PartsTable
Technical Data Sheet
Download PDF

BM77618 — GEAR,HELICAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

BM77618: GEAR,HELICAL.

The GEAR,HELICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, teeth_type: SINGLE HELIX, tooth_form: STANDARD, helix_angle: 76.0000 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-480-4351, 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
BM77618
NSN: 3020-00-480-4351
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
teeth_typeSINGLE HELIX
tooth_formSTANDARD
helix_angle76.0000 DEGREES
pitch_diameter4.5250 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity35
tooth_directionRIGHT
style_designatorHUBLESS
features_providedCASEHARDENED
NSN3020-00-480-4351
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,HELICAL TITLE COMPONENT PN BM77618 MFR GEAR,HELICAL
KEY FEATURES
•
FURNISHED ITEMS AND QUANTITY: 1 EXTERNALLY LUBRICATED BEARING
•
BORE NOMINAL DIAMETER: 0.9920 INCHES BOTH ENDS IN
•
HELIX ANGLE: 76.0000 DEGREES
•
TEETH QUANTITY: 35
•
BODY STYLE: PLAIN, SOLID
•
TOOTH DIRECTION: RIGHT
•
BORE STYLE: PLAIN BOTH ENDS
•
TEETH TYPE: SINGLE HELIX
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 EXTERNALLY LUBRICATED BEARING
BORE NOMINAL DIAMETER0.9920 INCHES BOTH ENDS IN
HELIX ANGLE76.0000 DEGREES
TEETH QUANTITY35
BODY STYLEPLAIN, SOLID
TOOTH DIRECTIONRIGHT
BORE STYLEPLAIN BOTH ENDS
TEETH TYPESINGLE HELIX
STYLE DESIGNATORHUBLESS
PITCH DIAMETER4.5250 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 1
AR51038Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy BM77618?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is BM77618?
BM77618 is a GEAR,HELICAL.
What parts can replace BM77618?
There is 1 known substitute for BM77618: AR51038. Substitute compatibility should be verified for your specific system.
What is the NSN for BM77618?
BM77618 is cataloged in the U.S. Government catalog under NSN 3020-00-480-4351. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — BM77618

✓ 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.