ASME B18.3 Stainless Steel Button Head Socket Screws
304 stainless steel inch-series button head socket screws. Compare 166 full-thread catalogue references with the original size and item number.
Selection notes
Match the rounded low-profile head, hexagon socket and full thread to your assembly drawing. The source lists these items as unmarked and does not state a thread tolerance class. Confirm that class, head dimensions and the agreed standard edition when ordering. The separate fine-thread catalogue range is handled independently.
Catalogue specifications
Expand a group to compare the original inch-series size, thread coverage, tolerance class, marking and item reference. Sizes retain the supplier diameter, threads-per-inch and length notation. Availability is confirmed when quoting.
304 stainless steel / 2#-56 — 10 catalogue items
| Catalogue size |
Thread / version |
Marking |
Item reference |
| 2#-56 X 5/32 |
Full thread; finish not stated; thread class not stated |
Unmarked |
293997 |
| 2#-56 X 3/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294002 |
| 2#-56 X 1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294004 |
| 2#-56 X 5/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294006 |
| 2#-56 X 3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294007 |
| 2#-56 X 1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294013 |
| 2#-56 X 5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294014 |
| 2#-56 X 3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294016 |
| 2#-56 X 7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294017 |
| 2#-56 X 1" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294019 |
304 stainless steel / 4#-40 — 17 catalogue items
| Catalogue size |
Thread / version |
Marking |
Item reference |
| 4#-40 X 3/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294040 |
| 4#-40 X 1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294046 |
| 4#-40 X 5/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294051 |
| 4#-40 X 3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294053 |
| 4#-40 X 1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294054 |
| 4#-40 X 5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294056 |
| 4#-40 X 3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294058 |
| 4#-40 X 7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294059 |
| 4#-40 X 1" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294060 |
| 4#-40 X 1-1/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294062 |
| 4#-40 X 1-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294316 |
| 4#-40 X 1-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294317 |
| 4#-40 X 1-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294319 |
| 4#-40 X 1-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294322 |
| 4#-40 X 1-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294323 |
| 4#-40 X 1-7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294324 |
| 4#-40 X 2" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294326 |
304 stainless steel / 6#-32 — 19 catalogue items
| Catalogue size |
Thread / version |
Marking |
Item reference |
| 6#-32 X 3/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294329 |
| 6#-32 X 1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294330 |
| 6#-32 X 5/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294331 |
| 6#-32 X 3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294332 |
| 6#-32 X 1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294333 |
| 6#-32 X 5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294334 |
| 6#-32 X 3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294335 |
| 6#-32 X 7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294336 |
| 6#-32 X 1" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294337 |
| 6#-32 X 1-1/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294338 |
| 6#-32 X 1-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294339 |
| 6#-32 X 1-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294341 |
| 6#-32 X 1-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294342 |
| 6#-32 X 1-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294343 |
| 6#-32 X 1-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294344 |
| 6#-32 X 1-7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294345 |
| 6#-32 X 2" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294347 |
| 6#-32 X 2-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294348 |
| 6#-32 X 2-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294350 |
304 stainless steel / 8#-32 — 22 catalogue items
| Catalogue size |
Thread / version |
Marking |
Item reference |
| 8#-32 X 1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294351 |
| 8#-32 X 5/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294353 |
| 8#-32 X 3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294354 |
| 8#-32 X 1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294355 |
| 8#-32 X 5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294356 |
| 8#-32 X 3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294357 |
| 8#-32 X 7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294358 |
| 8#-32 X 1" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294359 |
| 8#-32 X 1-1/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294360 |
| 8#-32 X 1-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294362 |
| 8#-32 X 1-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294364 |
| 8#-32 X 1-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294365 |
| 8#-32 X 1-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294366 |
| 8#-32 X 1-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294367 |
| 8#-32 X 1-7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294368 |
| 8#-32 X 2" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294369 |
| 8#-32 X 2-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294370 |
| 8#-32 X 2-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294372 |
| 8#-32 X 2-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294373 |
| 8#-32 X 2-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294374 |
| 8#-32 X 2-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294375 |
| 8#-32 X 3" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294376 |
304 stainless steel / 10#-24 — 24 catalogue items
| Catalogue size |
Thread / version |
Marking |
Item reference |
| 10#-24 X 1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294630 |
| 10#-24 X 5/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294631 |
| 10#-24 X 3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294633 |
| 10#-24 X 1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294634 |
| 10#-24 X 5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294635 |
| 10#-24 X 3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294636 |
| 10#-24 X 7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294637 |
| 10#-24 X 1" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294638 |
| 10#-24 X 1-1/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294639 |
| 10#-24 X 1-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294640 |
| 10#-24 X 1-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294641 |
| 10#-24 X 1-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294642 |
| 10#-24 X 1-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294643 |
| 10#-24 X 1-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294644 |
| 10#-24 X 1-7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294645 |
| 10#-24 X 2" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294646 |
| 10#-24 X 2-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294647 |
| 10#-24 X 2-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294648 |
| 10#-24 X 2-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294649 |
| 10#-24 X 2-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294650 |
| 10#-24 X 2-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294651 |
| 10#-24 X 3" |
Full thread; finish not stated; thread class not stated |
Unmarked |
294652 |
| 10#-24 X 3-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294653 |
| 10#-24 X 3-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
294654 |
304 stainless steel / 1/4-20 — 27 catalogue items
| Catalogue size |
Thread / version |
Marking |
Item reference |
| 1/4-20 X 5/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295265 |
| 1/4-20 X 3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295267 |
| 1/4-20 X 7/16 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295268 |
| 1/4-20 X 1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295269 |
| 1/4-20 X 5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295270 |
| 1/4-20 X 3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295272 |
| 1/4-20 X 7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295273 |
| 1/4-20 X 1" |
Full thread; finish not stated; thread class not stated |
Unmarked |
295274 |
| 1/4-20 X 1-1/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295277 |
| 1/4-20 X 1-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295278 |
| 1/4-20 X 1-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295279 |
| 1/4-20 X 1-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295280 |
| 1/4-20 X 1-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295281 |
| 1/4-20 X 1-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295282 |
| 1/4-20 X 1-7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295283 |
| 1/4-20 X 2" |
Full thread; finish not stated; thread class not stated |
Unmarked |
295284 |
| 1/4-20 X 2-1/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295285 |
| 1/4-20 X 2-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295286 |
| 1/4-20 X 2-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295287 |
| 1/4-20 X 2-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295288 |
| 1/4-20 X 2-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295289 |
| 1/4-20 X 2-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295290 |
| 1/4-20 X 3" |
Full thread; finish not stated; thread class not stated |
Unmarked |
295291 |
| 1/4-20 X 3-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295292 |
| 1/4-20 X 3-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295293 |
| 1/4-20 X 3-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295294 |
| 1/4-20 X 4" |
Full thread; finish not stated; thread class not stated |
Unmarked |
295295 |
304 stainless steel / 5/16-18 — 24 catalogue items
| Catalogue size |
Thread / version |
Marking |
Item reference |
| 5/16-18*3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295511 |
| 5/16-18*1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295512 |
| 5/16-18*5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295513 |
| 5/16-18*3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295514 |
| 5/16-18*7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295515 |
| 5/16-18*1" |
Full thread; finish not stated; thread class not stated |
Unmarked |
295516 |
| 5/16-18*1-1/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295517 |
| 5/16-18*1-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295518 |
| 5/16-18*1-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295519 |
| 5/16-18*1-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295520 |
| 5/16-18*1-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295521 |
| 5/16-18*1-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295522 |
| 5/16-18*1-7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
295523 |
| 5/16-18*2" |
Full thread; finish not stated; thread class not stated |
Unmarked |
295524 |
| 5/16-18*2-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296140 |
| 5/16-18*2-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296141 |
| 5/16-18*2-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296142 |
| 5/16-18*2-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296143 |
| 5/16-18*2-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296144 |
| 5/16-18*3" |
Full thread; finish not stated; thread class not stated |
Unmarked |
296145 |
| 5/16-18*3-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296686 |
| 5/16-18*3-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296687 |
| 5/16-18*3-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296688 |
| 5/16-18*4" |
Full thread; finish not stated; thread class not stated |
Unmarked |
296689 |
304 stainless steel / 3/8-16 — 23 catalogue items
| Catalogue size |
Thread / version |
Marking |
Item reference |
| 3/8-16*1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296690 |
| 3/8-16*5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296691 |
| 3/8-16*3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296692 |
| 3/8-16*7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296693 |
| 3/8-16*1" |
Full thread; finish not stated; thread class not stated |
Unmarked |
296694 |
| 3/8-16*1-1/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296695 |
| 3/8-16*1-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296696 |
| 3/8-16*1-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296697 |
| 3/8-16*1-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296698 |
| 3/8-16*1-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296699 |
| 3/8-16*1-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296700 |
| 3/8-16*1-7/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296701 |
| 3/8-16*2" |
Full thread; finish not stated; thread class not stated |
Unmarked |
296702 |
| 3/8-16*2-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296703 |
| 3/8-16*2-3/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296704 |
| 3/8-16*2-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296705 |
| 3/8-16*2-5/8 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296706 |
| 3/8-16*2-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296707 |
| 3/8-16*3" |
Full thread; finish not stated; thread class not stated |
Unmarked |
296708 |
| 3/8-16*3-1/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296709 |
| 3/8-16*3-1/2 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296710 |
| 3/8-16*3-3/4 |
Full thread; finish not stated; thread class not stated |
Unmarked |
296711 |
| 3/8-16*4" |
Full thread; finish not stated; thread class not stated |
Unmarked |
296712 |
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