5305-99-501-1201, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-99-501-1201

Federal Supply Class:
5305

National Item Identification Number:
995011201

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:

SUM 3016-6	K5294	GE AVIATION SYSTEMS LIMITED
SUM3016-6	K5294	GE AVIATION SYSTEMS LIMITED

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.395 INCHES NOMINAL
FASTENER LENGTH	0.515 INCHES NOMINAL AND 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
HEAD STYLE	PAN NO. 2
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	BSI BS S147 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL OR BSI BS S154 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL OR SMITHS INDUSTRIES LTD 1200-002 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.112 INCHES
SECOND DIAMETER FROM HEAD	0.072 INCHES MINIMUM AND 0.076 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	FASMITHS INDUSTRIES LTD, 0731-611 (W/O PASSIVATION) MFR REF 1ST TREATMENT RESPONSE OVERALL OR BLACKEN,SMITHS INDUSTRIES LTD, 0722-606 MFR REF 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THREAD LENGTH	0.120 INCHES NOMINAL AND 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD QUANTITY PER INCH	40
THREAD SERIES DESIGNATOR	UNC
FIRST DIAMETER FROM HEAD	0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM
HEAD DIAMETER	0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM
HEAD HEIGHT	0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM

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