN CUSH, SCUSH with a spring for wind, Norton CPS7500, Sargent 351… Read more
Posted by National Lock Supply on Aug 28th 2026
Quick Verdict
Pick the chassis by grade and door, then build the number. Exterior, corridor, restroom or classroom lever: ND, Grade 1, doors 1-5/8" to 2-1/8". Private office, closet or tenant interior lever: ALX, Grade 2, IC-ready, doors 1-3/8" to 1-3/4" (AL is the line ALX replaced). Mortise pocket, or lever plus deadbolt in one case: L9000, Grade 1, 2-3/4" backset only. Auxiliary deadbolt: B600 (Grade 1) on exterior and storeroom doors, B500 (G… Read more
Posted by National Lock Supply on Aug 24th 2026
Quick Verdict
A US mortise cylinder is a threaded brass body, 1-5/32" diameter at 32 threads per inch, that screws into the lock front and turns a cam at its back. Three choices decide the order: length, cam, keyway. Length runs 1" to 2-1/2" in 1/8" steps: 1-1/8" fits a 1-3/4" door with a standard mortise lock, 1-1/4" to 1-3/8" covers 2" doors and thick trim, 1-1/2" and up is thick doors and deep-set trim. The cam must match the lock, not the cyl… Read more
Posted by National Lock Supply on Aug 19th 2026
Quick Verdict
Measure the pocket already cut in the frame and buy the strike that matches it; never recut a frame to suit a strike. A 4-7/8" x 1-1/4" square-corner pocket is the ANSI A115 prep on nearly every hollow metal frame: Schlage 10-025 (no box) where the frame has a factory mortar guard, 10-072 (with box) on wood frames and L9000 mortise locks, or Don-Jo ST-261 when a 13-gauge commodity plate is enough. A 2-3/4" x 1-1/8" pocket is the T-s… Read more
Posted by National Lock Supply on Aug 17th 2026
Quick Verdict
Pick the series from the latch, then the frame, then the fire label. Cylindrical latch to 5/8": 5000C in a cut frame, 8000 when the frame cannot be cut; the same latch on a labeled frame: 4500C cut-in or 8300 no-cut. Cylindrical latch at 3/4": 5200, with in-frame horizontal adjustment. Mortise latch without deadbolt on a labeled metal frame: 8500. Mortise with a 1" deadbolt, or a lock not yet identified: 1006. Rim exit device: 9400… Read more
Posted by National Lock Supply on Aug 14th 2026
Quick Verdict
A Von Duprin number reads left to right in a fixed order: electrical prefix, series, function suffix, fire suffix, trim, length, finish, hand. "RX-QEL-99-L-F 996L-06 3' 626 RHR" is a grooved-case 99 rim device with a request-to-exit switch and quiet electric latch retraction, 996L lever trim in the 06 design, fire exit hardware, sized for a 2'4" to 3' door, satin chrome, right hand reverse. Three rules settle most orders. The two di… Read more
Posted by National Lock Supply on Aug 12th 2026
Quick Verdict
Kawneer entrances carry one of three devices. The 1686 is a concealed vertical rod device: rods and latches sit inside the lock stile and latch into the transom bar and threshold. The 1786 is a rim device: a 5/8-inch throw latch bolt in the housing catches a strike on the jamb or a removable mullion. The Paneline swaps the touchbar for a push panel. Identify by where the door latches, not by the bar: the 1686 and 1786 share one hous… Read more
Posted by National Lock Supply on Aug 10th 2026
Quick Verdict
Pick the lock family first, then the indicator code. On a door with a latching lockset that also serves as egress, use a privacy lockset with the window built into the trim (Schlage ND40S OS-OCC, Arrow APL02, Yale AUYPL02, or Corbin Russwin CLX3320 V30 in cylindrical; Schlage L9040 OS-OCC or Sargent 8265 plus the 185P plate in mortise) so the occupant leaves in one motion. On a push/pull door, or where the AHJ accepts an auxiliary b… Read more
Posted by National Lock Supply on Aug 7th 2026
Quick Verdict
Specify a floor closer when the leaf is all-glass or has no rail for a closer arm, must swing both ways, may show nothing on its face or header, or outweighs what butt hinges and a surface closer should carry. A dormakaba BTS80 controls 660 lb and 4'-6" of width from a 2-3/8" case; a BTS75V controls 260 lb from a 2" case for thin slabs. Center-hung hardware (BTS80A, Rixson 370, Ives 7255) is the answer for double-acting and glass do… Read more
Posted by National Lock Supply on Aug 5th 2026
Quick Verdict
An overhead door stop mounts on the door's top rail and the frame head and absorbs the door's momentum at 85 to 110 degrees, before the closer arm, hinges or wall take the hit. Mount: surface (Glynn-Johnson 90 and 450, Rixson 9, 10, 55 and 8 series) for retrofits; concealed (Glynn-Johnson 100 and 410, Rixson 1 and 6) for new doors, double-acting doors and aluminum storefront. Function: stop-only (S) is the only mechanical function a… Read more
Posted by National Lock Supply on Jun 17th 2026
Senior living and behavioral-health facilities specify door hardware around one overriding requirement the rest of commercial work does not face: patient self-harm and elopement risk. That drives two specialized hardware families. Anti-ligature (ligature-resistant) hardware uses sloped, closed, or recessed shapes that give nothing to attach a cord to, on the doors of at-risk patient areas. Delayed egress and controlled access manage wander and el… Read more
Posted by National Lock Supply on Jun 15th 2026
Restaurant door hardware lives in a harsh environment: grease, steam, frequent cleaning with caustic chemicals, and traffic counts that wear residential-grade hardware out in months. The spec that holds up is BHMA Grade 1 in 630 satin stainless steel for corrosion resistance, heavy-duty closers tuned for high cycle counts, panic hardware on every required exit, and kick or armor plates on doors that take cart and foot abuse. The split that matter… Read more
Posted by National Lock Supply on Jun 13th 2026
In Florida, commercial door hardware on exterior openings has to do two jobs the rest of the country does not require: survive hurricane wind pressure and resist windborne-debris impact. The governing documents are the Florida Building Code (FBC) and, in the High-Velocity Hurricane Zone (HVHZ, meaning Miami-Dade and Broward counties), a product-specific Miami-Dade Notice of Acceptance (NOA) or a Florida Product Approval. The hardware that qualifi… Read more
Posted by National Lock Supply on Jun 12th 2026
A house of worship has to do two things that pull in opposite directions: welcome the public during services and lock down hard against a threat the rest of the time. The hardware that resolves this is a layered access plan, with a controlled main entry on access control, fail-secure electric strikes or electrified locks on staff and child-area doors, panic exit devices on every assembly exit for code-compliant egress, and a lockdown function tha… Read more
Posted by National Lock Supply on Jun 10th 2026
Government and municipal door hardware adds a procurement layer on top of the normal commercial spec: domestic-manufacture requirements (Buy American), GSA approval on certain federal work, and graduated security levels tied to the building function. The hardware itself is BHMA Grade 1 commercial, but on public projects the sourcing and documentation decide whether a product is acceptable, not just its performance. Most major US-made hardware (Sa… Read more
Posted by National Lock Supply on Jun 9th 2026
Fail-safe means a device unlocks when power is lost, and fail-secure means it stays locked when power is lost. The choice is a life-safety and security decision made per opening, not per building. One rule resolves most doors: fire, egress, and stair doors that must release on alarm are fail-safe, while perimeter and secured interior doors are fail-secure, because a fail-secure door still allows free mechanical egress from the inside through the… Read more
Posted by National Lock Supply on Jun 7th 2026
Every commercial hardware order requires a finish code, and there are two systems still in use. The older US numbering (US3, US26D, US10B) and the BHMA/ANSI A156.18 codes that replaced it (605, 626, 613) describe the same finishes, but the BHMA code is the current standard while the US code is the legacy shorthand most of the trade still speaks. The two finishes you will order most are 626 (satin chrome, formerly US26D) for interior commercial ha… Read more
Posted by National Lock Supply on Jun 5th 2026
A function code defines how a commercial lockset behaves: which side locks, whether the outside lever is rigid or free, and whether a key or a thumbturn controls it. You cannot order a commercial lock without choosing one. The ANSI/BHMA function names (Office, Classroom, Storeroom, Privacy, Passage, and a dozen more) are standardized in A156.2 for cylindrical locks and A156.13 for mortise locks, but each manufacturer also assigns its own catalog… Read more
Posted by National Lock Supply on Jun 4th 2026
A keyway is the shaped slot a key blank fits into, and it is the single factor that decides which cylinders can share a key. The keyway is what lets a key turn a lock at all, while the pinning inside the cylinder is what makes it the right key. Commercial keying really comes down to three decisions made in order: the keyway family (Schlage C, Sargent LA, Corbin Russwin 59/60, Yale, or a high-security keyway), the cylinder format (standard mortise… Read more
Posted by National Lock Supply on Jun 2nd 2026
A bank or credit union branch is a layered-security building, and the door hardware has to reflect that layering. The entry is an access-controlled mandatory vestibule, the teller line and back-office doors run high-security cylinders and electrified locks, the vault and cash-handling perimeter use delayed egress, and the after-hours ATM lobby runs on its own access-control schedule. The principle that ties all of it together is defense in depth… Read more
Posted by National Lock Supply on May 22nd 2026
Migrating a 200-door portfolio from brass keys to electronic credentials takes 12-18 months when done well, and stalls at month 6 when done badly. The portfolios that finish on time pick the credential platform first, then sequence hardware replacement in waves based on door risk and traffic, not by floor or building. Plan to spend 1,200 per opening fully loaded (hardware + labor + commissioning + credentials). Plan for the IT and tenant communic… Read more
Posted by National Lock Supply on May 20th 2026
NFPA 80 requires every fire-rated door assembly in a commercial building to be inspected annually by a qualified person. The inspection covers 13 items defined in Chapter 5: labels, gaps, hardware, glazing, frame, latch, closer, signage, and field modifications. Deficiencies must be repaired without delay. Some require the door out of service immediately (missing latch, unrated hardware on a rated opening). Others have weeks. The penalty for skip… Read more
Posted by National Lock Supply on May 18th 2026
A door hardware schedule lives in Division 08 of the project specification and lists every opening in the building by number, with a hardware set (HW-1, HW-2, HW-3…) that points to a parts list. Each hardware set names brand, model, function code, and finish for every piece on that opening. The estimator's job is to take each HW set, multiply by the door count assigned to it, and translate into a purchasable line item. The most common mist… Read more
![Data Center Door Hardware Spec [Guide]](https://cdn11.bigcommerce.com/s-iqhkw55zf5/images/stencil/1030x680/uploaded_images/05-data-center-door-hardware.png?t=1779275751 "Data Center Door Hardware Spec [Guide]")
Posted by National Lock Supply on May 15th 2026
A data center spec divides openings into four security zones, and each zone has its own hardware playbook. The perimeter zone uses high-cycle maglocks or electric strikes with anti-passback card readers. The vestibule and mantrap zone uses interlocked doors with optical tailgating detection. The white-space zone uses dual-credential biometric readers tied to electric strikes on rated doors. The cage and cabinet zone uses rack-level locks with aud… Read more
Posted by National Lock Supply on May 13th 2026
Cannabis dispensaries operate under a hardware spec that does not look like a typical retail store. Most states require a vault or limited-access area with reinforced doors, perimeter doors with motion-detected alarms and reinforced strikes, a dedicated ID verification area where customers cross from the public space into the sales floor, and video coverage tied to every access event. The hardware that meets the requirements is mostly commercial-… Read more
Posted by National Lock Supply on May 11th 2026
ANSI/BHMA A156 is the family of performance standards that defines how commercial door hardware is tested, graded, and labeled. There are 40+ individual standards in the series. Each covers one hardware category (hinges, locks, exit devices, closers, electric strikes, etc.) and defines cycle counts, force tests, and grade thresholds. A spec book references the standard number and grade ("ANSI/BHMA A156.13 Grade 1") to lock in a quality floor. Thi… Read more
![Self-Storage Facility Hardware [Complete Guide]](https://cdn11.bigcommerce.com/s-iqhkw55zf5/images/stencil/1030x680/uploaded_images/08-self-storage-facility-hardware.png?t=1779275792 "Self-Storage Facility Hardware [Complete Guide]")
Posted by National Lock Supply on May 8th 2026
A self-storage facility has four distinct opening types and four corresponding hardware spec sheets. The perimeter and office openings use standard commercial hardware. The gate operator is a separate procurement (gate hardware, intercom, RFID reader). The unit doors are the highest-volume hardware line on the facility and the one with the most operational impact: disc-detainer padlocks for outdoor units, cylinder-and-hasp for indoor units, overl… Read more
Posted by National Lock Supply on May 6th 2026
Commercial door hardware varies 8x across building types: $150-1,200 per opening fully loaded. The cost is driven by four variables: function (passage vs entry vs panic), fire rating (rated vs non-rated), electrification (mechanical vs electrified), and finish grade. A typical office building runs $250-450 per opening on most interior doors with $600-1,200 spikes on perimeter and electrified entries. Healthcare and high-security buildings run $40… Read more
Posted by National Lock Supply on May 4th 2026
A typical electrified commercial opening carries five devices that have to coexist: a door closer, an exit device, an electric strike (or a maglock), a request-to-exit signal, and a regulated power supply. The order they get specified matters. Closer sizing dictates door speed and force, exit device type fixes the strike geometry, the strike fixes the amperage draw, the REX fixes the bypass logic, and the power supply has to absorb the whole stac… Read more
![Repair vs Replace Commercial Door Hardware [Guide]](https://cdn11.bigcommerce.com/s-iqhkw55zf5/images/stencil/1030x680/uploaded_images/10-repair-vs-replace-failure-modes.png?t=1779275819 "Repair vs Replace Commercial Door Hardware [Guide]")
Posted by National Lock Supply on May 1st 2026
The repair vs replace decision for commercial door hardware follows three rules. Replace when the failure is structural (cracked housing, broken spring, worn bearing). Repair when the failure is service-level (dirty mechanism, loose fastener, misaligned strike). Replace when the unit is past 60% of its design cycle life and the failure is the second one this year. Below are the 12 failure modes facility teams see most, the root cause, the field d… Read more