Model: 17921C

Groove Pulley

Special Features:

Two 5/32 deep by 1/4 in. Radius grooves, one located 22-1/2 in. Degrees left angle from key, 2nd one 180 degrees from 1st one on bb end of hub

Properties:

Groove Depth
0.750 inches
Groove Width
0.875 inches
Outside Diameter
7.500 inches
Keyway Width
Between 0.251 inches and 0.253 inches
Thread Size
3/8-16
Bore Length
1.500 inches
Distance From Center Of Bore To Bottom Of Keyway
Between 0.599 inches and 0.636 inches
Groove Radius
0.125 inches
Securing Hole Quantity
2
Taper Bore Major Diameter
Between 1.000 inches and 1.001 inches
Taper Bore Minor Diameter
0.937 inches
Material And Location
Steel rim and iron hub
Face Width
2.187 inches
Design Form
Webbed
Bore Type
Tapered
Bearings
Not included
Taper Major Diameter Location
Aa end
Groove Quantity
2
Counterbore Feature
Not included
Hole Location
One located 22-1/2 degrees right angle from keyway, 2nd one 180 degrees from 1st one
Keying Facility
Included
Keying Facility Type
Keyway
Securing Method
Threaded hole
Split Hub Feature
Not included
Web/spoke Relationship To Face Centerline
Offset
Lightening Hole
Not included
Integral Cooling Vane
Not included
Groove Shape
U
Bore Feature
Included
Keying Facility Largest Dimension Location
Aa end
Securing Location
Bb end
Hub End Outside Diameter And Location
1.625 inches aa end and 1.630 inches aa end and 1.750 inches bb end
Distance From Outside Flange/rim To Hub End And Location
1.000 inches aa end and 0.343 inches bb end
Quantity
1
Style Designator
Webbed or spoked
NSN
3020-00-287-5707
Part Number
17921C
Description
Pulley,groove
CAGE
1ML14

A pulley with one or more grooved faces or rims of the same diameter. For pulleys encased in a shell or frame, see block, tackle. for items specifically designed for aviation, see pulley(1), groove, aviation.

Part 17921C NSN 3020-00-287-5707

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
08109
FIIG:
T353-A
Concept No.:
1
App. Key:
AA
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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127300
UFC:
64560
LTL:
60.0
LCL:
60.0
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8487900080
  • SITC: 74999
  • End Use: Industrial machines, other
  • NAICS: 333999
  • USDA: 1

Freight Class: Machinery parts not containing electrical features, and not specified or included elsewhere in chapter 84, except ships' propellers

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