• Crosby S-279 UNC Shoulder Type Machinery Eye Bolts – 1-1/4 in x 3 in - Eye Bolts - Hercules Lifting
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Crosby

S-279 Metric Shoulder Type Machinery Eye Bolts

S-279 Metric Shoulder Type Machinery Eye Bolts

Part #9900257

$144.45 CAD
$144.45 CAD
Promotion Épuisé
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Description du produit

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

Size (in) Stock No. Working Load Limit (lb) Weight Per 100 (lb) A* Thread Dimension B (in) Dimension C (in) Dimension D (in) Dimension E (in) Dimension F (in) Dimension G (in) Dimension H (in)
3/8 x 1-1/4 9900208 1,550 16.00 3/8 - 16 1.25 1.62 1.00 3.11 0.31 0.69 1.05
1/2 x 1-1/2 9900217 2,600 30.00 1/2 - 13 1.50 1.95 1.19 3.75 0.38 0.91 1.27
5/8 x 1-3/4 9900226 5,200 59.00 5/8 - 11 1.77 2.38 1.38 4.49 0.50 1.13 1.53
3/4 x 2 9900235 7,200 102.00 3/4 - 10 2.03 2.76 1.50 5.12 0.63 1.38 1.71
7/8 x 2-1/4 9900244 10,600 162.00 7/8 - 9 2.29 3.25 1.75 5.93 0.75 1.56 2.01
1 x 2-1/2 9900253 13,300 251.00 1 - 8 2.55 3.76 2.00 6.73 0.88 1.81 2.30
1-1/8 x 2-3/4 9900257 15,000 321.00 1-1/8 - 7 2.75 4.19 2.25 7.20 0.97 2.06 2.35
1-1/4 x 3 9900262 21,000 422.00 1-1/4 - 7 3.05 4.50 2.50 8.03 1.00 2.28 2.73
1-1/2 x 3-1/2 9900271 24,000 759.00 1-1/2 - 6 3.55 5.50 3.00 9.58 1.25 2.75 3.28
1-3/4 x 3-3/4 9900280 34,000 1,040.00 1-3/4 - 5 3.75 6.26 3.50 10.47 1.38 3.00 3.60
2 x 4 9900289 42,000 1,920.00 2 - 4-1/2 4.00 7.62 4.00 12.30 1.81 3.38 4.50
2-1/2 x 5 9900298 65,000 3,250.00 2-1/2 - 4 5.00 8.76 4.50 14.86 2.12 4.25 5.50

Series: S-279 UNC Shoulder Type Machinery Eye Bolts

Design Factor: 5:1. Maximum Proof Load is 2 times the Working Load Limit.

* Thread: All bolts are threaded UNC.

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