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A217B8

Screw

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Description

Fastener Length: 1/4", Thread: 6-32, Thread Length: 1/4"

Specifications

Criticality Code Justification Feat
Fastener Length 0.230 inches minimum and 0.250 inches maximum
Head Diameter 0.256 inches minimum and 0.270 inches maximum
Head Height 0.072 inches minimum and 0.082 inches maximum
Head Style Pan no. 2
Internal Drive Style Slot
Length 1/4
Material Steel
Screw Material Steel
Screw Surface Treatment Cadmium
Screw Surface Treatment Specification Dtd904,fscm k7766 national spec single treatment response
Special Features Flight safety critical aircraft part
Thread Class 2a
Thread Diameter 0.138
Thread Direction Right-hand
Thread Length 0.168 inches minimum and 0.250 inches maximum
Thread Qty 32
Thread Qty Per Inch (tpi) 32
Thread Series Designator UNC
Thread Size 6

Other sizes

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

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