Model: 640391

Transmission Synchronizer

Properties:

General Description
Oconsists of steel clutch hub, clutch sleeve, 3 inserts, 2 retaining 4ings and 2 brass blocking rings; 1.516 in. O/a lg; 3.356 in. Largest od; includes straight splined bore, 6 teeth, 1.356 in. Major dia, 1.156 in. Minor dia
NSN
2520-00-737-4999
Part Number
640391
Description
Synchronizer,transmission
CAGE
34623

A device used in manual automotive transmissions, designed to equalize the speed of the mating parts before they engage. Common types such as block type, disk and plate type, plain type or pin type use friction to synchronize the mating parts. The main function is to help in engaging gears by synchronizing the speeds of the gear and the shaft before the connection is made.

Part 640391 NSN 2520-00-737-4999

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
36254
FIIG:
A23900
Concept No.:
App. Key:
A
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:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
2.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
019940
UFC:
08170
LTL:
85.0
LCL:
--
WCC:
586
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8483909500
  • SITC: 74890
  • End Use: Industrial machines, other
  • NAICS: 333613
  • USDA: 1

Freight Class: Parts, nesoi, of bearing housings & plain shaft bearings, housed bearings, clutches, universal joints, flywheels and transmission shafts

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