3120-00-863-1178

Find complete technical information, availability, and procurement data for: 3120-00-863-1178
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 3120-00-863-1178 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-863-1178

Item Name Code

13211

Assigment Date

01/01/1962 (64 years ago)

An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes:straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.

4.0110 inches minimum and 4.0130 inches maximum counterbore diameter, 4.2600 inches nominal outside diameter, counterbored cross-sectional shape style, round center hole shape style, 0.1400 inches nominal counterbore depth

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: counterbored
Counterbore Diameter: 4.0110 inches minimum and 4.0130 inches maximum
Counterbore Depth: 0.1400 inches nominal
Outside Diameter: 4.2600 inches nominal
Center Hole Shape Style: round
Diameter: 3.2580 inches minimum and 3.2600 inches maximum
Overall Thickness: 0.2300 inches nominal
Corner Shape: square all corners
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
Material: steel overall
Material Document And Classification: ams 6322 assn std single material response overall
Precious Material: silver
Surface Condition: ground
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
117547Y74	Thrust Washer Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-863-1178?

The FSCG of the NSN 3120-00-863-1178 is 3120

Does the NSN 3120-00-863-1178 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105008

Does NSN 3120-00-863-1178 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 3120-00-863-1178 contain precious materials?

Item contains silver.

Does NSN 3120-00-863-1178 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 3120-00-863-1178 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962