5305-01-186-3440, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-186-3440

Federal Supply Class:
5305

National Item Identification Number:
011863440

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:

875-013-03208-1

07421

L3HARRIS INTERSTATE ELECTRONICS CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
COUNTERSINK ANGLE	100.0 DEGREES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM
HEAD HEIGHT	0.060 INCHES NOMINAL
HEAD DIAMETER	0.279 INCHES NOMINAL
HEAD STYLE	FLAT COUNTERSUNK UNDERCUT
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OVERALL
NOMINAL THREAD DIAMETER	0.138 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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