5310-01-666-3300

Find complete technical information, availability, and procurement data for: 5310-01-666-3300
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-666-3300

Item Name Code

35871

Assigment Date

09/01/2017 (8 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.

right-hand thread direction, 2b thread class, floating nut style, 0.750 inches nominal distance from base to center of aperture, 0.050 inches minimum and 0.200 inches maximum panel thickness

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: floating
Distance From Base To Center Of Aperture: 0.750 inches nominal
Panel Thickness: 0.050 inches minimum and 0.200 inches maximum
End Item Identification: mrap - m-atv
Thread Series: unc
Thread Quantity Per Inch: 16
Nominal Thread Size: 0.375 inches
Part Name Assigned By Controlling Agency: nut, u, tab, st, mb
Material: steel overall
Surface Treatment: phosphate zinc 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
4129726	Clip-on Nut
4129726016	Clip-on Nut

FAQs

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

What is the FSCG of the NSN 5310-01-666-3300?

The FSCG of the NSN 5310-01-666-3300 is 5310

Does the NSN 5310-01-666-3300 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-666-3300 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 5310-01-666-3300 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-666-3300 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 5310-01-666-3300 was assigned to the Federal Catalog?

It was assigned 8 years ago, on Fri, Sep 1, 2017