The Crosby A-1337 Lok-A-Loy connecting link is a forged alloy steel link designed for permanently connecting chain fittings in Grade 80 chain sling assemblies. The Lok-A-Loy design features a mechanical locking mechanism that secures without welding, allowing field assembly and reconfiguration of chain sling systems.
Key Features
- Lok-A-Loy mechanical locking — no welding required
- Forged alloy steel for Grade 80 chain systems
- Field-assemblable for flexible sling configuration
- Proof tested at 2x WLL
- 5:1 design factor per ASME B30.26
Common Applications
- Grade 80 chain sling assembly and repair
- Connecting chain to hooks, links, and fittings
- Field replacement of damaged chain components
- Industrial overhead lifting systems
Standards & Compliance
Meets ASME B30.26 and ASME B30.9 for chain sling components. 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
Request datasheet
| Size (in)(mm) | WLL (lb)(lb) | Design Factor | Weight (lb)(kg) | A (in)(mm) | B (in)(mm) | C (in)(mm) | D (in)(mm) | E (in)(mm) | F (in)(mm) | Stock # |
|---|---|---|---|---|---|---|---|---|---|---|
| 9/32 (1/4)7 | 4300 | 4:1 | 0.290.13 | 0.389.7 | 1.9449.3 | 2.050.8 | 0.820.3 | 0.6817.3 | 0.5313.5 | 1015104 |
| 5/168 | 5700 | 4:1 | 0.420.19 | 0.379.4 | 2.3659.9 | 2.1354.1 | 0.9925.1 | 0.7218.3 | 0.5915.0 | 1015113 |
| 3/810 | 8800 | 4:1 | 0.770.35 | 0.5113.0 | 2.6567.3 | 2.5564.8 | 1.0927.7 | 0.9123.1 | 0.7318.5 | 1015122 |
| 1/213 | 15000 | 4:1 | 1.60.73 | 0.6817.3 | 3.4687.9 | 3.3986.1 | 1.4536.8 | 1.1328.7 | 0.8922.6 | 1015136 |
| 5/816 | 22600 | 4:1 | 3.11.41 | 0.7819.8 | 4.25108.0 | 4.0101.6 | 1.7745.0 | 1.3434.0 | 1.230.5 | 1015145 |
| 3/420 | 35300 | 4:1 | 6.392.9 | 1.0125.7 | 5.14130.6 | 5.3134.6 | 2.1554.6 | 1.6441.7 | 1.5639.6 | 1015154 |
| 7/822 | 42700 | 4:1 | 7.853.56 | 1.0927.7 | 5.46138.7 | 5.78146.8 | 2.2757.7 | 1.9750.0 | 1.5539.4 | 1015163 |
| 126 | 59700 | 4:1 | 11.055.01 | 1.2431.5 | 5.94150.9 | 6.5165.1 | 2.4161.2 | 2.2156.1 | 1.8847.8 | 1015172 |
| 1-1/432 | 90400 | 4:1 | 21.09.53 | 1.5639.6 | 7.43188.7 | 7.6193.0 | 3.0778.0 | 2.5765.3 | 2.2256.4 | 1015181 |
Dimensions and ratings sourced directly from manufacturer catalog pages. SlingCenter does not derive or restate ratings.
Order Sheet — 9 variants
Search below or click column headers to sort. Add any quantity per row to your cart.
| Option ▴▾ | SKU ▴▾ | Price ▴▾ | Stock | Qty | Add |
|---|---|---|---|---|---|
| 9/32 (1/4) (WLL 4,300 lb) | 1015104 | $54.30 | ✓ In Stock | ||
| 5/16 (WLL 5,700 lb) | 1015113 | $59.50 | ✓ In Stock | ||
| 3/8 (WLL 8,800 lb) | 1015122 | $64.60 | ✓ In Stock | ||
| 1/2 (WLL 15,000 lb) | 1015136 | $101.40 | ✓ In Stock | ||
| 5/8 (WLL 22,600 lb) | 1015145 | $129.60 | ✓ In Stock | ||
| 3/4 (WLL 35,300 lb) | 1015154 | $187.10 | ✓ In Stock | ||
| 7/8 (WLL 42,700 lb) | 1015163 | $283.00 | ✓ In Stock | ||
| 1 (WLL 59,700 lb) | 1015172 | $590.00 | ✓ In Stock | ||
| 1-1/4 (WLL 90,400 lb) | 1015181 | $842.00 | ✓ 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