5310-01-396-4240

Find complete technical information, availability, and procurement data for: 5310-01-396-4240
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-396-4240

Item Name Code

15938

Assigment Date

07/31/1987 (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.

0.018 inches minimum and 0.024 inches maximum overall height, 0.134 inches minimum and 0.139 inches maximum hole diameter, 0.265 inches minimum and 0.270 inches maximum outside diameter, 350.0 vickers or firth diamond pyramid minimum and 380.0 vickers or firth diamond pyramid maximum hardness rating, 0.0054 inches minimum and 0.0066 inches maximum material thickness

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter: 0.134 inches minimum and 0.139 inches maximum
Outside Diameter: 0.265 inches minimum and 0.270 inches maximum
Overall Height: 0.018 inches minimum and 0.024 inches maximum
Material Thickness: 0.0054 inches minimum and 0.0066 inches maximum
Hardness Rating: 350.0 vickers or firth diamond pyramid minimum and 380.0 vickers or firth diamond pyramid maximum
Material: copper alloy 172 overall
Material Document And Classification: astm b194,1/4 hard assn std single material response overall
Style Designator: spring tension

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
M12133/3-134	Spring Tension Washer

FAQs

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

What is the FSCG of the NSN 5310-01-396-4240?

The FSCG of the NSN 5310-01-396-4240 is 5310

Does the NSN 5310-01-396-4240 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-01-396-4240 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 5310-01-396-4240 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-396-4240 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 5310-01-396-4240 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Jul 31, 1987