Manufacturer Documents
- 📄 Spec sheet (PDF)
- 📄 Catalog pages — imperial (PDF)
- 📄 Catalog pages — metric (PDF)
- ⚠ Applications & warnings (PDF)
- ↗ Manufacturer product page
Documents are hosted by the manufacturer and open in a new tab. Test and mill certificates for your specific order are available on request — email sales@slingcenter.com with your order number.
Specifications — Full Dimensions by Size
This is below the 5:1 commonly specified for wire rope and synthetic sling systems (4:1 is standard for alloy chain components under ASME B30.9). Where a 5:1 column is shown it is SlingCenter’s derate — the manufacturer’s figure remains the rating of record.
| Size | WLL 4:1 (lb) | WLL 5:1(lb) SlingCenter derate | Weight (lb)(kg) | D (in)(mm) | G (in)(mm) | J (in)(mm) | L (in)(mm) | M (in)(mm) | R (in)(mm) | AA (in)(mm) | Stock # |
|---|---|---|---|---|---|---|---|---|---|---|---|
| — (6 mm) | 3,200 | 2560 | 0.640.29 | 2.8672.6 | 0.7318.5 | 0.9323.6 | 4.21107 | 0.6316.0 | 2.9574.9 | 1.5038.1 | 1049103 |
| 1/4 (7 mm) | 4,300 | 3440 | 1.580.72 | 3.8698.0 | 1.0426.4 | 1.1930.2 | 5.67144 | 0.7519.1 | 3.97101 | 2.0050.8 | 1049112 |
| 5/16 (8 mm) | 5,700 | 4560 | 1.570.71 | 3.8698.0 | 1.0426.4 | 1.1930.2 | 5.67144 | 0.7519.1 | 3.95100 | 2.0050.8 | 1049121 |
| 3/8 (10 mm) | 8,800 | 7040 | 2.581.17 | 4.38111 | 1.1930.2 | 1.5338.9 | 6.75171 | 1.0025.4 | 4.71120 | 2.5063.5 | 1049130 |
| 1/2 (13 mm) | 15,000 | 12000 | 5.282.39 | 5.60142 | 1.4436.6 | 1.7845.2 | 8.38213 | 1.1729.7 | 5.89150 | 3.0076.2 | 1049149 |
| 5/8 (16 mm) | 22,600 | 18080 | 9.814.45 | 6.76172 | 1.8948.0 | 2.4161.2 | 10.21259 | 1.4436.6 | 6.97177 | 4.00102 | 1049158 |
| 3/4 (18-20 mm) | 35,300 | 28240 | 18.38.30 | 8.31211 | 2.8371.9 | 2.6968.3 | 13.07332 | 1.9750.0 | 8.00203 | 4.50114 | 1049167 |
| 7/8* (22-23* mm) | 44,100 | 35280 | 24.611.2 | 9.17233 | 3.0778.0 | 3.0577.5 | 13.98355 | 1.9750.0 | 8.76223 | 5.00127 | 1049176 |
The 4:1 column is the manufacturer’s published Working Load Limit and is the rating of record — the figure marked on the product. The 5:1 column is calculated by SlingCenter as WLL × 4 ÷ 5, for comparison against components rated at the 5:1 commonly specified for wire rope and synthetic sling systems. It is always the lower of the two. We never restate a Working Load Limit upward. Size is the manufacturer’s nominal trade size and does not change between unit views — this part is ordered and stamped by that size in every market; the millimetre figure beside it is the equivalent, not a different size.
The Crosby L-1339 clevis hook with latch is an alloy steel bottom hook designed for chain sling assemblies. The clevis connection provides rigid attachment while the spring-loaded latch ensures load security.
Key Features
- Clevis connection for rigid, positive attachment
- Spring-loaded safety latch
- Forged alloy steel
- QUIC-CHECK® deformation indicators
Common Applications
- Chain sling bottom hook applications
- Overhead lifting
- Industrial rigging
Standards & Compliance
Meets ASME B30.10. 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).
Order Sheet — 8 variants
Search below or click column headers to sort. Add any quantity per row to your cart.
| Option ▴▾ | SKU ▴▾ | Price ▴▾ | Stock | Qty | Add |
|---|---|---|---|---|---|
| — (WLL 3,200 lb) | 1049103 | $60.30 | ✓ In Stock | ||
| 1/4 (WLL 4,300 lb) | 1049112 | $87.90 | ✓ In Stock | ||
| 5/16 (WLL 5,700 lb) | 1049121 | $89.20 | ✓ In Stock | ||
| 3/8 (WLL 8,800 lb) | 1049130 | $120.20 | ✓ In Stock | ||
| 1/2 (WLL 15,000 lb) | 1049149 | $188.90 | ✓ In Stock | ||
| 5/8 (WLL 22,600 lb) | 1049158 | $265.00 | ✓ In Stock | ||
| 3/4 (WLL 35,300 lb) | 1049167 | $1,129.00 | ✓ In Stock | ||
| 7/8 (WLL 44,100 lb) | 1049176 | $1,633.00 | Quote |
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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