PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A4074Gear Cluster

Simmonds Precision Products Inc · NSN 3020-00-795-9536 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-795-9536 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-795-9536. Primary manufacturer part number: A4074.
Features
  • Gear Cluster — FSC 3020
  • Hub Nominal Diameter: 0.125 INCHES FIRST END IN
  • Nominal Outside Diameter: 0.7020 INCHES FIRST GEAR IN
  • Nominal Outside Diameter: 0.1810 INCHES SECOND GEAR IN
  • Hub Style Designator: PLAIN FIRST END
  • Hub Style Designator: 1 STEP SECOND END
  • Construction: ASSEMBLED
  • Design Type: SPUR SECOND GEAR
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 630 Overall construction
General Description

The Gear Cluster, cataloged under National Stock Number 3020-00-795-9536, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-795-9536
Primary Part NumberA4074
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSimmonds Precision Products Inc
StatusACTIVE
Hub Nominal Diameter0.125 INCHES FIRST END IN
Nominal Outside Diameter0.7020 INCHES FIRST GEAR IN
Nominal Outside Diameter0.1810 INCHES SECOND GEAR IN
Hub Style DesignatorPLAIN FIRST END
Hub Style Designator1 STEP SECOND END
ConstructionASSEMBLED
Design TypeSPUR SECOND GEAR
Hub Style DesignatorPLAIN BETWEEN FIRST AND SECOND GEAR
Design TypeSPUR FIRST GEAR
MaterialSTEEL COMP 630 OVERALL
Nominal Overall Length0.545 INCHES IN
Hub Nominal Diameter0.187 INCHES SECOND END IN
Precision ClassificationQUALITY NUMBER 10 OR QUALITY NUMBER 11 ALL GEARS
Hub Nominal Length0.030 INCHES BETWEEN FIRST AND SECOND GEAR IN
Hub Nominal Length0.130 INCHES FIRST END IN
Hub Nominal Diameter0.114 INCHES BETWEEN FIRST AND SECOND GEAR IN
Hub Nominal Length0.135 INCHES SECOND END IN
Material Document and ClassificationAMS 5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3120-00-287-6285A407-4 INTERCHANGEABLE
Bearing,sleeve
Chrysler Corp Amplex Div
2530-00-517-33777440-5 INTERCHANGEABLE
Cap,grease
Saginaw Products Corporation Dba Cignys
6810-01-447-4950 INTERCHANGEABLE
Alcohol,denatured
Cross-Reference Index
Part NumberManufacturer
A4074 PRIMARY Simmonds Precision Products Inc (USA)
A4074 American Precision Gear Company Dba American Precision Gear Co Div Same (USA)
7959536 Aero Customs Inc (USA)
Related Parts
3120-00-287-6285INTERCHANGEABLE
BEARING,SLEEVE
A407-4
2530-00-517-3377INTERCHANGEABLE
CAP,GREASE
7440-5
6810-01-447-4950INTERCHANGEABLE
ALCOHOL,DENATURED

Frequently Asked Questions

What is NSN 3020-00-795-9536?

NSN 3020-00-795-9536 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 3020-00-795-9536?

NSN 3020-00-795-9536 has 3 cross-referenced part numbers: A4074 (Simmonds Precision Products Inc), A4074 (American Precision Gear Company Dba American Precision Gear Co Div Same), 7959536 (Aero Customs Inc).

What NSN replaces 3020-00-795-9536?

There are 3 known substitutes for 3020-00-795-9536: 3120-00-287-6285, 2530-00-517-3377, 6810-01-447-4950. Verify interchangeability with system specifications before substitution.

What are the specifications of A4074?

Key specifications for A4074: Hub Nominal Diameter: 0.125 INCHES FIRST END IN; Nominal Outside Diameter: 0.7020 INCHES FIRST GEAR IN; Nominal Outside Diameter: 0.1810 INCHES SECOND GEAR IN; Hub Style Designator: PLAIN FIRST END. 18 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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