National Item Identification Number

00-292-5491
002925491
5305-00-292-5491
5305002925491

National Stock Number

Item Name

SCREW,CLOSE TOLERANCE

Federal Supply Class

5305

Description

A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Commercial and Government Entity Code (Supplier Data)

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92215

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73197

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76301

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50394

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SPS TECHNOLOGIES INC UNBRAKO DIV
HIGHLAND AVE
JENKINTOWN
PA
19046
215-572-3000

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Reference Numbers (Part Numbers)

HT410A4-20
HT42UA20
3M54-4-20
54268-4-20

Required Categories

Required Description