5305-00-688-1220, SCREW,EXTERNALLY RELIEVED BODY

5310-00-688-1226 NUT,SELF-LOCKING,CLINCH

National Stock Number:
5305-00-688-1220

Federal Supply Class:
5305

National Item Identification Number:
006881220

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:

536372	73030	HAMILTON SUNDSTRAND CORPORATION
536372	7CNG1	FDH DEFENSE AFTERMARKET, LLC

Techincal Specification:

COUNTERSINK ANGLE	80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.050 INCHES MINIMUM AND 0.055 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.234 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.080 INCHES MINIMUM AND 0.084 INCHES MAXIMUM
HEAD HEIGHT	0.055 INCHES MINIMUM AND 0.067 INCHES MAXIMUM
HEAD DIAMETER	0.210 INCHES MINIMUM AND 0.225 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK UNDERCUT
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 4120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	ALUMINUM ALLOY 2024 OVERALL
NOMINAL THREAD DIAMETER	0.112 INCHES
SURFACE TREATMENT	ANODIZE OVERALL
THREAD LENGTH	0.116 INCHES MINIMUM
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	40

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