PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A4038Gear Cluster

Simmonds Precision Products Inc · NSN 3020-00-795-9535 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-795-9535 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-795-9535. Primary manufacturer part number: A4038.
Features
  • Gear Cluster — FSC 3020
  • Hub Nominal Length: 0.359 INCHES SECOND END IN
  • Hub Style Designator: PLAIN BETWEEN FIRST AND SECOND GEAR
  • Design Type: SPUR SECOND GEAR
  • Material: STEEL COMP 416 OVERALL
  • Nominal Outside Diameter: 0.1710 INCHES SECOND GEAR IN
  • Hub Nominal Diameter: 0.089 INCHES BETWEEN FIRST AND SECOND GEAR IN
  • Hub Nominal Diameter: 0.078 INCHES SECOND END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 416 Overall construction
General Description

The Gear Cluster, cataloged under National Stock Number 3020-00-795-9535, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Simmonds Precision Products Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, 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
NSN3020-00-795-9535
Primary Part NumberA4038
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSimmonds Precision Products Inc
StatusACTIVE
Hub Nominal Length0.359 INCHES SECOND END IN
Hub Style DesignatorPLAIN BETWEEN FIRST AND SECOND GEAR
Design TypeSPUR SECOND GEAR
MaterialSTEEL COMP 416 OVERALL
Nominal Outside Diameter0.1710 INCHES SECOND GEAR IN
Hub Nominal Diameter0.089 INCHES BETWEEN FIRST AND SECOND GEAR IN
Hub Nominal Diameter0.078 INCHES SECOND END IN
Hub Nominal Diameter0.125 INCHES FIRST END IN
Surface TreatmentPASSIVATE OVERALL
Hub Nominal Length0.078 INCHES BETWEEN FIRST AND SECOND GEAR IN
Nominal Outside Diameter0.563 INCHES FIRST GEAR IN
Material Document and ClassificationQQ-S-763,CLASS 416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Hub Style Designator1 STEP BOTH ENDS
Hub Nominal Length0.141 INCHES FIRST END IN
Design TypeSPUR FIRST GEAR
ConstructionSOLID
Nominal Overall Length0.800 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-100-62161576-1066 INTERCHANGEABLE
Ball,bearing
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
A4038A Simmonds Precision Products Inc (USA)
A4038 American Precision Gear Company Dba American Precision Gear Co Div Same (USA)
7959535 S & S Commercial Fishing Equipment, Incorporated (USA)
A4038 PRIMARY Simmonds Precision Products Inc (USA)
7959535 Aero Customs Inc (USA)
Related Parts
3110-00-100-6216INTERCHANGEABLE
BALL,BEARING
1576-1066

Frequently Asked Questions

What is NSN 3020-00-795-9535?

NSN 3020-00-795-9535 is a Gear Cluster, manufactured by Simmonds Precision Products Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-795-9535?

NSN 3020-00-795-9535 has 5 cross-referenced part numbers: A4038A (Simmonds Precision Products Inc), A4038 (American Precision Gear Company Dba American Precision Gear Co Div Same), 7959535 (S & S Commercial Fishing Equipment, Incorporated), A4038 (Simmonds Precision Products Inc), 7959535 (Aero Customs Inc).

What NSN replaces 3020-00-795-9535?

There is 1 known substitute for 3020-00-795-9535: 3110-00-100-6216. Verify interchangeability with system specifications before substitution.

What are the specifications of A4038?

Key specifications for A4038: Hub Nominal Length: 0.359 INCHES SECOND END IN; Hub Style Designator: PLAIN BETWEEN FIRST AND SECOND GEAR; Design Type: SPUR SECOND GEAR; Material: STEEL COMP 416 OVERALL. 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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