5305-00-675-2521, SCREW,EXTERNALLY RELIEVED BODY

5305-00-675-2522 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-675-2521

Federal Supply Class:
5305

National Item Identification Number:
006752521

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:

127291	06481	NORTHROP GRUMMAN SYSTEMS CORPORATION
542-4332-002	13499	ROCKWELL COLLINS, INC.

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	2.891 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	1.320 INCHES MINIMUM AND 1.336 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	2.953 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	1.382 INCHES MINIMUM AND 1.398 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	3.258 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.156 INCHES NOMINAL
FOURTH DIAMETER FROM HEAD	0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
HEAD DIAMETER	0.264 INCHES MINIMUM AND 0.266 INCHES MAXIMUM
HEAD HEIGHT	0.141 INCHES MINIMUM AND 0.169 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	SLOT
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES
SECOND DIAMETER FROM HEAD	0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	580-0025-00 FSCM 90107 MFR REF ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT	PASSIVATE AND PAINT OVERALL
THIRD DIAMETER FROM HEAD	0.156 INCHES NOMINAL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	32

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