5305-01-413-8540

Find complete technical information, availability, and procurement data for: 5305-01-413-8540
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-413-8540

Item Name Code

18257

Assigment Date

05/24/1995 (31 years ago)

A circular or moderately noncircular shaped item with an aperture. It is constructed of spring-like metal strips, preformed into a vee shape, laminated with a soft filler. It is designed to seal between two nondeforming surfaces. It may have an inner and/or outer, solid or spiral wound compression ring(s).

0.500 inches nominal fastener length, right-hand thread direction, 2a thread class, 0.500 inches nominal thread 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: 0.500 inches nominal
Fastener Length: 0.500 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
Hole Diameter: 0.0605 inches minimum and 0.0685 inches maximum
Nominal Thread Diameter: 0.250 inches
Hole Quantity: 1
Hole Type: drilled
Thread Quantity Per Inch: 20
Material: steel uns k04100 overall
Material Document And Classification: astm a354 assn std single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416, ty2 cl3 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
B1821AH025C050D	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-413-8540?

The FSCG of the NSN 5305-01-413-8540 is 5305

Does the NSN 5305-01-413-8540 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-413-8540 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 5305-01-413-8540 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-413-8540 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 5305-01-413-8540 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Wed, May 24, 1995