Model: 4B21S8-013

Sleeve Bearing

Properties:

Overall Length
Between 0.4012 inches and 0.4062 inches
Body Outside Diameter
Between 0.6225 inches and 0.6230 inches
Body Inside Diameter
Between 0.4995 inches and 0.5005 inches
Corner Shape
Square all corners
Hardness Rating
27.0 rockwell c and 33.0 rockwell c
Surface Finish
125.0 microinches outside diameter surface of body
Surface Finish
250.0 microinches inside diameter surface of body
Material
Steel comp 4130
Material Specification
Mil-s-6758, cond f military specification single material response
Surface Treatment
Chromium outside diameter surface of body
Style Designator
17c solid, plain, no outside flanges
Style Designator
Solid, plain, no outside flanges
NSN
3120-00-662-0706
Part Number
4B21S8-013
Description
Bearing,sleeve
CAGE
43999

A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. it must have a visible or detectable means of lubrication or be self-lubricated. the over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. see also bushing, sleeve; spacer, sleeve; and washer (as modified). excludes pin, hollow.

Part 4B21S8-013 NSN 3120-00-662-0706

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
13205
FIIG:
A045A0
Concept No.:
App. Key:
D
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
114850
UFC:
58880
LTL:
70.0
LCL:
RATING VARIABLE
WCC:
742
TCC:
Z
SHC:
5
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8482997090
  • SITC: 74699
  • End Use: Industrial machines, other
  • NAICS: 332991
  • USDA: 1

Freight Class: Parts, nesoi, for roller bearings or for combined ball/roller bearings, nesoi

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