Oblong Master Links
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- Alloy Steel with Orange Finish
- Quenched & Tempered
- All links marked with material heat code for traceability, size, SKOOKUM, USA and A8 to signify grade 80.
- Individual Certificate of Conformance* with each link
- Each link is proof tested at the factory two times the working load limit to the Proof Test Load value using fixturing IAW ASTM A-952 with a max contact of 60% of the inside width.
- If a secondary proof test is required to prove workmanship of the assembly, only proof test IAW the manufacturer’s recommendations.
- All Skookum products should be used at or below their working load limit.
- Links 1 1/2” and smaller are drop forged
- Links 1 3/4” and larger are robotically welded
*Sizes 4" and above are proof tested at customer request only; a certificate of conformance is still provided.
Dimensions are in inches unless otherwise noted.
| Size | Size (mm) | WLL 5:1 (TONS) | WLL 4:1 (TONS) | A | B | C |
|---|---|---|---|---|---|---|
| 1/2" | 13 | 3.5 | 4.38 | 0.5 | 2.5 | 5 |
| 5/8" | 16 | 4.5 | 5.63 | 0.63 | 3 | 6 |
| 3/4" | 19 | 6.15 | 7.69 | 0.75 | 2.75 | 5.5 |
| 1" | 26 | 12.18 | 15.23 | 1 | 3.5 | 7 |
| 1-1/4" | 32 | 19.55 | 24.44 | 1.25 | 4.38 | 8.75 |
| 1-1/2" | 38 | 31.15 | 38.94 | 1.5 | 5.25 | 10.5 |
| 1-3/4" | 44 | 42.45 | 53.06 | 1.75 | 6 | 12 |
| 2" | 51 | 51.3 | 64.13 | 2 | 7 | 14 |
| 2-1/4" | 57 | 71.55 | 89.44 | 2.25 | 8 | 16 |
| 2-1/2" | 63 | 80 | 100 | 2.5 | 8 | 16 |
| 2-3/4" | 70 | 108.45 | 135.56 | 2.75 | 9.5 | 16 |
| 3" | 76 | 114 | 142.5 | 3 | 9 | 18 |
| 3-1/4" | 83 | 131.1 | 168 | 3.25 | 10 | 20 |
| 3-1/2" | 89 | 139.5 | 174.38 | 3.5 | 12 | 24 |
| 3-3/4" | 95 | 163.8 | 210 | 3.75 | 10 | 20 |
| 4" | 102 | 186.5 | 233.13 | 4 | 10 | 20 |
| 4-1/2" | 114 | 180 | 225 | 4.5 | 14 | 28 |
| 5" | 127 | 197.5 | 246.88 | 5 | 15 | 30 |
| 6" | 152 | 303.05 | 378.81 | 6 | 18 | 36 |