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GD139BS1 — GEAR AND WEIGHT ASSEMBLY,GOVERNO

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

GD139BS1: GEAR AND WEIGHT ASSEMBLY,GOVERNO.

GEAR AND WEIGHT ASSEMBLY,GOVERNO. This part is cataloged in the U.S. Government catalog under NSN 2990-00-481-2725, 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
GD139BS1
NSN: 2990-00-481-2725
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
CAGE: 66289 — WISCONSIN MOTORS, LLC (USA)
SPECIFICATIONS
Part NumberGD139BS1
NSN2990-00-481-2725
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR AND WEIGHT ASSEMBLY,GOVERNO TITLE COMPONENT PN GD139BS1 MFR GEAR AND WEIGHT ASSEMB
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATERIAL,STEEL OVERALL,CONSISTS OF,ONE @HELICAL GEAR ASSEMBLY,27 TEETH,TWO FLYWEIGHTS ATTACHED,WITH PINS BELOW GEAR ASSEMBLY,GEAR INSIDE DIA-0.344 IN.,GEAR OUTSIDE DIA-1.938 IN.,GEAR HEIGHT-0.625 IN.,OVERALL HEIGHT INCLUDING HOLDERS-1.375 IN. IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATERIAL,STEEL OVERALL,CONSISTS OF,ONE @HELICAL GEAR ASSEMBLY,27 TEETH,TWO FLYWEIGHTS ATTACHED,WITH PINS BELOW GEAR ASSEMBLY,GEAR INSIDE DIA-0.344 IN.,GEAR OUTSIDE DIA-1.938 IN.,GEAR HEIGHT-0.625 IN.,OVERALL HEIGHT INCLUDING HOLDERS-1.375 IN. IN
OTHER ITEMS IN FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2990-00-001-0001 2990-00-001-1248 2990-00-001-1250 2990-00-001-2055 2990-00-001-3498 2990-00-001-3520 2990-00-001-3521 2990-00-001-3522
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 GD139BS1?
GD139BS1 is a GEAR AND WEIGHT ASSEMBLY,GOVERNO.
What is the NSN for GD139BS1?
GD139BS1 is cataloged in the U.S. Government catalog under NSN 2990-00-481-2725. 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.