Manufacturer Documents
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.
| WLL 4:1 (lb)(t) | WLL 5:1(lb)(t) SlingCenter derate | Weight (lb)(kg) | Chain dia (in)(mm) | a (in)(mm) | b (in)(mm) | c (in)(mm) | d (in)(mm) | e (in)(mm) | f (in)(mm) | g (in)(mm) | Stock # |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2,4691.12 | 1,9840.9 | 0.560.25 | 7/326 | 2 1/1652 | 29/3223 | 2 15/1675 | 1 21/3242 | 9/327 | 5/168 | 9/327 | GPGCV6 |
| 4,4092 | 3,5271.6 | 0.990.45 | 5/168 | 2 5/867 | 1 3/1630 | 3 11/1694 | 1 31/3250 | 11/329 | 11/329 | 5/168 | GPGCV8 |
| 7,0543.2 | 5,6432.56 | 1.910.87 | 3/810 | 3 9/3283 | 1 1/238 | 4 9/16116 | 2 15/3263 | 7/1611 | 1/213 | 15/3212 | GPGCV10 |
| 11,9045.4 | 9,5234.32 | 3.851.74 | 1/213 | 4 3/32104 | 1 15/1649 | 5 7/8149 | 3 1/879 | 9/1614 | 5/816 | 5/816 | GPGCV13 |
| 18,0778.2 | 14,4626.56 | 6.843.10 | 5/816 | 5127 | 2 3/860 | 7 1/4184 | 3 29/3299 | 23/3218 | 25/3220 | 25/3220 | GPGCV16 |
| 28,21912.8 | 22,57510.24 | 12.65.72 | 3/420 | 6 1/16154 | 2 15/1675 | 8 15/32215 | 4 7/8124 | 7/822 | 15/1624 | 25/3220 | GPGCV20 |
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. Pound figures are converted by SlingCenter from the manufacturer’s metric rating at 1 t = 2,204.62 lb and rounded down — a unit conversion only, not a change of rating. The metric figure is the rating of record. Lowercase t is the metric tonne (1,000 kg / 2,204.62 lb), the manufacturer’s own notation — not the US short ton.
The Green Pin GCV Shortening Clutch with Locking Grade 8 adds a positive locking mechanism to the standard shortening clutch, preventing the chain from releasing during lifting. The lock must be manually released, providing an extra layer of security for critical applications.
Key Features
- Positive locking prevents accidental chain release
- Manual unlock required for release
- Grade 8 alloy steel
- EN 1677-1 compliant
- Individually proof tested with certificate
Common Applications
- Critical chain sling shortening requiring positive lock
- Applications where vibration could release unlocked clutches
- Grade 8 chain sling fabrication
- Safety-critical overhead lifting
Why Green Pin?
The locking mechanism adds an extra safety layer beyond standard shortening clutches. Individually proof tested by Van Beest.
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 — 6 variants
Search below or click column headers to sort. Add any quantity per row to your cart.
| Option ▴▾ | SKU ▴▾ | Price ▴▾ | Stock | Qty | Add |
|---|---|---|---|---|---|
| 6 mm (1/4") | GPGCV6 | $176.00 | ✓ In Stock | ||
| 8 mm (5/16") | GPGCV8 | $196.50 | ✓ In Stock | ||
| 10 mm (3/8") | GPGCV10 | $211.50 | ✓ In Stock | ||
| 13 mm (1/2") | GPGCV13 | $430.50 | ✓ In Stock | ||
| 16 mm (5/8") | GPGCV16 | $281.62 | ✓ In Stock | ||
| 20 mm (3/4") | GPGCV20 | $868.00 | ✓ 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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