National Item Identification Number

00-990-2974
009902974
5305-00-990-2974
5305009902974

National Stock Number

Item Name

SCREW,CAP,SOCKET HEAD

Federal Supply Class

5305

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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Reference Numbers (Part Numbers)

LK21262-64
MS21262-64
MS21262-64

Required Categories

THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR

Required Description

UNF
0.250 INCHES
28
3A
RIGHT-HAND
1.000 INCHES MINIMUM
1.235 INCHES MINIMU