25535-6

View detailed technical data, stock status, and sourcing information for: 25535-6
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-293-6655

Item Name Code

21824

Assigment Date

02/03/1989 (37 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.

0.310 inches nominal width across flats, 0.110 inches nominal nut height, right-hand thread direction, external tooth nut style, 2b 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: 2b
Thread Direction: right-hand
Nut Style: external tooth
Nut Height: 0.110 inches nominal
Width Across Flats: 0.310 inches nominal
Thread Series: unc
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.138 inches
Material: steel comp 1020 nut
Material: steel comp 1050 or steel comp 1053 or steel comp 1055 or steel comp 1059 or steel comp 1060 or steel comp 1064 washer
Material Document And Classification: aisi assn std all material responses washer
Material Document And Classification: sae assn std single material response nut
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: astm b633,type 2 assn std single treatment response overall

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
23287-002	Assembled Washer Plain Nut
25535-6	Assembled Washer Plain Nut
501-060800-00	Assembled Washer Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-293-6655?

The FSCG of the NSN 5310-01-293-6655 is 5310

Does the NSN 5310-01-293-6655 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-293-6655 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 5310-01-293-6655 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-293-6655 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 5310-01-293-6655 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Fri, Feb 3, 1989