5305-01-242-6987, SCREW,TAPPING

National Stock Number:
5305-01-242-6987

Federal Supply Class:
5305

National Item Identification Number:
012426987

Description:
SCREW,TAPPING

Detail:
A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes SCREW, ASSEMBLED WASHER.

Manufacturer Information:

FF-S-107	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MS51869-C23	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

EXTENDED WASHER DIAMETER	0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM
FASTENER LENGTH	0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
HEAD HEIGHT	0.202 INCHES MINIMUM AND 0.240 INCHES MAXIMUM
HEAD STYLE	HEXAGON EXTENDED WASHER
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL	STEEL COMP 410 OVERALL
NONMACHINE NOMINAL THREAD DIAMETER	0.250 INCHES
NONMACHINE THREAD STYLE	BLUNT (SF) OR BLUNT (TYPE SW) OR BLUNT (TYPE TT)
NONDEFINITIVE SPEC/STD DATA	SF TYPE OR SW TYPE OR TT TYPE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
WIDTH BETWEEN FLATS	0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM

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