5305-01-470-1420 SCREW,CAP,HEXAGON HEAD Index 4810-01-470-1422 VALVE,BUTTERFLY

National Stock Number:
5305-01-470-1421

Federal Supply Class:
5305

National Item Identification Number:
014701421

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:
88-20555-230554DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER


Techincal Specification:
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
FASTENER LENGTH0.500 INCHES NOMINAL
HEAD DIAMETER0.308 INCHES NOMINAL
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLECROSS RECESS TYPE II
NOMINAL THREAD DIAMETER0.1640 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW,MACHINE-FLAT COUNTERSUNK HEAD,82 DEGREES
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.400 INCHES NOMINAL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH32


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