Model: SM4-4B

Rod End Roller Bearing
Description:

3a thread class, right-hand , 0.2500 inches shank diameter, 651 externally threaded shank style, 1.9930 inches overall length, 0.2500 inches bore diameter.

Special Features:

0.0670 in. W by 0.0490 in. Deep by 0.6900 in. Lg keyway in shank, nas516-1 grease fitting, accepts nas513-4 lockwasher

Properties:

Thread Class
3a
Thread Direction
Right-hand
Shank Diameter
0.2500 inches
Shank Style
651 externally threaded
Shank Style
Externally threaded
Overall Length
1.9930 inches
Bore Diameter
0.2500 inches
Overall Outside Diameter
0.8000 inches
Lubrication Material
Grease
Shank Thread Length
0.8120 inches
Outer Ring Width
0.3500 inches
Inner Ring Width
0.5930 inches
Length From Bore Center To Shank End
1.6080 inches
Seal Quantity
2
Shield Quantity
2
Bearing Seal Type
Contact
Alignment Type
Self-aligning
Self-alignment Location
Internal
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Self-alignment Angle
10.00 degrees
Lubrication Material Specification
Mil-g-23827 military specification single material response
Material
Rubber butadiene-acrylonitrile class nbr seal
Material
Steel comp 430 shield
Material
Steel comp e52100 inner ring
Material
Steel comp e52100 roller
Material
Steel comp 4620 rod end body
Material
Steel snap ring
Material Specification
Mil-s-7420 military specification single material response inner ring
Material Specification
Mil-s-7420 military specification single material response roller
Material Specification
Mil-s-7493 military specification single material response rod end body
Material Specification
Qq-s-763 federal specification single material response shield
Surface Treatment
Cadmium all external/exposed metal surfaces
Surface Treatment Specification
Qq-p-416, type 1, cl 2 federal specification single treatment response all external/exposed metal surfaces
Style Designator
Single row, concave rollers
Thread Series Designator
Unjf
NSN
3110-00-053-9377
Part Number
SM4-4B
Description
Bearing,roller,rod End
CAGE
77896

A special single or multiple-row roller bearing, rigid or self-aligning, and constructed with either inside threaded, plain hollow, maile threaded, or solid shank.

Part SM4-4B NSN 3110-00-053-9377

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00050
FIIG:
A044A0
Concept No.:
App. Key:
G
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

Freight Classification

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

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Schedule B and Export
  • Schedule B: 8482500000
  • SITC: 74650
  • End Use: Industrial machines, other
  • NAICS: 332991
  • USDA: 1

Freight Class: Other cylindrical roller bearings

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