Hager 1252 Full Mortise Spring Hinge with 5/8" Round Corners - Standard Weight Steel Construction

Hager 1252 Full Mortise Spring Hinge with 5/8" Round Corners - Standard Weight Steel Construction

Professional Self-Closing Door Hardware Solution

The Hager 1252 Full Mortise Spring Hinge delivers reliable self-closing performance with standard weight steel construction and 5/8" round corner radius design. This 3-knuckle spring hinge meets ANSI K81071F certification standards and accommodates doors up to 7'0" height with proper installation. Available in multiple finish options including USP, US3, US4, US10, US10A, US10B, and US26D to match various architectural requirements.

Professional Features & Benefits

• 5/8" Round Corner Radius: Provides smooth, professional appearance with reduced stress concentration for enhanced durability in commercial applications.
• Standard Weight Construction: Steel with steel components engineered for medium-duty commercial use with reliable spring tension performance.
• 3-Knuckle Design: Balanced load distribution and smooth operation throughout the door swing cycle for consistent self-closing action.
• ANSI K81071F Certification: Meets stringent industry standards for spring hinge performance and reliability in commercial installations.
• Full Mortise Installation: Both leaves mortise into door and frame for clean, professional appearance and maximum structural integrity.
• Multiple Finish Options: Available in USP, US3, US4, US10, US10A, US10B, and US26D finishes to coordinate with existing hardware and architectural specifications.
• Versatile Fastener Compatibility: Accommodates both machine screws (12-24 x 1/2") and wood screws (12 x 1-1/4") for various frame materials and installation requirements.
• Optional Configurations: Available with hospital tip (HT) or raised barrel (RBB/RBS) options to meet specific application needs and UL requirements where applicable.

Technical Specifications

• ANSI/BHMA: ANSI K81071F
• Certifications: ANSI K81071F;
• Commercial/Residential: Commercial
• Duty Level: Medium Duty
• Fastener Size - Machine: 12-24 x 1/2";
• Fastener Size - Wood: 12 x 1-1/4";
• Features: Full Mortise, Spring Hinge, 5/8" Round Corner Radius, Standard Weight
• Finishes: USP, US3, US4, US10, US10A, US10B, US26D;
• Knuckles: 3;
• Material: Steel with Steel Components;
• Notes: Hager does not recommend using spring hinges on doors over 7'0".;
• Options: Available with hospital tip (HT) - voids UL.
• Subcategory: Full Mortise Hinges

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, frame material compatibility, and maximum door height of 7'0" for this spring hinge model.
2. Use manufacturer-provided templates to mark mortise locations accurately on both door edge and frame, ensuring proper alignment for 5/8" round corner radius.
3. Prepare door and frame by routing mortise pockets to specified depth and drilling pilot holes for fasteners per manufacturer instructions.
4. Install hinge leaves using appropriate fasteners: 12-24 x 1/2" machine screws for metal frames or 12 x 1-1/4" wood screws for wood frames, following manufacturer torque specifications.
5. Adjust spring tension as needed, noting that full spring tension may not be required on all hinges when using multiple spring hinges or combination with ball bearing hinges.
6. Test door operation to verify proper self-closing function and make final adjustments considering wind conditions, carpeting drag, or weatherstripping that may require additional spring hinges. Refer to manufacturer documentation for complete installation details and troubleshooting.

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 spring hinges deliver professional-grade reliability with steel construction and ANSI K81071F certification for demanding commercial applications. Manufactured in accordance with ANSI/BHMA A156.1 standards, these hinges provide consistent self-closing performance with multiple finish options to meet architectural specifications. Engineered for medium-duty commercial use where dependable door control and professional appearance are essential.