1680-01-564-5858 COVER,SEAT CUSHION,AIRCRAFT Index 4720-01-564-5860 HOSE ASSEMBLY,NONMETALLIC

National Stock Number:
5305-01-564-5859

Federal Supply Class:
5305

National Item Identification Number:
015645859

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:
12759-008050Y3H3FASTENAL COMPANY
291620Y3H3FASTENAL COMPANY


Techincal Specification:
FASTENER LENGTH0.500 INCHES NOMINAL
HEAD STYLEPAN
PART NAME ASSIGNED BY CONTROLLING AGENCY1/4 INCHES-20 X 1/2 INCHES PHILLIPS PAN HEAD ZINC PLATED MACHINE SCREW
NOMINAL THREAD DIAMETER0.250 INCHES
SCREW MATERIALSTEEL
SCREW SURFACE TREATMENTZINC
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND


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