5305-01-156-5088, SCREW,EXTERNALLY RELIEVED BODY

5305-01-156-5089 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-156-5088

Federal Supply Class:
5305

National Item Identification Number:
011565088

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:

709-4684906 ITEM 13	53711	NAVAL SEA SYSTEMS COMMAND
709-4684906 TEM 13	80064	NAVAL SHIP SYSTEMS COMMAND

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	3.765 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	3.965 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	3.515 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	3
FASTENER LENGTH	4.515 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.622 INCHES MINIMUM AND 0.624 INCHES MAXIMUM
HEAD DIAMETER	1.000 INCHES NOMINAL
HEAD HEIGHT	0.485 INCHES NOMINAL
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 304 OVERALL
NOMINAL THREAD DIAMETER	0.438 INCHES
SECOND DIAMETER FROM HEAD	0.635 INCHES MINIMUM AND 0.637 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD	0.320 INCHES NOMINAL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	3A
THREAD LENGTH	0.550 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNC
THREAD QUANTITY PER INCH	14

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