NAS537-4-770

View detailed technical data, stock status, and sourcing information for: NAS537-4-770
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-340-8654

Item Name Code

13206

Assigment Date

06/20/1991 (35 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).

chamfered inside left corner corner shape, 0.2380 inches minimum and 0.2430 inches maximum body inside diameter, 0.3756 inches minimum and 0.3761 inches maximum body outside diameter, chamfered inside right corner corner shape, 7.6950 inches minimum and 7.7000 inches maximum overall length

Product Characteristics

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

Overall Length: 7.6950 inches minimum and 7.7000 inches maximum
Body Outside Diameter: 0.3756 inches minimum and 0.3761 inches maximum
Body Inside Diameter: 0.2380 inches minimum and 0.2430 inches maximum
Corner Shape: chamfered inside left corner
Corner Shape: chamfered inside right corner
Corner Shape: square outside left corner
Corner Shape: square outside right corner
Material: steel comp 4130 or steel comp 8630 overall
Material Document And Classification: mil-s-6758 mil spec 1st material response or mil-s-6050 mil spec 2nd material response overall
Style Designator: solid, plain, no outside flanges
Specification/Standard Data: 80205-nas537 professional/industrial association standard

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
NAS537-4-770	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-01-340-8654?

The FSCG of the NSN 3120-01-340-8654 is 3120

Does the NSN 3120-01-340-8654 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-01-340-8654 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 3120-01-340-8654 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-340-8654 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 3120-01-340-8654 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Thu, Jun 20, 1991