National Item Identification Number

00-151-8660

National Stock Number

Item Name

SCREW,SHOULDER

Federal Supply Class

5305

Description

An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 IN.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below No. 10 (0.190 IN.) (5 mm) nominal diameter. No. 10 (0.190 IN.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use SCREW, EXTERNALLY RELIEVED BODY. For items with a No. 10 (0.190 IN.) (5 mm) or larger thread diameter without an inserted driver head, use BOLT, SHOULDER. Excludes BOLT, INTERNAL WRENCHING and SCREW, CAP, SOCKET HEAD.

Commercial and Government Entity Code (Supplier Data)

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17446

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17446

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26512

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0ZC92

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HEARTLAND PRECISION FASTENERS INC
301 PRAIRIE VILLAGE DR
NEW CENTURY
KS
66031
913-829-4447

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27624

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Reference Numbers (Part Numbers)

BM19070-4-921
BM19070-4-921
BM19070-921
BM19070-921
GS551P-4921
GS551P-4921

Required Categories

THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR

Required Description

UNF
0.250 INCHES
28
2A
RIGHT-HAND
0.406 INCHES MINIMUM AND
0.436 INCHES MA