bolts › machine bolts
BACB30NM4K9
Machine Bolt
Description
Fastener Length: 0-63/64", Thread: 1/4-28, Thread Length: 27/64", BACB30 series bolt
Specifications
| Color | Black threads |
|---|---|
| Fastener Length | Between 0.972 inches and 1.002 inches |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 0.552 inches and 0.572 inches |
| Head Height | Between 0.125 inches and 0.140 inches |
| Head Style | Dished hexagon |
| Material | Titanium |
| Material Specification | Ams 4928 assn standard single material response or ams 4967 assn standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Surface Finish | 63.0 microinches bearing surface of head32.0 microinches grip32.0 microinches threads |
| Surface Treatment | Aluminum |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.425 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
| Width Between Flats | Between 0.430 inches and 0.439 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for BACB30NM4K9. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error