National Item Identification Number

01-273-9387
012739387
5305-01-273-9387
5305012739387

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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56878

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Reference Numbers (Part Numbers)

16171

Required Categories

THREAD QUANTITY PER INCH
THREAD LENGTH
FASTENER LENGTH
SPECIAL FEATURES

Required Description

56
0.250 INCHES NOMINAL
2.000 INCHES NOMINAL
FLATE HEAD,HIGH-STRENGTH