5305-01-177-0851, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-177-0851

Federal Supply Class:
5305

National Item Identification Number:
011770851

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:

69403-1	13993	BAE SYSTEMS SPACE & MISSION SYSTEMS INC.
69403-1	56878	SPS TECHNOLOGIES, LLC

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.190 INCHES
THREAD QUANTITY PER INCH	32
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
MATERIAL	STEEL COMP H11 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND
	CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-8837 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	51.0 ROCKWELL C MINIMUM AND
	53.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	260000 POUNDS PER SQUARE INCH
HEAD STYLE	FLAT COUNTERSUNK
HEAD DIAMETER	0.371 INCHES MINIMUM AND
	0.385 INCHES MAXIMUM
COUNTERSINK ANGLE	100.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
POINT STYLE	OVAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FIRST DIAMETER FROM HEAD	0.130 INCHES MINIMUM AND
	0.135 INCHES MAXIMUM
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	13993
MFR SOURCE CONTROLLING REFERENCE	69403-1

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