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ASME B18.31.2 Table 2 High Strengthl Stud Bolt / Gr.8.8 Black Oxide Double End Thread Bar
Double-ended stud is a cylindrical fastener with threads at both ends. Widely used in electric power, chemical industry, oil refining, valve, railroad, bridge, steel structure, automobile and motorcycle parts, machinery, boiler steel structure, crane tower, large span steel structure and large buildings, etc.
There are two types of double-headed bolts in common use (also known as all-thread studs), with two types of threads: coarse threads with M and nominal diameter, and fine threads with M and nominal diameter x pitch.
Drawing:
Size:
| Mon | 1-1/4 | 1-3/8 | 1-1/2 | 1-3/4 | 2 | 2-1/4 | 2-1/2 | 2-3/4 | 3 | 3-1/14 | 3-1/2 |
| p | 7 | 6 | 5 | 5 | 4.5 | 4.5 | 4 | 4 | 4 | 4 | 4 |
| c max | 0.286 | 0.333 | 0.333 | 0.4 | 0.444 | 0.444 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| ds max | 1.25 | 1.375 | 1.5 | 1.75 | 2 | 2.25 | 25 | 2.75 | 3 | 3.25 | 3.5 |
| ds min | 1.231 | 1.354 | 1.479 | 1.727 | 1.975 | 2.225 | 2473 | 2.723 | 2.973 | 3.223 | 3.473 |
Photos:
Surface treatment:
Double-headed studs generally require surface treatment, bolt surface treatment of many kinds, generally commonly used electroplating, blackening, oxidation, phosphating, non-electrolytic zinc flake coating treatment, etc.