5305-01-038-4759, SETSCREW

National Stock Number:
5305-01-038-4759

Federal Supply Class:
5305

National Item Identification Number:
010384759

Description:
SETSCREW

Detail:
An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.

Manufacturer Information:

AN565F428H20	81352	AIR FORCE-NAVY AERONAUTICAL SPECIFICATIONS PROMULGATED BY AERONAUTICAL STANDARDS GROUP
FF-S-200	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC

Techincal Specification:

DEPARTURE FROM CITED DOCUMENT	AS MODIFIED BY MATERIAL
FASTENER LENGTH	1.231 INCHES MINIMUM AND 1.269 INCHES MAXIMUM
HARDNESS RATING	45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	HEADLESS (SETSCREW)
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL	STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 8740 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
NONDEFINITIVE SPEC/STD DATA	1 TYPE AND 3 STYLE
POINT STYLE	OVAL
WIDTH ACROSS FLATS	0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.231 INCHES MINIMUM AND 1.269 INCHES MAXIMUM
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNF

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