5305-01-491-8511

Find complete technical information, availability, and procurement data for: 5305-01-491-8511
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-491-8511

Item Name Code

18257

Assigment Date

11/02/2001 (24 years ago)

A circular shaped item designed to be installed in a specially prepared groove or counterbore to provide a low pressure seal. It may be supplied in various cross-sectional shapes. It may be solid or cut through to allow for installation and fitting. Excludes items whose primary function is to provide sealing, wiping, or wearing surface capabilities for piston configurations. See also ring,piston and ring,wiper.

2a thread class, 11 thread quantity per inch, 1.000 inches nominal fastener length, right-hand thread direction, 0.625 inches nominal thread diameter

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
Fastener Length: 1.000 inches nominal
Nominal Thread Diameter: 0.625 inches
Thread Quantity Per Inch: 11
Material: steel uns k04100 overall
Material Document And Classification: astma354, grade bd assn std single material response overall
Surface Treatment: zinc overall
Surface Treatment Document And Classification: astma153 assn std 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
S210NA38CAP17354BNCG1	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-491-8511?

The FSCG of the NSN 5305-01-491-8511 is 5305

Does the NSN 5305-01-491-8511 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-491-8511 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 5305-01-491-8511 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-491-8511 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 5305-01-491-8511 was assigned to the Federal Catalog?

It was assigned 24 years ago, on Fri, Nov 2, 2001