5310-01-250-4646

Find complete technical information, availability, and procurement data for: 5310-01-250-4646
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-250-4646

Item Name Code

01857

Assigment Date

03/01/1987 (39 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.

2b thread class, 0.250 inches nominal width across flats, hexagon nut style, 0.500 inches nominal nut height, 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: 2b
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 0.500 inches nominal
Width Across Flats: 0.250 inches nominal
Thread Series: unc
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.138 inches
Bearing Surface Type: flat
Material: copper alloy 260 or copper alloy 262 or copper alloy 268 or copper alloy 270 or copper alloy 272 or copper alloy 274 or copper alloy 280 or copper alloy 331 or copper alloy 332 or copper alloy 335 or copper alloy 340 or copper alloy 342 overall
Material Document And Classification: qq-b-626,comp 11 fed spec all material responses overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty2,cl2 fed spec single treatment response overall
Specification/Standard Data: 80205-nas1786 professional/industrial association standard

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
NAS1786B06-8	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-250-4646?

The FSCG of the NSN 5310-01-250-4646 is 5310

Does the NSN 5310-01-250-4646 have a Schedule B code assigned?

Yes, the Schedule B code is 7415290000

Does NSN 5310-01-250-4646 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 5310-01-250-4646 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-250-4646 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 5310-01-250-4646 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sun, Mar 1, 1987