5305-01-228-3277, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-228-3277

Federal Supply Class:
5305

National Item Identification Number:
012283277

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:

13082133	04939	LOCKHEED MARTIN CORPORATION
13082133	58260	PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	1.250 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.140 INCHES NOMINAL
HEAD HEIGHT	0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM
HEAD DIAMETER	0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM
HEAD STYLE	PAN
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES
POINT LENGTH	0.190 INCHES NOMINAL
POINT STYLE	CUP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.810 INCHES NOMINAL
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNF

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