bolts › machine bolts
490144
Bolt
Description
Fastener Length: 7/8", Hole Diameter: 5/64", Thread: 1/4-C8, Thread Length: 51/64"
Specifications
| Extended Washer Diameter | 0.428 inches minimum and 0.448 inches maximum |
|---|---|
| Extended Washer Thickness | 0.060 inches minimum and 0.070 inches maximum |
| Fastener Length | 0.865 inches minimum and 0.885 inches maximum |
| Features Provided | Finished head |
| Hardness Rating | 30.0 rockwell c minimum and 38.0 rockwell c maximum |
| Head Height | 0.320 inches minimum and 0.340 inches maximum |
| Head Style | Double hexagon w/hole |
| Hole Configuration Style | Double hexagon longitudinal hole |
| Hole Diameter | 0.070 |
| Hole Quantity | 4 |
| Hole Type | Drilled |
| Length | 7/8 |
| Material | CRES |
| Material Specification | Ams 6304 assn std single material response |
| Surface Finish | 32.0 microinches threads, 63.0 microinches bearing surface of head |
| Surface Treatment | Nickel and cadmium |
| Surface Treatment Specification | Ams 2416 assn std all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.794 inches minimum and 0.814 inches maximum |
| Thread Qty Per Inch (tpi) | C8 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.304 inches minimum and 0.313 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for 490144. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error