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66-21728-1 — PULLEY,GROOVE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

66-21728-1: PULLEY,GROOVE.

The PULLEY,GROOVE is a the manufacturer industrial component. Key specifications include bearings: NOT INCLUDED, material: IRON OVERALL, bore_type: STRAIGHT, face_width: 0.380 INCHES NOMINAL IN, bore_length: 0.380 INCHES NOMINAL IN, design_form: PLAIN. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-024-9953, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
66-21728-1
NSN: 3020-01-024-9953
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 17765 — THE BOEING COMPANY DIV COMMERCIAL (USA)
SPECIFICATIONS
bearingsNOT INCLUDED
materialIRON OVERALL
bore_typeSTRAIGHT
face_width0.380 INCHES NOMINAL IN
bore_length0.380 INCHES NOMINAL IN
design_formPLAIN
bore_featureINCLUDED
groove_depth0.185 INCHES NOMINAL IN
groove_shapeU
groove_width0.250 INCHES NOMINAL IN
bore_diameter0.190 INCHES NOMINAL IN
groove_radius0.120 INCHES NOMINAL IN
NSN3020-01-024-9953
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PULLEY,GROOVE TITLE COMPONENT PN 66-21728-1 MFR PULLEY,GROOVE
KEY FEATURES
•
INTEGRAL COOLING VANE: NOT INCLUDED
•
BORE FEATURE: INCLUDED
•
SPLIT HUB FEATURE: NOT INCLUDED
•
BORE LENGTH: 0.380 INCHES NOMINAL IN
•
DESIGN FORM: PLAIN
•
GROOVE RADIUS: 0.120 INCHES NOMINAL IN
•
GROOVE SHAPE: U
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INTEGRAL COOLING VANENOT INCLUDED
BORE FEATUREINCLUDED
SPLIT HUB FEATURENOT INCLUDED
BORE LENGTH0.380 INCHES NOMINAL IN
DESIGN FORMPLAIN
GROOVE RADIUS0.120 INCHES NOMINAL IN
GROOVE SHAPEU
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
GROOVE DEPTH0.185 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091 3020-00-001-0027 3020-00-001-0028 3020-00-001-0063 3020-00-001-0064 3020-00-001-0066 3020-00-001-0071 3020-00-001-0072
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 66-21728-1?
66-21728-1 is a PULLEY,GROOVE.
What is the NSN for 66-21728-1?
66-21728-1 is cataloged in the U.S. Government catalog under NSN 3020-01-024-9953. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.