National Item Identification Number

01-197-9418
011979418
5305-01-197-9418
5305011979418

National Stock Number

Item Name

SCREW,CAP,HEXAGON HEAD

Federal Supply Class

5305

Description

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.

Commercial and Government Entity Code (Supplier Data)

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80204

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NSN (National Stock Number) 5305-01-197-9418, 5305011979418 NIIN (National Identification Number) 01-197-9418, 011979418

Part Numbers (Reference Numbers)

B1821BH056C500N
MS90728-152

Required Categories

THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR

Required Description

UNC
0.562 INCHES
12
2A
RIGHT-HAND
4.698 INCHES MINIMUM AND
4.792 INCHES MA