PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

XA6910Gear,helical

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 3020-01-077-8133 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-077-8133 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-077-8133. Primary manufacturer part number: XA6910.
Features
  • Gear,helical — FSC 3020
  • Face Nominal Width: 2.500 INCHES IN
  • Bore Style: TAPERED W/KEYWAY FIRST END
  • Material: STEEL OVERALL
  • Nominal Overall Length: 5.000 INCHES IN
  • Nominal Outside Diameter: 21.987 INCHES IN
  • Pressure Angle: 20.0000 DEGREES
  • Teeth Quantity: 126
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Overall construction
General Description

The Gear,helical, cataloged under National Stock Number 3020-01-077-8133, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-077-8133
Primary Part NumberXA6910
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Face Nominal Width2.500 INCHES IN
Bore StyleTAPERED W/KEYWAY FIRST END
MaterialSTEEL OVERALL
Nominal Overall Length5.000 INCHES IN
Nominal Outside Diameter21.987 INCHES IN
Pressure Angle20.0000 DEGREES
Teeth Quantity126
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-249-2032 INTERCHANGEABLE
Tee,pipe
6150-00-448-9597A6910 INTERCHANGEABLE
Lead,electrical
Grimes Aerospace Company
Cross-Reference Index
Part NumberManufacturer
A6910 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
XA6910 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
4730-00-249-2032INTERCHANGEABLE
TEE,PIPE
6150-00-448-9597INTERCHANGEABLE
LEAD,ELECTRICAL
A6910

Frequently Asked Questions

What is NSN 3020-01-077-8133?

NSN 3020-01-077-8133 is a Gear,helical, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-077-8133?

NSN 3020-01-077-8133 has 2 cross-referenced part numbers: A6910 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), XA6910 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 3020-01-077-8133?

There are 2 known substitutes for 3020-01-077-8133: 4730-00-249-2032, 6150-00-448-9597. Verify interchangeability with system specifications before substitution.

What are the specifications of XA6910?

Key specifications for XA6910: Face Nominal Width: 2.500 INCHES IN; Bore Style: TAPERED W/KEYWAY FIRST END; Material: STEEL OVERALL; Nominal Overall Length: 5.000 INCHES IN. 7 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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