A1-4957

Comprehensive specifications and application details for: A1-4957 Sleeve Bushing.

Summary

Explore detailed summary information for bearing: A1-4957. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
A1-4957
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-00-985-4791
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.

0.4720 inches minimum and 0.4727 inches maximum body outside diameter, square outside left corner corner shape, 0.3543 inches minimum and 0.3547 inches maximum body inside diameter, square left flange body corner corner shape, square left flange outside right corner corner shape

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-985-4791 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter
0.3543 inches minimum and 0.3547 inches maximum
Body Outside Diameter
0.4720 inches minimum and 0.4727 inches maximum
Corner Shape
square left flange body corner
Corner Shape
square left flange outside right corner
Corner Shape
square outside left corner
Corner Shape
square inside left corner
Corner Shape
square inside right corner
Corner Shape
square outside right corner
Flange Outside Diameter
0.5469 inches minimum and 0.5512 inches maximum
Flange Width
0.0550 inches minimum and 0.0630 inches maximum
Overall Length
0.2520 inches minimum and 0.2600 inches maximum
Material Document And Classification
sae e4340 assn std single material response overall
Material
steel comp e4340 overall
Style Designator
segmented, external flange one end
Surface Finish
125.0 microinches intermediate layer

Frequently Asked Questions

Find quick answers to common questions about bearing: A1-4957. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-985-4791?
The FSCG of the NSN 3120-00-985-4791 is 3120
Does the NSN 3120-00-985-4791 have a Schedule B code assigned?
Yes, the Schedule B code is 8482997060
Does NSN 3120-00-985-4791 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 3120-00-985-4791 contain precious materials?
Precious metal content is unknown
Does NSN 3120-00-985-4791 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 3120-00-985-4791 was assigned to the Federal Catalog?
It was assigned 62 years ago, on Tue, Jan 1, 1963

Price & Availability

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