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Crosby M30 x 45 M-279 Shoulder Eye Bolt - 6000 kg WLL - #1046075 Clearance
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Crosby M30 x 45 M-279 Shoulder Eye Bolt – 6000 kg WLL – #1046075 Clearance

Original price was: $192.80.Current price is: $77.12.

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SKU: SK0002789 Category: Tag:
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Product Description

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 20,000 cycles, and meets or exceeds ASME B30.26 requirements for material traceability, proof load, ductility, and design factor.

Key Features

  • Forged steel construction – quenched and tempered for strength and durability
  • Designed and rated for in-line loading only
  • Fatigue rated to 1.5× WLL at 20,000 cycles
  • 5:1 design factor; maximum proof load = 2× WLL
  • Meets ASME B30.26 identification, ductility, and temperature requirements
  • Available in UNC (S-279) or Metric (M-279) thread sizes

Pro Tip: Crosby Machinery Eye Bolts are supplied without nuts. These bolts are primarily designed for installation into tapped holes on machinery or equipment. When used through-bolted, nuts and washers must be added so the shoulder seats flush against the load surface. Always follow Crosby’s installation diagrams and ensure the shoulder is tight before lifting.

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.

  • Do not undercut the shoulder to seat flush; instead, countersink or use washers with proper inner diameter.
  • Thread the eye bolt fully and tighten securely against the load surface.
  • Inspect before use—never use if bent, elongated, or damaged.
  • For aluminum or dissimilar metals, avoid leaving the bolt installed long-term to prevent galvanic corrosion.

Typical Applications

  • Machinery lifting, rigging, and positioning
  • OEM equipment mounting points
  • Industrial fabrication and maintenance lifts

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.

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Specifications

MPN—–1046075
Model—–M-279
Size—–M30
Type—–Machinery
Material—–Forged Steel
Finish—–Self-Colored
WLL (kg)—–6000
Safety Factor—–5:1
Overhead Lifting Rated—–Yes
Overall Length—–171 mm
Overall Width—–114 mm
Inside Eye—–63.5 mm
Thread Type—–Metric
Thread—–45.0 mm
Approx. Weight (kg)—–1.77
Country of Origin—–USA

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