21-135

View detailed technical data, stock status, and sourcing information for: 21-135
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-01-178-6115

Item Name Code

22293

Assigment Date

05/08/1984 (42 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.

2.375 inches nominal length, 1.375 inches nominal aperture diameter, 1.8750 inches nominal width, 0.190 inches nominal mounting hole diameter, flat w/aperture cross-sectional 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: flat w/aperture
Width: 1.8750 inches nominal
Length: 2.375 inches nominal
Mounting Hole Diameter: 0.190 inches nominal
Aperture Diameter: 1.375 inches nominal
Mounting Hole Arrangement Style: single bolt hole circle
Bolt Circle Hole Quantity: 2
Overall Thickness: 0.1196 inches nominal
Mounting Bolt Circle Diameter: 2.000 inches nominal
Mounting Hole Type: round, unthreaded
Material: steel overall
Surface Treatment: zinc overall
Style Designator: round

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
21-135	Bearing Retaining Plate

FAQs

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

What is the FSCG of the NSN 3110-01-178-6115?

The FSCG of the NSN 3110-01-178-6115 is 3110

Does the NSN 3110-01-178-6115 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997090

Does NSN 3110-01-178-6115 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 3110-01-178-6115 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-01-178-6115 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 3110-01-178-6115 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Tue, May 8, 1984