National Item Identification Number

01-217-4004
012174004
5305-01-217-4004
5305012174004

National Stock Number

Item Name

SCREW,CAP,SOCKET HEAD

Federal Supply Class

5305

Referenced on: http://automotiveenginemechanics.tpub.com//TM-9-2520-272-34P/css/TM-9-2520-272-34P_437.htm
Referenced on: http://automotiveenginemechanics.tpub.com//TM-9-2520-272-34P/css/TM-9-2520-272-34P_453.htm

Description

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.

Commercial and Government Entity Code (Supplier Data)

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24617

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21450

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NSN (National Stock Number) 5305-01-217-4004, 5305012174004 NIIN (National Identification Number) 01-217-4004, 012174004

Part Numbers (Reference Numbers)

455531
594336

Required Categories

THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR

Required Description

UNC
0.250 INCHES
20
3A
RIGHT-HAND
0.473 INCHES MINIMUM AND
0.605 INCHES MA