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GMD-221 — GEAR,SPUR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

GMD-221: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_style: W/ KEYWAY BOTH ENDS, pitch_diameter: 41.3000 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES, teeth_quantity: 124, face_nominal_width: 3.500 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-287-4137, 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
GMD-221
NSN: 3020-01-287-4137
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 70433 — APPLETON MARINE INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_styleW/ KEYWAY BOTH ENDS
pitch_diameter41.3000 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity124
face_nominal_width3.500 INCHES IN
keyway_nominal_width0.750 INCHES BOTH ENDS IN
bore_nominal_diameter5.750 INCHES BOTH ENDS IN
nominal_outside_diameter42.600 INCHES IN
NSN3020-01-287-4137
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,SPUR TITLE COMPONENT PN GMD-221 MFR GEAR,SPUR
KEY FEATURES
•
KEYWAY NOMINAL WIDTH: 0.750 INCHES BOTH ENDS IN
•
BORE NOMINAL DIAMETER: 5.750 INCHES BOTH ENDS IN
•
TEETH QUANTITY: 124
•
BORE STYLE: W/ KEYWAY BOTH ENDS
•
PITCH DIAMETER: 41.3000 INCHES NOMINAL IN
•
NOMINAL OUTSIDE DIAMETER: 42.600 INCHES IN
•
PRESSURE ANGLE: 20.0000 DEGREES
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
KEYWAY NOMINAL WIDTH0.750 INCHES BOTH ENDS IN
BORE NOMINAL DIAMETER5.750 INCHES BOTH ENDS IN
TEETH QUANTITY124
BORE STYLEW/ KEYWAY BOTH ENDS
PITCH DIAMETER41.3000 INCHES NOMINAL IN
NOMINAL OUTSIDE DIAMETER42.600 INCHES IN
PRESSURE ANGLE20.0000 DEGREES
MATERIALSTEEL OVERALL
FACE NOMINAL WIDTH3.500 INCHES 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 GMD-221?
GMD-221 is a GEAR,SPUR.
What is the NSN for GMD-221?
GMD-221 is cataloged in the U.S. Government catalog under NSN 3020-01-287-4137. 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.