5305-99-638-1602, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-99-638-1602

Federal Supply Class:
5305

National Item Identification Number:
996381602

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:

5357	B1384	CLARK MASTS TEKSAM NV
5357	K3456	CLARK MASTS TEKSAM LTD
5357A	K3456	CLARK MASTS TEKSAM LTD

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	0.223 INCHES MINIMUM AND 0.233 INCHES MAXIMUM
CHAMFER ANGLE	45.0 DEGREES NOMINAL
FASTENER LENGTH	0.477 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.185 INCHES MINIMUM AND 0.187 INCHES MAXIMUM
HEAD DIAMETER	0.303 INCHES MINIMUM AND 0.323 INCHES MAXIMUM
HEAD HEIGHT	0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM
HEAD STYLE	FILLISTER
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	BS 970,EN1A (USE STD715) NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE
MATERIAL	STEEL
POINT LENGTH	0.006 INCHES MINIMUM AND 0.026 INCHES MAXIMUM
POINT STYLE	FLAT
NOMINAL THREAD DIAMETER	3.60 MILLIMETERS
SECOND DIAMETER FROM HEAD	0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM
THREAD CLASS	FREE
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	BA
THREAD PITCH IN MILLIMETERS	0.66

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