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MS18066-57

Military Standard Setscrew

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Description

Fastener Length: 49/64", Thread: 1/4-28, Head Width: ", Thread Length: 3/4"

Specifications

Fastener Length 0.730 inches minimum and 0.770 inches maximum
Head Style Headless (setscrew)
Internal Drive Style Hexagon
Length 49/64
Locking Feature Patch threads or pellet threads or strip threads
Material Steel
Point Style Flat
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 0.750
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNF
Thread Size 1/4
Width Across Flats 0.124

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 MS18066-57. Try the cross-reference lookup to search by a different part number.

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