National Item Identification Number

01-535-5570
015355570
5305-01-535-5570
5305015355570

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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80204

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Reference Numbers (Part Numbers)

B1831DH050010N
B1831DH050010N

Required Categories

THREAD SERIES DESIGNATOR
THREAD QUANTITY PER INCH
THREAD CLASS
THREAD DIRECTI

Required Description

UNC
20
A1
RIGHT-HAND
STEEL CORROSION RESISTING OVERALL
ASTM A380 ASSN STD A