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
| Size | WLL (lb)(t) | Weight (lb)(kg) | a | b (in)(mm) | c (in)(mm) | d (in)(mm) | e (in)(mm) | f (in)(mm) | g (in)(mm) | Stock # |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/4" | 4400.2 | 0.110.05 | 1/4" | 25/3220 | 1 11/3234 | 25/3220 | 25/3220 | 21/3217 | 9/327 | GPAL06UNC |
| 3/8" | 1,5430.7 | 0.170.08 | 3/8" | 25/3220 | 1 1/238 | 7/822 | 1 3/1630 | 3/419 | 5/168 | GPAL10UNC |
| 1/2" | 2,2041 | 0.310.14 | 1/2" | 31/3225 | 1 27/3247 | 1 1/3227 | 1 13/3236 | 29/3223 | 13/3210 | GPAL12UNC |
| 5/8" | 3,3061.5 | 0.830.38 | 5/8" | 1 13/3236 | 2 9/1663 | 1 3/835 | 2 3/3253 | 1 3/1631 | 9/1614 | GPAL16UNC |
| 3/4" | 5,5112.5 | 1.210.55 | 3/4" | 1 9/1640 | 2 7/872 | 1 17/3240 | 2 9/3258 | 1 11/3234 | 5/816 | GPAL20UNC |
| 7/8" | 6,6133 | 1.780.81 | 7/8" | 1 21/3242 | 3 7/3282 | 1 23/3245 | 2 17/3264 | 1 1/238 | 3/419 | GPAL22UNC |
| 1" | 8,8184 | 2.511.14 | 1" | 2 5/3255 | 3 3/495 | 2 1/855 | 3 5/1684 | 1 9/1640 | 25/3220 | GPAL24UNC |
| 1 1/8" | 11,0235 | 2.671.21 | 1 1/8" | 2 5/3255 | 3 3/495 | 2 1/855 | 3 5/1684 | 1 9/1640 | 25/3220 | GPAL27UNC |
| 1 1/4" | 13,2276 | 4.201.90 | 1 1/4" | 2 3/860 | 4 1/4108 | 2 5/1660 | 3 29/3299 | 1 15/1651 | 15/1624 | GPAL30UNC |
| 1 1/2" | 17,6368 | 5.562.52 | 1 1/2" | 2 9/1665 | 4 21/32118 | 2 5/868 | 4 19/32117 | 1 25/3248 | 31/3225 | GPAL36UNC |
| 1 3/4" | 22,04610 | 9.394.26 | 1 3/4" | 2 3/470 | 5 19/32142 | 3 5/3280 | 5 5/16135 | 2 13/3261 | 1 7/3231 | GPAL42UNC |
| 2" | 33,06915 | 10.34.66 | 2" | 2 3/470 | 5 19/32142 | 3 5/3280 | 5 5/16135 | 2 13/3261 | 1 7/3231 | GPAL45UNC |
| 2 1/2" | 55,11525 | 21.19.55 | 2 1/2" | 3 3/495 | 7 1/8181 | 3 13/1697 | 5 29/32150 | 2 23/3269 | 1 21/3242 | GPAL56UNC |
Dimensions and ratings sourced directly from manufacturer catalog pages. SlingCenter does not derive or restate ratings. 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. 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. A column shown without a unit carries a designation rather than a measurement — a thread callout or a part type — so it reads the same in both views.
The Green Pin Lifting Eye UNC (ALUNC) is a rotating hoist ring with UNC (Unified National Coarse) thread for North American compatibility. The 360-degree swivel and 180-degree pivot ensure the load aligns naturally with the pull direction, eliminating bolt side loading.
Key Features
- 360-degree swivel and 180-degree pivot
- UNC thread pattern for North American standard tapped holes
- Spring-loaded ring stays upright when unloaded
- Forged alloy steel construction
- Individually proof tested with certificate
Common Applications
- Machinery with UNC tapped lifting holes
- Manufacturing mold and die handling
- Equipment lifting in North American facilities
- Permanent lift points on industrial equipment
Why Green Pin?
The ALUNC provides North American riggers with UNC thread compatibility in a premium rotating hoist ring. Van Beest's individual proof testing ensures every unit meets its rated capacity.
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 |
|---|---|---|---|---|---|
| 1/4" UNC (0.2 Ton) | GPAL06UNC | $17.95 | ✓ In Stock | ||
| 3/8" UNC (0.7 Ton) | GPAL10UNC | $18.30 | ✓ In Stock | ||
| 1/2" UNC (1.0 Ton) | GPAL12UNC | $22.80 | ✓ In Stock | ||
| 5/8" UNC (1.5 Ton) | GPAL16UNC | $27.40 | ✓ In Stock | ||
| 3/4" UNC (2.5 Ton) | GPAL20UNC | $33.45 | ✓ In Stock | ||
| 7/8" UNC (3.0 Ton) | GPAL22UNC | $40.85 | ✓ In Stock | ||
| 1" UNC (4.0 Ton) | GPAL24UNC | $101.50 | ✓ In Stock | ||
| 1-1/4" UNC (6.3 Ton) | GPAL30UNC | $146.50 | ✓ 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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