H4-020 Sleeve Bushing

Comprehensive specifications and application details for: H4-020 Sleeve Bushing.

Summary

Explore detailed summary information for bearing: H4-020. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: H4-020
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-01-042-8908
Item Name Code: 13206
Federal Item Identification Guide: A045A0
Assigment Date: 06/17/1977

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.

0.3115 inches minimum and 0.3120 inches maximum body outside diameter, 0.2500 inches minimum and 0.2515 inches maximum body inside diameter, 0.1950 inches minimum and 0.2000 inches maximum overall length, steel comp 630 or steel comp 321 overall material, square all corners corner shape

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-01-042-8908 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter: 0.2500 inches minimum and 0.2515 inches maximum
Body Outside Diameter: 0.3115 inches minimum and 0.3120 inches maximum
Corner Shape: square all corners
Overall Length: 0.1950 inches minimum and 0.2000 inches maximum
Material: steel comp 630 or steel comp 321 overall
Style Designator: solid, plain, no outside flanges
Surface Finish: 125.0 microinches inner member
Surface Finish: 125.0 microinches left end surface of body
Surface Finish: 125.0 microinches right end surface of body
Surface Finish: 8.0 microinches outside diameter surface of body
Surface Treatment Document And Classification: qq-c-320 fed spec single treatment response outside diameter surface of body
Surface Treatment: chromium outside diameter surface of body

Frequently Asked Questions

Find quick answers to common questions about bearing: H4-020. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-01-042-8908?: The FSCG of the NSN 3120-01-042-8908 is 3120

Does the NSN 3120-01-042-8908 have a Schedule B code assigned?: Yes, the Schedule B code is 8482997060

Does NSN 3120-01-042-8908 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 3120-01-042-8908 contain precious materials?: Precious metal content is unknown

Does NSN 3120-01-042-8908 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.