5305-01-628-8785

Find complete technical information, availability, and procurement data for: 5305-01-628-8785
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-628-8785

Item Name Code

18257

Assigment Date

06/12/2014 (12 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

0.500 inches nominal thread length, hexagon head style, 2a thread class, 0.500 inches nominal fastener length, right-hand thread direction

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: 0.1094 inches nominal
Width Between Flats: 0.2756 inches nominal
End Item Identification: mrap - cougar
Nominal Thread Diameter: 0.112 inches
Thread Quantity Per Inch: 40
Part Name Assigned By Controlling Agency: machine screw
Material: steel corrosion resisting 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
0173050	Hexagon Head Cap Screw
AESJ0C112500SB7A31	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-628-8785?

The FSCG of the NSN 5305-01-628-8785 is 5305

Does the NSN 5305-01-628-8785 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-628-8785 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 5305-01-628-8785 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-628-8785 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 5305-01-628-8785 was assigned to the Federal Catalog?

It was assigned 12 years ago, on Thu, Jun 12, 2014