5310-01-031-5018

Find complete technical information, availability, and procurement data for: 5310-01-031-5018
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-031-5018

Item Name Code

13393

Assigment Date

11/24/1976 (49 years ago)

A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

rectangular cross-sectional shape style, 0.318 inches minimum and 0.328 inches maximum hole diameter, square peripheral shape style, 0.008 inches minimum and 0.012 inches maximum thickness, round w/flats center hole shape style

Product Characteristics

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

Cross-Sectional Shape Style: rectangular
Hole Diameter: 0.318 inches minimum and 0.328 inches maximum
Peripheral Shape Style: square
Center Hole Shape Style: round w/flats
Thickness: 0.008 inches minimum and 0.012 inches maximum
Width Across Flats: 0.610 inches minimum and 0.630 inches maximum
Hole Width Across Flats: 0.265 inches minimum and 0.270 inches maximum

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
117998	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-01-031-5018?

The FSCG of the NSN 5310-01-031-5018 is 5310

Does NSN 5310-01-031-5018 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 5310-01-031-5018 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-031-5018 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 5310-01-031-5018 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Wed, Nov 24, 1976