National Item Identification Number

01-126-7313
011267313
5305-01-126-7313
5305011267313

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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06950

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ALCOA GLOBAL FASTENERS INC
DIV CITY OF INDUSTRY OPERATIONS
13001 TEMPLE AVE
LA PUENTE
CA
91746
805-991-1270

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17446

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73197

---

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80539

---

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92215

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76301

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17446

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58998

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FASTENER INNOVATION TECHNOLOGY INC
DBA F.I.T.
14601 S BROADWAY ST
GARDENA
CA
90248
310-538-1111

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60516

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WEST COAST AEROSPACE INC
220 W E ST
WILMINGTON
CA
90744
310-518-0633

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76301

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Reference Numbers (Part Numbers)

HT4053-4-12A
HT4053-4-12A
HT4053-4-12A
HT4053-4-12A
HT4053-4-12A
HT4053-4-1

Required Categories

THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR

Required Description

UNJF
0.250 INCHES
28
3A
RIGHT-HAND
0.444 INCHES MINIMUM AND
0.494 INCHES M