Hager 1255 Full Mortise Spring Hinge Set - Standard Weight Steel Construction

Hager 1255 Full Mortise Spring Hinge Set - Standard Weight Steel Construction

Professional Spring Hinge Solution for Commercial Door Applications

The Hager 1250 Full Mortise Spring Hinge delivers reliable automatic door closing functionality with standard weight steel construction and 3-knuckle design. ANSI K81071F certified for commercial applications, this spring hinge features steel with steel components for durability and is available in multiple finish options including USP, US3, US4, US10, US10A, US10B, and US26D. UL approved for doors up to 4'0" x 8'0" with specific installation requirements for optimal performance.

Professional Features & Benefits

• Door Size Compatibility: UL approved for doors up to 4'0" x 8'0" with manufacturer recommendation for doors up to 7'0" height for optimal performance.
• Heavy-Duty Steel Construction: Steel with steel components provides exceptional durability and long-term reliability in commercial applications.
• ANSI Certification: ANSI K81071F certified ensuring compliance with industry standards for commercial door hardware.
• Multiple Finish Options: Available in USP, US3, US4, US10, US10A, US10B, and US26D finishes to match various architectural requirements.
• 3-Knuckle Design: Standard 3-knuckle configuration provides reliable operation and proper load distribution.
• Flexible Installation Options: Compatible with all spring hinges or combination of spring hinges and ball bearing hinges for maximum versatility.
• Optional Configurations: Available with hospital tip (HT) or raised barrel (RBB/RBS) options for specialized applications.
• Load-Specific Requirements: Engineered for doors over 3'0" x 7'0" or over 100 lbs requiring three spring hinges, with four hinges for 150-180 lb doors.

Technical Specifications

• ANSI/BHMA: ANSIK81071F
• Certifications: ANSI K81071F
• Commercial/Residential: Commercial
• Duty Level: Medium Duty
• Features: Full Mortise, Spring Hinge, Standard Weight, Square Corner
• Finishes: USP, US3, US4, US10, US10A, US10B, US26D
• Knuckles: 3
• Material: Steel with Steel Components
• Notes: UL approved for use on doors 4'0" x 8'0", but Hager does not recommend using spring hinges on doors over 7'0" in favor of hydraulic door closers.; For maximum versatility use all spring hinges or a combination of spring hinges and ball bearing or anti-friction hinges. Do not use plain bearing hinges. Strong wind conditions, drafts, carpeting drag, twisted/misaligned frames, or weatherstripping on doors may require additional spring hinges. Full spring tension may not be required on all hinges.; Doors over 3'0" x 7'0" or over 100 lbs require three spring hinges. Doors 150-180 Lbs require four spring hinges.
• Subcategory: Full Mortise Hinges

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, weight, and handing for proper spring hinge selection.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces ensuring proper mortise depth.
3. Prepare door and frame by cutting mortises and drilling required holes per manufacturer specifications for full mortise installation.
4. Install spring hinges with appropriate fasteners and secure to door and frame per manufacturer torque specifications.
5. Adjust spring tension for proper door closing operation considering environmental factors such as wind conditions, drafts, carpeting drag, or weatherstripping resistance.
6. Test door operation to verify proper closing function and make final spring tension adjustments as needed. Refer to manufacturer documentation for complete installation details and spring tension guidelines.

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Government and Municipal Buildings

Why Choose Hager Quality?

Hager 1250 spring hinges deliver professional-grade reliability with steel construction and ANSI K81071F certification for demanding commercial applications. UL approved for doors up to 4'0" x 8'0" with engineered load requirements ensuring proper performance across various door weights and sizes. Engineered for commercial environments where dependable automatic door closing is essential.

Support Resources

• Commercial Hinges Catalog 2024 (PDF)
• Standard Hinge Locations Guide (PDF)
• Commercial Hinges Cross Reference (PDF)
• Concealed Electric Hinge Modification (PDF)
• Electric Hinge Installation Instructions (PDF)
• Size Options (PDF)