242-639-003

Spur Antibacklash Gear

NSN 3020-00-179-3938

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
001793938

Technical Specifications of NSN

Pitch Diameter:
1.0000 inches
Teeth Quantity:
96
Bore Style:
Plain both ends
Outside Diameter:
1.021 inches
Tooth Form:
Standard
Pressure Angle:
20.0000 degrees
Distance Between Body Face And Protruding Hub End:
0.188 inches first end
Face Width:
0.125 inches
Bore Diameter:
0.125 inches both ends
Hub Style Designator:
Pinned first end
Hub Diameter:
0.375 inches first end
Precision Classification:
Quality number 10
Material:
Aluminum alloy first gear
Material:
Aluminum alloy second gear
Material:
Steel comp 303 hub
Material:
Stainless steel retaining ring
Material:
Steel spring
Material Specification:
Qq-a-250/4 t3 or t4 federal specification 3rd material response second gear
Material Specification:
Qq-a-250/4 t3 or t4 federal specification 1st material response first gear
Material Specification:
Qq-s-763 federal specification 2nd material response hub
Surface Treatment:
Anodize first gear
Surface Treatment:
Anodize second gear
Surface Treatment:
Passivate hub
Surface Treatment:
Passivate retaining ring
Surface Treatment Specification:
Mil-a-8625 military specification 1st treatment response first gear
Surface Treatment Specification:
Mil-a-8625 military specification 3rd treatment response second gear
Surface Treatment Specification:
Mil-f-14072, finish e300 military specification 2nd treatment response hub
Style Designator:
Protruding hub
Furnished Items And Quantity:
1 setscrew
NSN:
3020-00-179-3938
Item Name:
Gear,antibacklash,spur
Cage Code:
01351

Other Related Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
242-639-0003
Cage Code:
95542
RNCC:
5
RNVC:
9
RNAAC:
AX
Status:
A
MSDS:
SADC:

Part Identification

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26668
FIIG:
A27300
Concept No.:
App. Key:
AC
Cond. Code:
1
Status:
A

Part Materials

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:
133300
UFC:
63220
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Pricing & Availability

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Privacy | Terms

Definition Definition of approved item name (AIN): "Spur Antibacklash Gear"

An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

MOE Major Organizational Entities

Entity
DSOR
User:
DEPARTMENT OF THE NAVY Dept. of the Navy
DSOR:
Import / Export
  • Schedule B: 8483409000
  • SITC: 74840
  • End Use: Industrial machines, other
  • NAICS: 333612
  • USDA: 1

Classification: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately


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