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S378-3L — PULLEY,GROOVE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

S378-3L: PULLEY,GROOVE.

The PULLEY,GROOVE is a the manufacturer industrial component. Key specifications include bearings: INCLUDED, material: PLASTIC PHENOLIC BODY, bore_type: STRAIGHT, face_width: 0.422 INCHES NOMINAL IN, bore_length: 0.484 INCHES NOMINAL IN, design_form: WEBBED. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-993-4091, 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
S378-3L
NSN: 3020-00-993-4091
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 7EK50 — TEXTRON AVIATION INC (USA)
SPECIFICATIONS
bearingsINCLUDED
materialPLASTIC PHENOLIC BODY
bore_typeSTRAIGHT
face_width0.422 INCHES NOMINAL IN
bore_length0.484 INCHES NOMINAL IN
design_formWEBBED
bearing_typeBALL
bore_featureINCLUDED
groove_depth0.250 INCHES NOMINAL IN
groove_shapeU
groove_width0.281 INCHES NOMINAL IN
bore_diameter0.250 INCHES NOMINAL IN
NSN3020-00-993-4091
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PULLEY,GROOVE TITLE COMPONENT PN S378-3L MFR PULLEY,GROOVE
KEY FEATURES
•
INTEGRAL COOLING VANE: NOT INCLUDED
•
HUB OUTSIDE DIAMETER: 0.719 INCHES NOMINAL BOTH ENDS IN
•
BORE FEATURE: INCLUDED
•
BEARING QUANTITY: 1
•
SPLIT HUB FEATURE: NOT INCLUDED
•
BORE LENGTH: 0.484 INCHES NOMINAL IN
•
DESIGN FORM: WEBBED
•
WEB/SPOKE RELATIONSHIP TO FACE CENTERLINE: NOT OFFSET
TECHNICAL CHARACTERISTICS
INTEGRAL COOLING VANENOT INCLUDED
HUB OUTSIDE DIAMETER0.719 INCHES NOMINAL BOTH ENDS IN
BORE FEATUREINCLUDED
BEARING QUANTITY1
SPLIT HUB FEATURENOT INCLUDED
BORE LENGTH0.484 INCHES NOMINAL IN
DESIGN FORMWEBBED
WEB/SPOKE RELATIONSHIP TO FACE CENTERLINENOT OFFSET
GROOVE RADIUS0.109 INCHES NOMINAL IN
GROOVE SHAPEU
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S378-3L?
S378-3L is a PULLEY,GROOVE.
What is the NSN for S378-3L?
S378-3L is cataloged in the U.S. Government catalog under NSN 3020-00-993-4091. 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.