5305-01-128-5689

Find complete technical information, availability, and procurement data for: 5305-01-128-5689
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-128-5689

Item Name Code

18257

Assigment Date

03/25/1982 (44 years ago)

An item of solid one-piece construction, designed to restrict the flow of a fluid through it. It has an orifice of a smaller size than the diameter of flow into it. Excludes:items such as valve (1), (as modified); and others with an adjustable orifice. Excludes:pipe, tube, or hose fittings with restricted passages and items designed to test fluid flow. For items containing screens or filters, see restrictor unit, fluid flow.

right-hand thread direction, hexagon head style, 1.380 inches nominal thread length, 4.551 inches minimum and 4.573 inches maximum fastener length, 3a thread class

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 1.380 inches nominal
Fastener Length: 4.551 inches minimum and 4.573 inches maximum
Head Style: hexagon
Head Height: 0.302 inches minimum and 0.323 inches maximum
Width Between Flats: 0.736 inches minimum and 0.750 inches maximum
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 20
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Material: steel comp 4140 or steel comp 8640 overall
Material Document And Classification: astm-a322 assn std single material response or astm-a331 assn std single material response overall
Thread Series Designator: unf

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
12301847	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-128-5689?

The FSCG of the NSN 5305-01-128-5689 is 5305

Does the NSN 5305-01-128-5689 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-128-5689 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 5305-01-128-5689 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-128-5689 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 5305-01-128-5689 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Thu, Mar 25, 1982