4B21MS5-018

Comprehensive specifications and application details for: 4B21MS5-018 Sleeve Bushing.

Summary

Explore detailed summary information for bearing: 4B21MS5-018. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
4B21MS5-018
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-00-662-0421
Item Name Code
13206
Federal Item Identification Guide
A045A0
Assigment Date
01/01/1963

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.

steel comp 4130 and steel comp 4135 overall material, square all corners corner shape, 0.5575 inches minimum and 0.5625 inches maximum overall length, 0.3120 inches minimum and 0.3130 inches maximum body inside diameter, 0.4355 inches minimum and 0.4360 inches maximum body outside diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-662-0421 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter
0.3120 inches minimum and 0.3130 inches maximum
Body Outside Diameter
0.4355 inches minimum and 0.4360 inches maximum
Corner Shape
square all corners
Overall Length
0.5575 inches minimum and 0.5625 inches maximum
Material
steel comp 4130 and steel comp 4135 overall
Specification/Standard Data
43999-ld137-0018 manufacturers source control
Style Designator
solid, plain, no outside flanges
Surface Finish
125.0 microinches left end surface of body
Surface Finish
125.0 microinches right end surface of body
Surface Finish
16.0 microinches outside diameter surface of body
Surface Finish
250.0 microinches inside diameter surface of body
Surface Treatment Document And Classification
qq-c-320,cl 2 fed spec single treatment response outside diameter surface of body
Surface Treatment
chromium outside diameter surface of body
Test Data Document
"81349-mil-i-6868 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."

Frequently Asked Questions

Find quick answers to common questions about bearing: 4B21MS5-018. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-662-0421?
The FSCG of the NSN 3120-00-662-0421 is 3120
Does the NSN 3120-00-662-0421 have a Schedule B code assigned?
Yes, the Schedule B code is 8482997060
Does NSN 3120-00-662-0421 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 3120-00-662-0421 contain precious materials?
Precious metal content is unknown
Does NSN 3120-00-662-0421 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 3120-00-662-0421 was assigned to the Federal Catalog?
It was assigned 62 years ago, on Tue, Jan 1, 1963

Price & Availability

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