Ives 3SP1 Steel Spring Full Mortise Hinge with 3 Knuckles for Self-Closing Doors

Ives 3SP1 Steel Spring Full Mortise Hinge with 3 Knuckles for Self-Closing Doors

Professional Self-Closing Door Hardware Solution

The Ives 3SP1 Steel Spring Full Mortise Hinge provides reliable self-closing functionality for doors up to 120 lbs and 36" width. This 3-knuckle spring hinge features steel construction with square corners and includes all necessary fasteners for hollow metal and half metal/half wood applications. Certified to exceed ANSI/BHMA A156.1 performance standards and meets ANSI/BHMA 156.7 template dimensions for professional installations.

Professional Features & Benefits

• Door Capacity: Maximum door weight 120 lbs with maximum door width 36" for versatile commercial applications.
• Fire-Rated Compatibility: Maximum labeled door size 3'0" wide x 7'0" x 1-3/4" thick as set in NFPA #80 standards.
• Complete Installation Package: Packed with fasteners for hollow metal and half metal/half wood applications including 12-24 x 1/2 UFPHMS and 12 x 1-1/4 FPHWS screws.
• Adjustable Spring Tension: Includes pin for setting spring tension and adjusting wrench for precise self-closing adjustment.
• Heavy-Duty Steel Construction: 1040 Steel substrate provides exceptional durability for medium-duty commercial applications.
• ANSI/BHMA Certified: Exceeds ANSI/BHMA A156.1 performance standards and meets ANSI/BHMA 156.7 template hinge dimensions.
• UL Classified: UL Classified for windstorm rated assemblies (R37965) ensuring code compliance.
• Customization Options: Available with rounded corners (RC-1/4, RC-5/8) and security fasteners (SEC - pin-in-socket) for enhanced applications.

Technical Specifications

• ANSI/BHMA: ANSI/BHMA A156.1
• Commercial/Residential: Commercial
• Corner Style: Square Corners
• Department: Door Hardware
• Duty Level: Medium Duty
• Fasteners: Wood and Machine Screws
• Knuckles: 3
• Product Category: Door Hinges and Pivots
• Product Function: Spring Hinges
• Product Group: Door Hinges and Pivots
• Product Model: 3SP1
• Product Subgroup: Full Mortise Hinges
• Product Substrate: Steel
• Product Type: Hinges
• Subcategory: Hinges and Pivots

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, weight capacity (120 lbs maximum), and door width (36" maximum) compatibility.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper mortise preparation.
3. Prepare door and frame by cutting mortises and drilling required holes per manufacturer specifications for full mortise installation.
4. Install hinge using provided fasteners (12-24 x 1/2 UFPHMS for hollow metal, 12 x 1-1/4 FPHWS for wood applications) per manufacturer torque specifications.
5. Adjust spring tension using the provided pin and adjusting wrench for proper self-closing operation throughout the full range of door movement.
6. Test door operation to verify proper self-closing function and make final spring tension adjustments as needed. 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 Ives Quality?

Ives spring hinges deliver professional-grade reliability with steel construction certified to exceed ANSI/BHMA A156.1 performance standards and UL classification for windstorm rated assemblies. Complete with all necessary installation hardware and adjustment tools for immediate professional installation. Engineered for demanding commercial applications where dependable self-closing performance and code compliance are essential.