5305-01-357-4677, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-357-4677

Federal Supply Class:
5305

National Item Identification Number:
013574677

Description:
SCREW,EXTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.

Manufacturer Information:

10124716-102	1S626	TYCO FASTENING PRODUCTS INC
10124716-102	94580	HONEYWELL INTERNATIONAL INC.
66666-3748	06540	NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV
66666-3748	1YGB8	CAREY MANUFACTURING CO, INC

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.710 INCHES MINIMUM AND 0.730 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.940 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.184 INCHES MINIMUM AND 0.188 INCHES MAXIMUM
HARDNESS RATING	24.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD HEIGHT	0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
MINIMUM TENSILE STRENGTH	130000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ+35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNF
WIDTH ACROSS FLATS	0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM

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