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Spring Hinges
Spring hinges provide self-closing functionality for commercial doors without requiring separate door closers. These spring-loaded hinges automatically close doors for offices, retail, and multifamily applications. National Lock Supply stocks spring hinges in single-action and double-action models with adjustable tension, fire ratings, and architectural finishes for doors requiring automatic closing without overhead closers.
Frequently Asked Questions
When should I use spring hinges instead of door closers?
Spring hinges work well for lightweight doors, applications where overhead closers aren't desired aesthetically, and doors requiring automatic closing without closer visibility.
How many spring hinges are needed per door?
Typically 1-2 spring hinges per door depending on door weight and closing requirements. National Lock Supply can help determine appropriate quantity for your application.
Are spring hinges adjustable?
Yes, most spring hinges feature adjustable spring tension allowing field adjustment of closing force and speed to meet door requirements.
Can spring hinges be used on fire doors?
Yes, when properly rated and in sufficient quantity. National Lock Supply stocks fire-rated spring hinges tested for fire door assemblies meeting life safety codes.
What is the difference between single and double-action spring hinges?
Single-action hinges allow doors to swing one direction only, while double-action hinges allow swinging both directions with automatic return to center.
Do spring hinges meet ADA requirements?
Spring hinges can meet ADA when properly adjusted for appropriate closing force. National Lock Supply can advise on ADA-compliant spring hinge configurations.