PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2121727Gear,helical

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 3020-00-820-6148 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-820-6148 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-820-6148. Primary manufacturer part number: 2121727.
Features
  • Gear,helical — FSC 3020
  • Helix Angle: 7.5000 DEGREES
  • Tooth Form: STANDARD
  • Tooth Direction: RIGHT
  • Body Style: PLAIN, SOLID
  • Face Nominal Width: 0.497 INCHES IN
  • Material Document and Classification: MIL-S-869,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Pressure Angle: 34.0000 DEGREES
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp Ez Overall construction
General Description

The Gear,helical, cataloged under National Stock Number 3020-00-820-6148, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-820-6148
Primary Part Number2121727
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Helix Angle7.5000 DEGREES
Tooth FormSTANDARD
Tooth DirectionRIGHT
Body StylePLAIN, SOLID
Face Nominal Width0.497 INCHES IN
Material Document and ClassificationMIL-S-869,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Pressure Angle34.0000 DEGREES
Pitch Diameter1.5000 INCHES NOMINAL IN
MaterialSTEEL COMP EZ OVERALL
Style DesignatorHUBLESS
Teeth TypeSINGLE HELIX
Teeth Quantity10
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3120-00-132-4745 INTERCHANGEABLE
Bearing,sleeve
Cross-Reference Index
Part NumberManufacturer
2121727 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
3120-00-132-4745INTERCHANGEABLE
BEARING,SLEEVE

Frequently Asked Questions

What is NSN 3020-00-820-6148?

NSN 3020-00-820-6148 is a Gear,helical, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-820-6148?

NSN 3020-00-820-6148 has 1 cross-referenced part number: 2121727 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 3020-00-820-6148?

There is 1 known substitute for 3020-00-820-6148: 3120-00-132-4745. Verify interchangeability with system specifications before substitution.

What are the specifications of 2121727?

Key specifications for 2121727: Helix Angle: 7.5000 DEGREES; Tooth Form: STANDARD; Tooth Direction: RIGHT; Body Style: PLAIN, SOLID. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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