Spec hardware, served at warp speed.

bolts › machine bolts

BACB30LJ4U9

Bolt

View quote list → Saved parts →

Description

Fastener Length: 61/64", Thread: 1/4-28, Thread Length: 13/32"

Specifications

Fastener Length 0.936 inches minimum and 0.966 inches maximum
Grip Diameter 0.249 inches minimum and 0.250 inches maximum
Grip Length 0.552 inches minimum and 0.572 inches maximum
Head Height 0.125 inches minimum and 0.140 inches maximum
Head Style Dished hexagon
Length 61/64
Material Iron
Material Specification Ams 5731 assn std single material response
Surface Finish 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads
Surface Treatment Passivate
Surface Treatment Specification Qq-p-35 fed spec single treatment response
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 0.364 inches minimum and 0.414 inches maximum
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNJF
Thread Size 1/4
Width Between Flats 0.430 inches minimum and 0.439 inches maximum

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 BACB30LJ4U9. Try the cross-reference lookup to search by a different part number.

Catalog data updated 2026-07-05. Report a data error