5305-01-389-8744

Find complete technical information, availability, and procurement data for: 5305-01-389-8744
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-389-8744

Item Name Code

18257

Assigment Date

05/05/1994 (32 years ago)

An open coiled spring, wound in various forms and from different shapes and types of materials and finished at the ends, designed to provide resistance to compression forces. Excludes:springs designed for thermal actuation (springs in which the torsion forces are designed to be counteracted by changes in temperature) and spring, reinforcing, hose.

2a thread class, 0.750 inches nominal thread length, right-hand thread direction, hexagon head style, 3.250 inches nominal fastener length

Product Characteristics

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

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.750 inches nominal
Fastener Length: 3.250 inches nominal
Head Style: hexagon
Head Height: 0.150 inches minimum and 0.163 inches maximum
Width Between Flats: 0.428 inches minimum and 0.438 inches maximum
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Material: steel or steel uns k04100 overall
Material Document And Classification: sae j429 gr8 assn std 1st material response or astm a354 assn std 2nd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty2 ty3 fed spec single treatment response overall
Thread Series Designator: unc

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
B1821AH025C325N	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-389-8744?

The FSCG of the NSN 5305-01-389-8744 is 5305

Does the NSN 5305-01-389-8744 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-389-8744 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 5305-01-389-8744 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-389-8744 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 5305-01-389-8744 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Thu, May 5, 1994