Model: ST4M157-4

Needle Roller Bearing

Properties:

Bore Diameter
Between 0.2496 inches and 0.2502 inches
Overall Outside Diameter
Between 0.7490 inches and 0.7500 inches
Lubrication Material
Grease
Outer Ring Width
Between 0.4950 inches and 0.5000 inches
Inner Ring Width
Between 0.5525 inches and 0.5675 inches
Surface Finish
Ground
Seal Quantity
2
Bearing Seal Type
Contact
Alignment Type
Rigid
Lubrication Material Specification
Mil-g-81322 military specification single material response
Material
Plastic seal
Material
Steel inner ring
Material
Steel outer ring
Material
Steel roller
Material
Steel washer
Surface Treatment
Chromium outer ring
Surface Treatment
Cadmium exposed surfaces as mounted
Style Designator
Cam roller, hardened and ground, non-separable
NSN
3110-00-493-9369
Part Number
ST4M157-4
Description
Bearing,roller,needle
CAGE
76301

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 ST4M157-4 NSN 3110-00-493-9369

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:
--
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:
ZZ
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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