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.
Specifications — Full Dimensions by Size
| Size (in)(mm) | WLL (t) | Weight (lb)(kg) | A (in)(mm) | B (in)(mm) | C (in)(mm) | D (in)(mm) | E (in)(mm) | F (in)(mm) | G (in)(mm) | Stock # |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/4"6mm | 0.2 | 0.110.05 | 1/41/4 | 25/3220 | 1 11/3234 | 25/3220 | 25/3220 | 21/3217 | 9/327 | GPAL06UNC |
| 3/8"10mm | 0.7 | 0.170.08 | 3/83/8 | 25/3220 | 1 1/238 | 7/822 | 1 3/1630 | 3/419 | 5/168 | GPAL10UNC |
| 1/2"12mm | 1 | 0.310.14 | 1/21/2 | 31/3225 | 1 27/3247 | 1 1/3227 | 1 13/3236 | 29/3223 | 13/3210 | GPAL12UNC |
| 5/8"16mm | 1.5 | 0.770.35 | 5/85/8 | 1 13/3236 | 2 17/3264 | 1 13/3236 | 1 9/1640 | 1 3/1630 | 1/213 | GPAL16UNC |
| 3/4"20mm | 2.5 | 1.480.67 | 3/43/4 | 1 25/3245 | 3 5/3280 | 1 25/3245 | 1 31/3250 | 1 1/238 | 19/3215 | GPAL20UNC |
| 7/8"24mm | 3.5 | 2.341.06 | 7/87/8 | 2 3/3252 | 3 23/3294 | 2 3/3252 | 2 5/3255 | 1 11/1643 | 21/3217 | GPAL24UNC |
| 1"27mm | 4.9 | 3.441.56 | 11 | 2 5/1658 | 4 7/32107 | 2 5/1658 | 2 3/860 | 1 29/3248 | 25/3220 | GPAL27UNC |
| 1 1/4"30mm | 6.3 | 4.452.02 | 1 1/41 1/4 | 2 7/1662 | 4 1/2114 | 2 7/1662 | 2 3/470 | 2 1/1652 | 7/822 | GPAL30UNC |
| 1 1/4"33mm | 7.5 | 6.172.80 | 1 1/41 1/4 | 2 3/470 | 4 29/32125 | 2 3/470 | 2 15/1675 | 2 5/1658 | 31/3225 | GPAL33UNC |
| 1 1/2"36mm | 8 | 8.313.77 | 1 1/21 1/2 | 376 | 5 9/32134 | 376 | 3 5/1684 | 2 7/1662 | 1 1/1627 | GPAL36UNC |
| 1 3/4"42mm | 10 | 11.95.40 | 1 3/41 3/4 | 3 11/3285 | 5 31/32152 | 3 11/3285 | 3 3/495 | 2 3/470 | 1 3/1630 | GPAL42UNC |
| 2"48mm | 15 | 16.07.26 | 22 | 3 17/3290 | 6 5/8168 | 3 17/3290 | 4 11/32110 | 3 1/1678 | 1 3/835 | GPAL48UNC |
| 2 1/2"56mm | 25 | 21.19.55 | 2 1/22 1/2 | 3 3/495 | 7 1/8181 | 3 13/1697 | 5 29/32150 | 2 23/3269 | 1 21/3242 | GPAL56UNC |
Dimensions sourced directly from manufacturer catalog pages.
Standards & Compliance
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).
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.
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 | $18.95 | ✓ In Stock | ||
| 1/2" UNC (1.0 Ton) | GPAL12UNC | $22.95 | ✓ In Stock | ||
| 5/8" UNC (1.5 Ton) | GPAL16UNC | $27.95 | ✓ In Stock | ||
| 3/4" UNC (2.5 Ton) | GPAL20UNC | $33.95 | ✓ In Stock | ||
| 7/8" UNC (3.0 Ton) | GPAL22UNC | $40.95 | ✓ In Stock | ||
| 1" UNC (4.0 Ton) | GPAL24UNC | $100.95 | ✓ In Stock | ||
| 1-1/4" UNC (6.3 Ton) | GPAL30UNC | $145.95 | ✓ In Stock |
Bulk order? Email sales@slingcenter.com with your list — we'll build a single quote.
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