5305-01-315-3779, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-315-3779

Federal Supply Class:
5305

National Item Identification Number:
013153779

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:

137021-1	37695	RAYTHEON COMPANY
SNT-50519-C02-E33	02310	PATTONAIR USA INC

Techincal Specification:

COLOR	BLACK FASTENER
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.455 INCHES MINIMUM AND 0.485 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.735 INCHES MINIMUM AND 0.780 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.053 INCHES MINIMUM AND 0.056 INCHES MAXIMUM
HEAD DIAMETER	0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM
HEAD HEIGHT	0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM
HEAD STYLE	PAN NO. 2
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 3304 ASSN STD SINGLE MATERIAL RESPONSE RING
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-763 FED SPEC 3RD MATERIAL RESPONSE OR ASTM A493 ASSN STD 4TH MATERIAL RESPONSE FASTENER
MATERIAL	RUBBER SILICONE CLASS Q RING
MATERIAL	STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 384 FASTENER
NOMINAL THREAD DIAMETER	0.086 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924 CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENT	OXIDE FASTENER
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.250 INCHES MINIMUM AND 0.325 INCHES MAXIMUM
THREAD QUANTITY PER INCH	56
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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