5305-00-458-2254, SCREW,EXTERNALLY RELIEVED BODY

5305-00-458-2253 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-458-2254

Federal Supply Class:
5305

National Item Identification Number:
004582254

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:

1084427-2	56232	LOCKHEED MARTIN CORPORATION
2567078-2	10001	NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.905 INCHES MINIMUM AND 0.969 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	1.546 INCHES MINIMUM AND 1.578 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM
HEAD HEIGHT	0.187 INCHES MINIMUM AND 0.251 INCHES MAXIMUM
HEAD STYLE	HEXAGON
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER	0.312 INCHES
WIDTH BETWEEN FLATS	0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	2A
THREAD LENGTH	0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNC
THREAD QUANTITY PER INCH	18

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