5305-01-145-8286, SCREW,EXTERNALLY RELIEVED BODY

5305-01-145-8287 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-145-8286

Federal Supply Class:
5305

National Item Identification Number:
011458286

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:

12275866-1	19207	U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
5305011458286	A00AM	E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE
5305011458286	SCY13	E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE

Techincal Specification:

THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.3125 INCHES
THREAD QUANTITY PER INCH	24
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.560 INCHES NOMINAL
FASTENER LENGTH	1.695 INCHES MINIMUM AND
	1.711 INCHES MAXIMUM
MATERIAL	STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM-A322 ASSN STD SINGLE MATERIAL RESPONSE OR
	ASTM-A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OR
	ZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OR
	QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	28.0 ROCKWELL C MINIMUM AND
	33.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE	HEXAGON
HEAD HEIGHT	0.195 INCHES MINIMUM AND
	0.211 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.489 INCHES MINIMUM AND
	0.500 INCHES MAXIMUM
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FIRST DIAMETER FROM HEAD	0.250 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.940 INCHES NOMINAL

Click here to Register for Free 30-day Trial