bolts › machine bolts
66-11649
Bolt
Description
Fastener Length: 1-", Thread: 1/4-28, Head Width: 1/8", Thread Length: 1/4"
Specifications
| Fastener Length | 1.120 |
|---|---|
| Groove Diameter | 0.191 inches minimum and 0.201 inches maximum |
| Hardness Rating | 33.0 rockwell c |
| Head Diameter | 0.390 inches minimum and 0.400 inches maximum |
| Head Height | 0.050 inches minimum and 0.060 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Hexagon |
| Material | Steel |
| Material Specification | Aisi 4340 assn std single material response |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty 1,cl 3 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.260 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Across Flats | 0.125 inches minimum and 0.127 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for 66-11649. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error