5305-01-331-8599

Find complete technical information, availability, and procurement data for: 5305-01-331-8599
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-331-8599

Item Name Code

18257

Assigment Date

12/29/1990 (35 years ago)

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

45.0 millimeters nominal fastener length, right-hand thread direction, 41.0 millimeters minimum and 45.0 millimeters maximum thread length, hexagon head style, 10.0 millimeters nominal head height

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Direction: right-hand
Thread Length: 41.0 millimeters minimum and 45.0 millimeters maximum
Fastener Length: 45.0 millimeters nominal
Head Style: hexagon
Head Height: 10.0 millimeters nominal
Width Between Flats: 24.0 millimeters nominal
Nominal Thread Diameter: 16.0 millimeters
Thread Pitch In Millimeters: 2.0
External Thread Tolerance Class: 6h
Material: steel property class 10.9 overall
Surface Treatment: zinc overall
Thread Series Designator: m

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
19M7489	Hexagon Head Cap Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-331-8599?

The FSCG of the NSN 5305-01-331-8599 is 5305

Does the NSN 5305-01-331-8599 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-331-8599 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-01-331-8599 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-331-8599 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-01-331-8599 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Sat, Dec 29, 1990