5310-01-288-1255

Find complete technical information, availability, and procurement data for: 5310-01-288-1255
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-288-1255

Item Name Code

15933

Assigment Date

11/03/1988 (37 years ago)

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes:washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

0.441 inches minimum and 0.461 inches maximum outside diameter, 0.192 inches minimum and 0.198 inches maximum hole diameter, 24.0 rockwell c minimum and 37.0 rockwell c maximum hardness rating, 0.064 inches minimum and 0.080 inches maximum material thickness, 0.271 inches minimum and 0.281 inches maximum recess diameter

Product Characteristics

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

Hole Diameter: 0.192 inches minimum and 0.198 inches maximum
Outside Diameter: 0.441 inches minimum and 0.461 inches maximum
Recess Diameter: 0.271 inches minimum and 0.281 inches maximum
Material Thickness: 0.064 inches minimum and 0.080 inches maximum
Hardness Rating: 24.0 rockwell c minimum and 37.0 rockwell c maximum
Recess Angle: 90.0 degrees nominal
Material: iron alloy 660 overall
Material Document And Classification: ams 5525 assn std single material response or ams 5735 assn std single material response overall
Style Designator: recessed

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
88-50001-001	Recessed Washer
AS21-3	Recessed Washer

FAQs

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

What is the FSCG of the NSN 5310-01-288-1255?

The FSCG of the NSN 5310-01-288-1255 is 5310

Does the NSN 5310-01-288-1255 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-288-1255 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 5310-01-288-1255 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-288-1255 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 5310-01-288-1255 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Thu, Nov 3, 1988