3170187

View detailed technical data, stock status, and sourcing information for: 3170187
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-141-3158

Item Name Code

15930

Assigment Date

01/01/1963 (63 years ago)

A washer which is round with a centrally located hole. One bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is recessed to form a curved or spherical contour. See also washer (1), convex. Excludes:washer (1), recessed and bearing, washer, thrust.

2.993 inches minimum and 2.996 inches maximum outside diameter, 0.312 inches nominal material thickness, 2.871 inches nominal recess diameter, 2.875 inches nominal radius, 2.000 inches nominal hole 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: 2.000 inches nominal
Radius: 2.875 inches nominal
Outside Diameter: 2.993 inches minimum and 2.996 inches maximum
Recess Diameter: 2.871 inches nominal
Material Thickness: 0.312 inches nominal
Material: aluminum alloy overall
Material Document And Classification: sae 304 assn std single material response overall
Style Designator: concave

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
3170187	Concave Washer
NAFB4639E	Concave Washer

FAQs

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

What is the FSCG of the NSN 5310-00-141-3158?

The FSCG of the NSN 5310-00-141-3158 is 5310

Does the NSN 5310-00-141-3158 have a Schedule B code assigned?

Yes, the Schedule B code is 7616108000

Does NSN 5310-00-141-3158 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 5310-00-141-3158 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-141-3158 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 5310-00-141-3158 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963