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BACB30NN4K12
Machine Bolt
Description
Fastener Length: 1-11/64", Thread: 1/4-28, Thread Length: 7/16
Specifications
| Color | Black threads |
|---|---|
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
| Drive Style | Cross |
| Fastener Length | Between 1.160 inches and 1.190 inches |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 0.740 inches and 0.760 inches |
| Head Diameter | Between 0.465 inches and 0.510 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| 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 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for BACB30NN4K12. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error