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ST3M735-4-13
Bolt
Description
Fastener Length: 1-1/4", Thread: 1/4-28, Thread Length: 21/64"
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.131 inches minimum first hole and 1.161 inches maximum first hole |
|---|---|
| Fastener Length | 1.231 inches minimum and 1.251 inches maximum |
| Grip Diameter | 0.2483 inches minimum and 0.2492 inches maximum |
| Grip Length | 0.812 inches minimum and 0.828 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 43.0 rockwell c maximum |
| Head Height | 0.126 inches minimum and 0.141 inches maximum |
| Head Style | Dished hexagon |
| Length | 1 1/4 |
| Material | Steel |
| Shank Unthreaded Hole Diameter | 0.076 inches minimum first hole and 0.086 inches maximum first hole |
| Special Features | Retaining element in shank |
| Surface Finish | 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2,class 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.283 inches minimum and 0.333 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.430 inches minimum and 0.439 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- 121673-4-13 Commercial 1/4-28 · 0.073 in · Dished hexagon · Steel
- MS27576-4-13 MS 1/4-28 · 0.073 in · Dished hexagon · Steel
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Catalog data updated 2026-07-05. Report a data error