Part Number: ANSI B18.6.1

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CONDITION:
NS
AMERICAN NATIONAL STANDARDS INSTITUTE, INCORPORATED80204
FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC81348
FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC81348
AMERICAN NATIONAL STANDARDS INSTITUTE, INCORPORATED80204
MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M96906
FASTENER LENGTH0.828 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER0.340 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
NONMACHINE THREAD STYLEWOOD SCREW (TYPE WD)
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
NONMACHINE NOMINAL THREAD DIAMETER0.190 INCHES
MATERIALSTEEL OVERALL
SURFACE TREATMENTZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM-B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 2C STYLE
An unhardened externally threaded fastener whose continuous thread extends from a gimlet point for a distance of approximately two-thirds of the length of the screw and which is designed to be driven with an inserted driver.