5305-01-368-7313, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-368-7313

Federal Supply Class:
5305

National Item Identification Number:
013687313

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:

7370017-2	19133	MCDONNELL DOUGLAS CORP MCDONNELL DOUGLAS AEROSPACE OPNS WEST
7370017-2	76301	THE BOEING COMPANY

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.141 INCHES NOMINAL
COLOR	BLACK BEARING SURFACE OF HEAD
COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.375 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.073 INCHES MINIMUM AND 0.081 INCHES MAXIMUM
HEAD DIAMETER	0.191 INCHES MINIMUM AND 0.225 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION	FED STD 66 FED STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.112 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.122 INCHES NOMINAL
THREAD CLASS	2A
THREAD SERIES DESIGNATOR	UNC
THREAD QUANTITY PER INCH	40

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