5305-01-280-6687, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-280-6687

Federal Supply Class:
5305

National Item Identification Number:
012806687

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:

3680498

82577

RAYTHEON COMPANY

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER	0.458 INCHES MINIMUM AND 0.462 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.261 INCHES MINIMUM AND 0.272 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SIXTH DIAMETER	0.558 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER	0.293 INCHES MINIMUM AND 0.302 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER	0.518 INCHES MINIMUM AND 0.522 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.243 INCHES MINIMUM AND 0.252 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	5
FASTENER LENGTH	0.688 INCHES MINIMUM AND 0.692 INCHES MAXIMUM
FIFTH DIAMETER FROM HEAD	0.158 INCHES MINIMUM AND 0.164 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
FOURTH DIAMETER FROM HEAD	0.095 INCHES MINIMUM AND 0.100 INCHES MAXIMUM
HEAD DIAMETER	0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
HEAD HEIGHT	0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.112 INCHES
SECOND DIAMETER FROM HEAD	0.095 INCHES MINIMUM AND 0.097 INCHES MAXIMUM
SIXTH DIAMETER FROM HEAD	0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.130 INCHES NOMINAL
THIRD DIAMETER FROM HEAD	0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
THREAD QUANTITY PER INCH	40
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS	0.141 INCHES MINIMUM AND 0.143 INCHES MAXIMUM

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