Model: 21A744-8

Sleeve Bearing

Properties:

Overall Length
2.5000 inches
Body Outside Diameter
Between 3.3780 inches and 3.3800 inches
Body Inside Diameter
Between 2.8740 inches and 2.8760 inches
Lubrication Material
Lubricating oil
Corner Shape
Square all corners
Surface Finish
125.0 microinches
Material
Copper alloy
Material Specification
Mil-b-5687, type 1, comp a or b military specification single material response
Style Designator
17c solid, plain, no outside flanges
Style Designator
Solid, plain, no outside flanges
NSN
3120-00-431-2131
Part Number
21A744-8
Description
Bearing,sleeve
CAGE
45320

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 21A744-8 NSN 3120-00-431-2131

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:
114870
UFC:
58890
LTL:
77.5
LCL:
RATING VARIABLE
WCC:
742
TCC:
Z
SHC:
9
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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