NAS537-7-25

View detailed technical data, stock status, and sourcing information for: NAS537-7-25
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-125-5923

Item Name Code

13206

Assigment Date

11/20/1968 (57 years ago)

A tubular shaped unthreaded item with or without a flange at one end designed to be inserted into a hole to reduce the inside diameter of the hole and to protect the surrounding body structure from damage resulting from stress, strain, and/or vibration. The overall length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body. Includes items which are divided into two or more segments which includes 180 degrees (3.141 radians) or less of the bearing periphery. For items made of rubber, see bushing, nonmetallic. See also bearing, sleeve; bushing, tapered; spacer, sleeve; insulator, bushing; and bushing, electrical conductor. Excludes:bushing, drill, jig.

chamfered inside left corner corner shape, 0.2450 inches minimum and 0.2500 inches maximum overall length, 0.5631 inches minimum and 0.5638 inches maximum body outside diameter, chamfered inside right corner corner shape, 0.4220 inches minimum and 0.4290 inches maximum body inside diameter

Product Characteristics

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

Overall Length: 0.2450 inches minimum and 0.2500 inches maximum
Body Outside Diameter: 0.5631 inches minimum and 0.5638 inches maximum
Body Inside Diameter: 0.4220 inches minimum and 0.4290 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
Surface Finish: 125.0 microinches left end surface of body
Surface Finish: 125.0 microinches right end surface of body
Surface Finish: 250.0 microinches inside diameter surface of body
Surface Finish: 63.0 microinches outside diameter surface of body
Material: steel comp 4130 or steel comp 8630 overall
Material Document And Classification: mil-s-6758 comp 4130 mil spec 1st material response or mil-s-6050 comp 8630 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
NAS537-7-025	Sleeve Bushing
NAS537-7-25	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-125-5923?

The FSCG of the NSN 3120-00-125-5923 is 3120

Does the NSN 3120-00-125-5923 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-125-5923 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 3120-00-125-5923 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-125-5923 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 3120-00-125-5923 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Wed, Nov 20, 1968