21-025-18

Comprehensive specifications and application details for: 21-025-18 Sleeve Bushing.

Summary

Explore detailed summary information for bearing: 21-025-18. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
21-025-18
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-01-051-3297
Item Name Code
13206
Federal Item Identification Guide
A045A0
Assigment Date
11/27/1977

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.

0.2497 inches minimum and 0.2502 inches maximum body inside diameter, chamfered inside left corner corner shape, 0.3740 inches minimum and 0.3745 inches maximum body outside diameter, chamfered inside right corner corner shape, square outside left corner corner shape

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-01-051-3297 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter
0.2497 inches minimum and 0.2502 inches maximum
Body Outside Diameter
0.3740 inches minimum and 0.3745 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
Overall Length
0.2782 inches minimum and 0.2842 inches maximum
Material
steel comp 4140 or steel comp 4130 or steel comp 8630 or steel comp 8740 overall
Style Designator
solid, plain, no outside flanges
Surface Treatment Document And Classification
qq-p-416,ty 2,cl 2 fed spec single treatment response overall
Surface Treatment
cadmium and chromate overall

Frequently Asked Questions

Find quick answers to common questions about bearing: 21-025-18. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-01-051-3297?
The FSCG of the NSN 3120-01-051-3297 is 3120
Does the NSN 3120-01-051-3297 have a Schedule B code assigned?
Yes, the Schedule B code is 8482997060
Does NSN 3120-01-051-3297 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 3120-01-051-3297 contain precious materials?
Item does not contain precious metal.
Does NSN 3120-01-051-3297 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 3120-01-051-3297 was assigned to the Federal Catalog?
It was assigned 47 years ago, on Sun, Nov 27, 1977

Price & Availability

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