bolts › machine bolts
3M1277E4D10A
Bolt
Description
Fastener Length: 1-5/32", Thread: 1/4-28, Thread Length: 7/16"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.135 inches minimum and 1.165 inches maximum |
| Grip Diameter | 0.264 inches minimum and 0.265 inches maximum |
| Grip Length | 0.558 inches minimum and 0.578 inches maximum |
| Head Diameter | 0.358 inches minimum and 0.365 inches maximum |
| Head Height | 0.057 |
| Head Style | Fillister countersunk |
| Length | 1 5/32 |
| Material | Nickel |
| Material Specification | Ams 5662 assn std single material response |
| Part Name Assigned By Controlling Agency | Bolt,100 deg reduced head,gear drive recess,inconel 718 (125 ksi shear),0.0156 inch oversize |
| Special Features | Type of internal drive is six lobe recess per nas 1800; there is a cotter pin hole 0.076 inch dia at the end of the fastener 0.106 inch from tip; there is no lubrication on fastener; material is inconel 718 w/125 ksi shear |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Mil-l-87132,ty 1,gr b w/cetyl alcohol mil spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.410 inches minimum and 0.440 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- 3M1277E4D4A
- 3M1277E4D6A
- 3M1277E4D8A
- 3M1277E4D10A
Cross-reference
No interchangeable or dimensionally similar parts are on record for 3M1277E4D10A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error