Crosby S-279 & M-279 Machinery Eye Bolts – Forged Steel, Fatigue-Rated, In-Line Lifting Points The Crosby S-279 (UNC) and M-279 (Metric) Machinery Eye Bolts are precision-forged lifting points designed for machinery and equipment where a secure, in-line lifting connection is required. Each bolt is forged from quenched and tempered alloy steel, fatigue rated to 1.5× its Working Load Limit (WLL) at
$ 156.700
Although Bishop Lifting strives to manufacture and sell the highest quality rigging and safety gear, use of the gear is dangerous if not used correctly by competent trained professionals. Bishop Lifting disclaims any liability resulting from the misuse of its rigging and safety gear. Please take a moment to more thoroughly review our disclaimer.
Bishop Lifting rigging and safety gear is only intended to be used by competent trained professionals. Misuse of the rigging and safety gear can result in serious injury up to and including loss of life. As such, Bishop Lifting disclaims liability for any misuse or incorrect product selection by our customers.
Rigging and safety gear purchased from Bishop Lifting should be used in strict accordance with all industry and OSHA standards. At no time should rigging or safety gear be used beyond its certified load ratings (aka Working Load Limits). Normal wear and tear should be expected with use of rigging and safety gear; therefore, all gear should be thoroughly inspected before each and every use. Worn or unsafe rigging and safety gear should never be used.
The Crosby S-279 (UNC) and M-279 (Metric) Machinery Eye Bolts are precision-forged lifting points designed for machinery and equipment where a secure, in-line lifting connection is required. Each bolt is forged from quenched and tempered alloy steel, fatigue rated to 1.5× its Working Load Limit (WLL) at 20,000 cycles, and meets or exceeds ASME B30.26 requirements for material traceability, proof load, ductility, and design factor.
Key Features
Specifications
| Model | Thread Type & Size Range | Working Load Limit (WLL) | Angular Loading Reduction |
|---|---|---|---|
| S-279 | UNC thread, 3/8″ to 2-1/2″ | 1,550 – 65,000 lbs | 15° = 80% WLL 30° = 65% WLL 45° = 30% WLL 90° = 25% WLL |
| M-279 | Metric thread, M6 to M64 | 200 – 29,500 kg |
Note: Rated capacities apply to in-line loading only. For angular lifts, apply the reduction factors shown. All Crosby eye bolts are based on a 5:1 design factor and proof-tested to 2× WLL.
Typical Applications
Important: Always ensure the load is applied in the plane of the eye. Angular lifts require reduced capacity and proper shimming for alignment. Refer to Crosby’s official application and warning information for complete installation guidance.
| MPN | 1046038 |
|---|---|
| Model | M-279 |
| Size | M27 |
| Product Type | Machinery |
| Material | Forged Steel |
| Finish | Self-Colored |
| WLL (kg) | 5000 |
| Safety Factor | 5:1 |
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