The Crosby S-643 weldless ring is a single-piece forged steel ring with no weld joint, providing maximum reliability for overhead lifting. The weldless construction eliminates the potential failure point of a weld, making it ideal for critical lifting applications.
Key Features
- Weldless single-piece forged construction
- No weld failure point
- Forged alloy steel
- Proof tested at 2x WLL
Common Applications
- Critical lift rigging points
- Sling assembly fittings
- Applications requiring weld-free components
Standards & Compliance
Meets ASME B30.26. Made in the USA by Crosby.
Safety & Standards
Every product we carry is individually marked with Working Load Limit (WLL), manufacturer traceability code, and country of origin. Inspection and mill certificates are available on request — email sales@slingcenter.com with your order number.
Governing Standards
- ASME B30.9 — slings (web, round, wire rope, chain) inspection and use
- ASME B30.26 — rigging hardware (shackles, eye bolts, links, turnbuckles)
- ASME B30.10 — hooks
- OSHA 1910.184 and 1926.251 — general industry and construction sling safety
- WSTDA WS-2 and RS-1 — web and round sling design
- 49 CFR 393.102 to 393.130 — DOT cargo tie-down
- NACM — welded steel chain grade specs
Inspection & Safety
Before every use: visual check for cracks, corrosion, distortion, wear, and illegible markings. Annually (minimum): documented periodic inspection by a trained inspector. Remove from service at first sign of damage. Never repair rigging hardware by welding, heating, or bending.
WARNING: Improper use of rigging can cause death or serious injury. Never exceed the rated Working Load Limit. Apply derating for side-loading, elevated temperature, or chemical exposure. Final application decisions must be made by a Qualified Person per OSHA 1926.32(m).
Specifications — Full Dimensions by Size
| Size (in)(mm) | WLL (lb)(lb) | Design Factor | Weight (lb)(kg) | A (in)(mm) | B (in)(mm) | C (in)(mm) | Stock # |
|---|---|---|---|---|---|---|---|
| 7/8 x 422.2 | 7,200 | 6:1 | 2.721.23 | 0.8822.4 | 4.0101.6 | 5.75146.0 | 1013780 |
| 7/8 x 5-1/222.2 | 5,600 | 6:1 | 3.471.57 | 0.8822.4 | 5.5139.7 | 7.25184.1 | 1013806 |
| 1 x 425.4 | 10,800 | 6:1 | 3.691.67 | 1.025.4 | 4.0101.6 | 6.0152.4 | 1013824 |
| 1-1/8 x 628.6 | 10,400 | 6:1 | 6.62.99 | 1.1328.7 | 6.0152.4 | 8.25209.5 | 1013842 |
| 1-1/4 x 531.8 | 17,000 | 6:1 | 6.823.09 | 1.2531.8 | 5.0127.0 | 7.5190.5 | 1013860 |
| 1-3/8 x 634.9 | 19,000 | 6:1 | 10.124.59 | 1.3835.1 | 6.0152.4 | 8.75222.2 | 1013888 |
Dimensions and ratings sourced directly from manufacturer catalog pages. SlingCenter does not derive or restate ratings.
Order Sheet — 6 variants
Search below or click column headers to sort. Add any quantity per row to your cart.
| Option ▴▾ | SKU ▴▾ | Price ▴▾ | Stock | Qty | Add |
|---|---|---|---|---|---|
| 7/8 x 4 (WLL 7,200 lb) | 1013780 | $74.90 | ✓ In Stock | ||
| 7/8 x 5-1/2 (WLL 5,600 lb) | 1013806 | $107.20 | ✓ In Stock | ||
| 1 x 4 (WLL 10,800 lb) | 1013824 | $105.20 | ✓ In Stock | ||
| 1-1/8 x 6 (WLL 10,400 lb) | 1013842 | $171.90 | ✓ In Stock | ||
| 1-1/4 x 5 (WLL 17,000 lb) | 1013860 | $202.00 | ✓ In Stock | ||
| 1-3/8 x 6 (WLL 19,000 lb) | 1013888 | $326.00 | ✓ In Stock |
Bulk order? Email sales@slingcenter.com with your list — we'll build a single quote.
Chat with our AI rigging specialist
Fastest: click the Ask SlingCenter chat widget in the bottom-right of any page. Our AI specialist is available 24/7 and trained on ASME B30.9, B30.26, OSHA rigging standards, and our full catalog. It can help you size a sling, pick the right shackle, explain inspection criteria, and look up your order.
Prefer to email?
Send to: sales@slingcenter.com
Include:
- What you are lifting (shape, material, fragility)
- Load weight (lb)
- Length / reach needed
- Pick points — smooth lugs, sharp edges, or a hook?
- Environment — indoor, outdoor, heat, saltwater, chemicals?
- Quantity and timeline
- Your phone number if you want a callback
Response: AI chat instant. Email within 1 business day. Urgent orders same-day on standard configurations.
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