5310-01-437-3257

Find complete technical information, availability, and procurement data for: 5310-01-437-3257
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-437-3257

Item Name Code

14218

Assigment Date

10/10/1996 (29 years ago)

A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes:items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).

0.380 inches minimum and 0.390 inches maximum hole diameter, 0.553 inches maximum outside diameter, manuf. states that submitted p/n is a 3/8 inche lock washer according to ansi b18.21.1. special features, steel overall material, 0.125 inches minimum 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: 0.380 inches minimum and 0.390 inches maximum
Outside Diameter: 0.553 inches maximum
Material Thickness: 0.125 inches minimum
Special Features: manuf. states that submitted p/n is a 3/8 inche lock washer according to ansi b18.21.1.
Material: steel overall
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: qq-z-325, ty2 cl2 fed spec single treatment response overall
Style Designator: split helical-right hand

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
9-45-1332	Lock Washer
9-45-133200	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-01-437-3257?

The FSCG of the NSN 5310-01-437-3257 is 5310

Does the NSN 5310-01-437-3257 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-01-437-3257 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 5310-01-437-3257 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-437-3257 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 5310-01-437-3257 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Thu, Oct 10, 1996