Crosby S-279 UNC Shoulder Type Machinery Eye Bolts - 7/8 x 2-1/4

Product Description

Product Description:
Crosby S-279 UNC Shoulder Type Machinery Eye Bolts are designed for secure lifting points in machinery, equipment, and structural applications, providing a reliable connection for hoisting, positioning, and rigging operations.
These eye bolts feature a forged shoulder design, allowing for in-line (vertical) loading and limited angular loading when properly seated, making them suitable for a wide range of lifting configurations.
The S-279 series uses UNC (Unified National Coarse) threads, making it ideal for imperial-based systems and North American applications.

Material:
Body: Forged steel
Heat treatment: Quenched and tempered for strength and durability

Specifications:
Designed for machinery lifting and rigging applications
UNC threaded (imperial sizes) for North American compatibility
Working Load Limits shown are for in-line (vertical) pull only
Suitable for angular loading when shoulder is properly seated (with capacity reduction)
5:1 design factor (ultimate strength = 5× WLL)
Proof tested to 2× Working Load Limit
Fatigue rated at 1.5× Working Load Limit for 20,000 cycles
Meets or exceeds ASME B30.26 requirements including:
Identification
Ductility
Proof load
Temperature performance
Available in a wide range of thread diameters and shank lengths

Uses:
Machinery lifting and positioning
Equipment installation and maintenance
Structural lifting points
Industrial rigging and fabrication

Key Features:
UNC thread design – Compatible with imperial systems
Shoulder construction – Allows for angular loading when properly installed
High strength steel – Forged and heat-treated for durability
Fatigue rated – Designed for repeated lifting cycles
Proof tested – Certified for lifting applications
Versatile installation – Suitable for tapped holes or through-bolting