ANSI B18.5 Stainless Steel Round Head Square Neck Carriage Bolts
Inch-size round head carriage bolts with a square neck from the supplier ANSI B18.5 catalogue range. Select by material, diameter, threads per inch and length. Metric DIN 603 sizes are listed separately.
Product overview
- Catalogue materials: 304 stainless steel (75 references) and 316 stainless steel (2 references).
- Thread form: full thread for all 77 listed references.
- Catalogue marking: unmarked. The photographs show a sample marked 304; confirm the required marking for the selected item. No strength class is inferred.
- Form: round head with square neck.
Confirm head diameter, neck dimensions, thread tolerance and required standard edition against your drawing. Nuts and washers are not represented as included. Catalogue entries do not confirm current stock.
Catalogue specifications
Open a material and thread-size group. Diameter and length are inch values; TPI means threads per inch. Separate references for the same nominal size remain listed for accurate quotation.
304 stainless / 1/4-20 — 22 catalogue items
| Material |
Diameter (in) |
TPI |
Length (in) |
Thread form |
Item reference |
| 304 |
1/4 |
20 |
1/2 |
Full thread |
5909 |
| 304 |
1/4 |
20 |
5/8 |
Full thread |
5912 |
| 304 |
1/4 |
20 |
3/4 |
Full thread |
5920 |
| 304 |
1/4 |
20 |
7/8 |
Full thread |
5921 |
| 304 |
1/4 |
20 |
1 |
Full thread |
5919 |
| 304 |
1/4 |
20 |
1-1/4 |
Full thread |
5924 |
| 304 |
1/4 |
20 |
1-1/2 |
Full thread |
5927 |
| 304 |
1/4 |
20 |
1-3/4 |
Full thread |
5931 |
| 304 |
1/4 |
20 |
2 |
Full thread |
5934 |
| 304 |
1/4 |
20 |
2-1/4 |
Full thread |
5937 |
| 304 |
1/4 |
20 |
2-1/2 |
Full thread |
5940 |
| 304 |
1/4 |
20 |
2-3/4 |
Full thread |
5943 |
| 304 |
1/4 |
20 |
3 |
Full thread |
311832 |
| 304 |
1/4 |
20 |
3-1/4 |
Full thread |
129381 |
| 304 |
1/4 |
20 |
3-1/2 |
Full thread |
5949 |
| 304 |
1/4 |
20 |
3-3/4 |
Full thread |
129382 |
| 304 |
1/4 |
20 |
3-3/4 |
Full thread |
311835 |
| 304 |
1/4 |
20 |
4 |
Full thread |
311833 |
| 304 |
1/4 |
20 |
4-1/2 |
Full thread |
311834 |
| 304 |
1/4 |
20 |
5 |
Full thread |
5958 |
| 304 |
1/4 |
20 |
5-1/2 |
Full thread |
5961 |
| 304 |
1/4 |
20 |
6 |
Full thread |
5964 |
304 stainless / 5/16-18 — 18 catalogue items
| Material |
Diameter (in) |
TPI |
Length (in) |
Thread form |
Item reference |
| 304 |
5/16 |
18 |
5/8 |
Full thread |
5356 |
| 304 |
5/16 |
18 |
3/4 |
Full thread |
5364 |
| 304 |
5/16 |
18 |
7/8 |
Full thread |
5365 |
| 304 |
5/16 |
18 |
1 |
Full thread |
5363 |
| 304 |
5/16 |
18 |
1-1/4 |
Full thread |
5368 |
| 304 |
5/16 |
18 |
1-1/2 |
Full thread |
5371 |
| 304 |
5/16 |
18 |
1-3/4 |
Full thread |
5374 |
| 304 |
5/16 |
18 |
2 |
Full thread |
5377 |
| 304 |
5/16 |
18 |
2-1/4 |
Full thread |
5380 |
| 304 |
5/16 |
18 |
2-1/2 |
Full thread |
5383 |
| 304 |
5/16 |
18 |
2-3/4 |
Full thread |
5386 |
| 304 |
5/16 |
18 |
3 |
Full thread |
5391 |
| 304 |
5/16 |
18 |
3-1/4 |
Full thread |
5395 |
| 304 |
5/16 |
18 |
3-1/2 |
Full thread |
311841 |
| 304 |
5/16 |
18 |
4 |
Full thread |
311839 |
| 304 |
5/16 |
18 |
4-1/2 |
Full thread |
311842 |
| 304 |
5/16 |
18 |
5 |
Full thread |
5409 |
| 304 |
5/16 |
18 |
5-1/2 |
Full thread |
174307 |
304 stainless / 3/8-16 — 18 catalogue items
| Material |
Diameter (in) |
TPI |
Length (in) |
Thread form |
Item reference |
| 304 |
3/8 |
16 |
3/4 |
Full thread |
2120 |
| 304 |
3/8 |
16 |
7/8 |
Full thread |
2121 |
| 304 |
3/8 |
16 |
1 |
Full thread |
2119 |
| 304 |
3/8 |
16 |
1-1/4 |
Full thread |
2126 |
| 304 |
3/8 |
16 |
1-1/2 |
Full thread |
2132 |
| 304 |
3/8 |
16 |
1-3/4 |
Full thread |
2136 |
| 304 |
3/8 |
16 |
2 |
Full thread |
2139 |
| 304 |
3/8 |
16 |
2-1/4 |
Full thread |
2142 |
| 304 |
3/8 |
16 |
2-1/2 |
Full thread |
2145 |
| 304 |
3/8 |
16 |
2-3/4 |
Full thread |
2148 |
| 304 |
3/8 |
16 |
3 |
Full thread |
2151 |
| 304 |
3/8 |
16 |
3-1/2 |
Full thread |
2154 |
| 304 |
3/8 |
16 |
4 |
Full thread |
316211 |
| 304 |
3/8 |
16 |
4-1/2 |
Full thread |
2160 |
| 304 |
3/8 |
16 |
4-1/2 |
Full thread |
311837 |
| 304 |
3/8 |
16 |
5 |
Full thread |
2163 |
| 304 |
3/8 |
16 |
5-1/2 |
Full thread |
311838 |
| 304 |
3/8 |
16 |
6 |
Full thread |
2169 |
304 stainless / 1/2-13 — 17 catalogue items
| Material |
Diameter (in) |
TPI |
Length (in) |
Thread form |
Item reference |
| 304 |
1/2 |
13 |
1 |
Full thread |
3404 |
| 304 |
1/2 |
13 |
1-1/4 |
Full thread |
3407 |
| 304 |
1/2 |
13 |
1-1/2 |
Full thread |
3410 |
| 304 |
1/2 |
13 |
1-3/4 |
Full thread |
3413 |
| 304 |
1/2 |
13 |
2 |
Full thread |
3418 |
| 304 |
1/2 |
13 |
2-1/4 |
Full thread |
3421 |
| 304 |
1/2 |
13 |
2-1/2 |
Full thread |
3426 |
| 304 |
1/2 |
13 |
2-3/4 |
Full thread |
3431 |
| 304 |
1/2 |
13 |
3 |
Full thread |
3436 |
| 304 |
1/2 |
13 |
3-1/2 |
Full thread |
3442 |
| 304 |
1/2 |
13 |
4 |
Full thread |
3446 |
| 304 |
1/2 |
13 |
4-1/2 |
Full thread |
311830 |
| 304 |
1/2 |
13 |
5 |
Full thread |
3460 |
| 304 |
1/2 |
13 |
5 |
Full thread |
311829 |
| 304 |
1/2 |
13 |
5-1/2 |
Full thread |
311831 |
| 304 |
1/2 |
13 |
5-1/2 |
Full thread |
3465 |
| 304 |
1/2 |
13 |
6 |
Full thread |
3469 |
316 stainless / 1/4-20 — 2 catalogue items
| Material |
Diameter (in) |
TPI |
Length (in) |
Thread form |
Item reference |
| 316 |
1/4 |
20 |
4 |
Full thread |
332250 |
| 316 |
1/4 |
20 |
6 |
Full thread |
332249 |
Request a quotation
Send the item reference, quantity, drawing and delivery destination. For items available in Dongming stock, dispatch can usually be arranged in around 3 days, subject to stock and order confirmation.
Request a Quote