The Crosby S-253 is a screw-pin Sling Saver shackle designed for use with both synthetic web slings and round slings, offering quick connect/disconnect via the screw pin. The increased radius of the bow provides a wider sling bearing surface for better load distribution across internal fibers, allowing 100% of the sling's rated Working Load Limit to be achieved. The larger-diameter bolt (pin) further improves load distribution.
Key Features
- Screw-pin Sling Saver shackle for quick connection changes
- Suitable for synthetic web slings and round slings
- All-alloy construction; wide bow for improved load distribution
- Working Load Limit: 3.25 t up to 50 t (7 sizes, Stock No. 1020575 through 1020629)
- Larger-diameter pin for better load distribution
- Product Identification Code (PIC) for material traceability; Red Pin mark of genuine Crosby
- Meets or exceeds ASME B30.26 and WSTDA-RS1; 5:1 design factor; proof load 2.5x WLL
Common Applications
- Synthetic web and round sling terminations
- Bridle and general rigging connections requiring quick sling changes
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 (t)(t) | Design Factor | Weight (lb)(kg) | A (in)(mm) | B (in)(mm) | C (in)(mm) | D (in)(mm) | E (in)(mm) | G (in)(mm) | K (in)(mm) | L (in)(mm) | M (in)(mm) | N (in)(mm) | P (in)(mm) | R (in)(mm) | Stock # |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 3.25 | 5:1 | 1.40.64 | 0.8822.4 | 0.6215.7 | 1.3835.1 | 0.7519.0 | 1.538.1 | 3.3885.9 | 1.538.1 | 0.7519.0 | 2.6968.3 | 3.2281.8 | 0.4411.2 | 1.025.4 | 1020575 |
| 1-1/2 | 6.5 | 5:1 | 2.21.0 | 1.2531.8 | 0.7519.0 | 1.7544.4 | 0.8822.4 | 1.8847.8 | 4.15105.4 | 1.8146.0 | 1.025.4 | 3.3885.9 | 4.03102.4 | 0.512.7 | 1.1930.2 | 1020584 |
| 2 | 8.75 | 5:1 | 3.81.72 | 1.3835.1 | 0.8822.4 | 2.2557.1 | 1.025.4 | 2.8171.4 | 5.5139.7 | 2.0953.1 | 1.1228.4 | 4.19106.4 | 4.5114.3 | 0.512.7 | 1.4436.6 | 1020593 |
| 3 | 12.5 | 5:1 | 7.33.31 | 1.6241.1 | 1.1228.4 | 3.2582.5 | 1.2531.8 | 3.0677.7 | 6.34161.0 | 2.6266.5 | 1.3835.1 | 5.62142.7 | 5.59142.0 | 0.6215.7 | 1.8146.0 | 1020602 |
| 4 | 20.5 | 5:1 | 15.26.89 | 2.1253.8 | 1.3835.1 | 4.5114.3 | 1.538.1 | 5.25133.3 | 9.45240.0 | 3.1279.2 | 1.7544.4 | 7.5190.5 | 6.88174.8 | 0.7519.0 | 2.1354.1 | 1020611 |
| 5 | 35 | 5:1 | 30.813.97 | 2.563.5 | 1.7544.4 | 5.5139.7 | 2.050.8 | 6.34161.0 | 11.5292.1 | 4.19106.4 | 2.2557.1 | 9.19233.4 | 8.66220.0 | 1.025.4 | 2.8873.2 | 1020620 |
| 6 | 50 | 5:1 | 52.023.59 | 3.076.2 | 2.1253.8 | 6.5165.1 | 2.2557.1 | 7.7195.6 | 13.75349.2 | 4.75120.6 | 2.7569.8 | 11.0279.4 | 10.22259.6 | 1.2231.0 | 3.1981.0 | 1020629 |
Dimensions and ratings sourced directly from manufacturer catalog pages. SlingCenter does not derive or restate ratings.
Order Sheet — 7 variants
Search below or click column headers to sort. Add any quantity per row to your cart.
| Option ▴▾ | SKU ▴▾ | Price ▴▾ | Stock | Qty | Add |
|---|---|---|---|---|---|
| 1 (WLL 3.25) | 1020575 | $62.70 | ✓ In Stock | ||
| 1-1/2 (WLL 6.5) | 1020584 | $67.80 | ✓ In Stock | ||
| 2 (WLL 8.75) | 1020593 | $89.50 | ✓ In Stock | ||
| 3 (WLL 12.5) | 1020602 | $194.40 | ✓ In Stock | ||
| 4 (WLL 20.5) | 1020611 | $398.00 | ✓ In Stock | ||
| 5 (WLL 35) | 1020620 | $651.00 | ✓ In Stock | ||
| 6 (WLL 50) | 1020629 | $1,500.00 | ✓ 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.
Why SlingCenter
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Estimate shipping
Enter your zip to see delivery estimates at checkout.
Go to Cart to Estimate