Model: MS21438-104

Needle Roller Bearing

Special Features:

Plating on exposed surfaces as mounted; optional oil groove in id of outer ring

Properties:

Bore Diameter
Between 0.2493 inches and 0.2500 inches
Overall Outside Diameter
Between 0.8740 inches and 0.8760 inches
Lubrication Material
Grease
Outer Ring Width
Between 0.3300 inches and 0.3450 inches
Inner Ring Width
Between 0.3650 inches and 0.3750 inches
Crown Radius
10.0000 inches
Surface Finish
Ground
Seal Quantity
2
Bearing Seal Type
Contact
Alignment Type
Rigid
Features Provided
Lubrication hole and lubrication groove
Lubrication Material Specification
Mil-g-81322 military specification single material response
Material
Plastic acetal seal or plastic polyhexamethylene adipamide seal
Material
Steel comp e50100 inner ring or steel comp e51100 inner ring or steel comp e52100 inner ring
Material
Steel comp e50100 outer ring or steel comp e51100 outer ring or steel comp e52100 outer ring
Material
Steel comp e50100 retaining plate or steel comp e51100 retaining plate or steel comp e52100 retaining plate
Material
Steel comp e50100 roller or steel comp e51100 roller or steel comp e52100 roller
Material Specification
66 federal standard all material responses outer ring or aisi assn standard all material responses outer ring or sae assn standard all material responses outer ring
Material Specification
66 federal standard all material responses inner ring or aisi assn standard all material responses inner ring or sae assn standard all material responses inner ring
Material Specification
66 federal standard all material responses roller or aisi assn standard all material responses roller or sae assn standard all material responses roller
Material Specification
66 federal standard all material responses retaining plate or aisi assn standard all material responses retaining plate or sae assn standard all material responses retaining plate
Material Specification
L-p-392 federal specification 1st material response seal or l-p-410 federal specification 2nd material response seal
Surface Treatment
Chromium outer ring
Surface Treatment
Cadmium inner ring or oxide inner ring
Surface Treatment
Cadmium retaining plate or oxide retaining plate
Surface Treatment Specification
Qq-c-320, class 2 federal specification single treatment response outer ring
Surface Treatment Specification
Qq-p-416, type 1, class 2 federal specification 1st treatment response inner ring or mil-c-13924 military specification 2nd treatment response inner ring
Surface Treatment Specification
Qq-p-416, type 1, class 2 federal specification 1st treatment response retaining plate or mil-c-13924 military specification 2nd treatment response retaining plate
Style Designator
Track roller
Specification Data
96906-ms21438 government standard
NSN
3110-01-208-5389
Part Number
MS21438-104
Description
Bearing,roller,needle
CAGE
81343

A single or multiple-row antifriction bearing used with or without inner or outer races characterized by relatively small size rollers usually not ranging above 0.250 inch (6.35mm) diameter and generally longer in length in relation to diameter.

Part MS21438-104 NSN 3110-01-208-5389

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00051
FIIG:
A044A0
Concept No.:
App. Key:
M
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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
1.8 X 1.8 X 1.5
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
51
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
114820
UFC:
58860
LTL:
77.5
LCL:
--
WCC:
742
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8482400000
  • SITC: 74640
  • End Use: Industrial machines, other
  • NAICS: 332991
  • USDA: 1

Freight Class: Needle roller bearings

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