5305-01-072-0636 SCREW,MACHINE Index 5305-01-072-0638 SCREW,MACHINE

National Stock Number:
5305-01-072-0637

Federal Supply Class:
5305

National Item Identification Number:
010720637

Description:
SCREW,MACHINE

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal 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. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.


Manufacturer Information:
14418-01010138ASTRONAUTICS CORPORATION OF AMERICA


Techincal Specification:
FASTENER LENGTH0.500 INCHES NOMINAL
HEAD HEIGHT0.067 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
HEAD STYLEHEXAGON
NOMINAL THREAD DIAMETER0.138 INCHES
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-764,CLASS 303,COND A FED SPEC SINGLE MATERIAL RESPONSE
SCREW MATERIALSTEEL COMP 303
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
SCREW SURFACE TREATMENTPASSIVATE
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.428 INCHES NOMINAL
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
WIDTH BETWEEN FLATS0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM


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