PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A4235Gear,spur

L3 Technologies, Inc. · NSN 3020-00-275-1099 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-275-1099 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-275-1099. Primary manufacturer part number: A4235.
Features
  • Gear,spur — FSC 3020
  • Teeth Quantity: 63
  • Body Style: PLAIN, SOLID
  • Bore Style: W/ KEYWAY BOTH ENDS
  • Bore Nominal Diameter: 0.312 INCHES BOTH ENDS IN
  • Nominal Outside Diameter: 2.031 INCHES IN
  • Hub Style Designator: PINNED FIRST END
  • Tooth Form: STANDARD
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Copper Alloy Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-275-1099, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is L3 Technologies, Inc.. Government technical data includes 17 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
NSN3020-00-275-1099
Primary Part NumberA4235
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerL3 Technologies, Inc.
StatusACTIVE
Teeth Quantity63
Body StylePLAIN, SOLID
Bore StyleW/ KEYWAY BOTH ENDS
Bore Nominal Diameter0.312 INCHES BOTH ENDS IN
Nominal Outside Diameter2.031 INCHES IN
Hub Style DesignatorPINNED FIRST END
Tooth FormSTANDARD
Keyway Nominal Width0.062 INCHES BOTH ENDS IN
Pressure Angle14.5000 DEGREES
Nominal Distance Between Body Face and Protruding Hub End0.734 INCHES FIRST END IN
Face Nominal Width0.094 INCHES IN
MaterialCOPPER ALLOY OVERALL
Nominal Distance From Bore Center to Keyway Bottom0.187 INCHES BOTH ENDS IN
Style DesignatorPROTRUDING HUB
Hub Nominal Diameter0.500 INCHES FIRST END IN
Material Document and ClassificationMIL-B-16540,GRADEA MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Pitch Diameter1.9687 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4140-00-031-2642 INTERCHANGEABLE
Impeller,fan,axial
Cross-Reference Index
Part NumberManufacturer
A4235 L3 Technologies, Inc. (USA)
Related Parts
4140-00-031-2642INTERCHANGEABLE
IMPELLER,FAN,AXIAL

Frequently Asked Questions

What is NSN 3020-00-275-1099?

NSN 3020-00-275-1099 is a Gear,spur, manufactured by L3 Technologies, Inc., classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-275-1099?

NSN 3020-00-275-1099 has 1 cross-referenced part number: A4235 (L3 Technologies, Inc.).

What NSN replaces 3020-00-275-1099?

There is 1 known substitute for 3020-00-275-1099: 4140-00-031-2642. Verify interchangeability with system specifications before substitution.

What are the specifications of A4235?

Key specifications for A4235: Teeth Quantity: 63; Body Style: PLAIN, SOLID; Bore Style: W/ KEYWAY BOTH ENDS; Bore Nominal Diameter: 0.312 INCHES BOTH ENDS IN. 17 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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