Model: 20638

Brake Drum

Properties:

Overall Width
3.004 inches
Countersunk Hole Angle In Deg
82.0
Mounting Hole Diameter
Between 0.625 inches and 0.630 inches
Mounting Hole Quantity
5
Overall Outside Diameter
10.375 inches
Center Hole Diameter
Between 4.157 inches and 4.160 inches
End Application
Grumman aircraft, model a10
Alignment Hole Quantity
3
Mounting Hole Spacing
Equally spaced on 5.496 in. Min, 5.504 in. Max bolt circle
Braking Surface Location
Internal
Braking Surface Diameter
Between 8.995 inches and 9.000 inches
Braking Surface Width
2.047 inches
Hole Size
0.328 in. Min, 0.385 in. Max dia
Hole Spacing
Spaced between mtg holes on 5.496 in. Min., 5.504 in. Max diameter bolt circle, 2 holes spaced 72 degrees apart, 144 degrees eac from 3rd hole
Cooling Fin
Not included
Adjustment Hole
Not included
Inspection Hole
Included
Oil Drain Hole
Not included
Balancing Pad
Not included
NSN
2530-00-352-6962
Part Number
20638
Description
Brake Drum
CAGE
64986

A circular shaped metal item designed to be connected to a machine or vehicle shaft or wheel and used to retard, stop or prevent motion by the application of pressure exerted by brake(s) or band(s).

Part 20638 NSN 2530-00-352-6962

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
11298
FIIG:
T129-E
Concept No.:
App. Key:
EA
Cond. Code:
2
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:
8.4000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
018380
UFC:
08460
LTL:
60.0
LCL:
--
WCC:
581
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8708300050
  • SITC: 78433
  • End Use: Other parts and accessories of vehicles
  • NAICS: 336340
  • USDA: 1

Freight Class: Brakes and servo-brakes and parts, of motor vehicles of headings 8701 to 8705

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