5305-01-255-3059, SCREW,EXTERNALLY RELIEVED BODY

5305-01-255-3058 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-255-3059

Federal Supply Class:
5305

National Item Identification Number:
012553059

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:

63B301558P2

16331

LOCKHEED MARTIN CORPORATION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.069 INCHES MINIMUM AND 0.079 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.544 INCHES MINIMUM AND 0.575 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.122 INCHES MINIMUM AND 0.124 INCHES MAXIMUM
HEAD HEIGHT	0.060 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION	AISI B112 ASSN STD SINGLE MATERIAL RESPONSE OR AISI C1215 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.112 INCHES
SECOND DIAMETER FROM HEAD	0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-P-416 TYPE 11,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.180 INCHES MINIMUM
THREAD QUANTITY PER INCH	40
WIDTH BETWEEN FLATS	0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM

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