5305-01-503-8648

Find complete technical information, availability, and procurement data for: 5305-01-503-8648
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-503-8648

Item Name Code

18257

Assigment Date

01/10/2003 (23 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

2a thread class, right-hand thread direction, 4.250 inches nominal thread length, 4.250 inches nominal fastener length, hexagon head style

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: 4.250 inches nominal
Fastener Length: 4.250 inches nominal
Head Style: hexagon
Head Height: 0.378 inches minimum and 0.403 inches maximum
Width Between Flats: 0.922 inches minimum and 0.938 inches maximum
End Item Identification: door horiz sl
Nominal Thread Diameter: 0.625 inches
Thread Quantity Per Inch: 11
Material: steel overall
Material Document And Classification: saej995; grade 5 assn std single material response overall
Surface Treatment: zinc 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
124-6938645 PART 312	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-503-8648?

The FSCG of the NSN 5305-01-503-8648 is 5305

Does the NSN 5305-01-503-8648 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-503-8648 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 5305-01-503-8648 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-503-8648 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 5305-01-503-8648 was assigned to the Federal Catalog?

It was assigned 23 years ago, on Fri, Jan 10, 2003