5305-00-207-4199, SCREW,EXTERNALLY RELIEVED BODY

5305-00-207-4194 SCREW,EXTERNALLY RELIEVED BODY

5305-00-207-4200 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-207-4199

Federal Supply Class:
5305

National Item Identification Number:
002074199

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:

310450

56232

LOCKHEED MARTIN CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.277 INCHES MINIMUM AND 0.292 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.230 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.511 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.160 INCHES MINIMUM AND 0.165 INCHES MAXIMUM
HEAD HEIGHT	0.114 INCHES NOMINAL
HEAD STYLE	HEXAGON
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763,CL 7,TY A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER	0.099 INCHES
SECOND DIAMETER FROM HEAD	0.065 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD LENGTH	0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	48
WIDTH BETWEEN FLATS	0.188 INCHES NOMINAL

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