5305-00-095-4052, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-095-4052

Federal Supply Class:
5305

National Item Identification Number:
000954052

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:

10-52551	28839	TELEDYNE INDUSTRIES INC TELEDYNE POWER SYSTEMS DIV
10-52551	59501	UNISON INDUSTRIES LLC
10-52551	77820	AMPHENOL CORP

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.593 INCHES MINIMUM
FASTENER LENGTH	1.730 INCHES MINIMUM
MATERIAL	STEEL COMP 6150 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6448 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE	FILLISTER
HEAD DIAMETER	0.344 INCHES NOMINAL
HEAD HEIGHT	0.250 INCHES NOMINAL
INTERNAL DRIVE STYLE	SLOT
HOLE CONFIGURATION STYLE	HEXAGON FLATS
HOLE TYPE	DRILLED
HOLE QUANTITY	5
HOLE DIAMETER	0.078 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FIRST DIAMETER FROM HEAD	0.250 INCHES NOMINAL
SECOND DIAMETER FROM HEAD	0.375 INCHES NOMINAL
THIRD DIAMETER FROM HEAD	0.190 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.250 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.344 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	1.137 INCHES NOMINAL
THE MANUFACTURERS DATA
MANUFACTURERS CODE	28839
DESIGN CONTROL REFERENCE	10-52551

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