PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20904Gear Rack

Moog Inc. Dba Ampac-Isp Corp · NSN 3020-01-189-3352 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-189-3352 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-189-3352. Primary manufacturer part number: 20904.
Features
  • Gear Rack — FSC 3020
  • Material: STEEL COMP 4140 OVERALL
  • Material Document and Classification: AISI/SAE4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • 3 verified cross-references
  • Primary manufacturer: Moog Inc. Dba Ampac-Isp Corp
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 4140 Overall construction
General Description

The Gear Rack, cataloged under National Stock Number 3020-01-189-3352, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Moog Inc. Dba Ampac-Isp Corp. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-189-3352
Primary Part Number20904
Item NameGear Rack
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerMoog Inc. Dba Ampac-Isp Corp
StatusACTIVE
MaterialSTEEL COMP 4140 OVERALL
Material Document and ClassificationAISI/SAE4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5975-00-065-39045523 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
4720-00-175-6280 INTERCHANGEABLE
Hose,preformed
5342-00-200-7586 INTERCHANGEABLE
Mount,resilient,weapon System
5360-00-291-428020904 INTERCHANGEABLE
Spring,helical,compression
Grove Valve Operations
5340-00-324-64758104990 INTERCHANGEABLE
Clamp,loop
Us Army Aviation and Missile Command
4310-01-064-238620-904 INTERCHANGEABLE
Compressor Unit,reciprocating
C&h Distributors, Llc
5355-01-074-604311579032 INTERCHANGEABLE
Knob
Army, United States Department of the Dba Watervliet Arsenal Div Business Development
3040-01-188-813320906 INTERCHANGEABLE
Head,linear Actuating Cylinder
Moog Inc. Dba Ampac-Isp Corp
3040-01-188-860520903 INTERCHANGEABLE
Head,linear Actuating Cylinder
Moog Inc. Dba Ampac-Isp Corp
3020-01-189-328020905 INTERCHANGEABLE
Sleeve,gear Rack
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
20904 PRIMARY Moog Inc. Dba Ampac-Isp Corp (USA)
895-20885 ITEM 20 Moog Inc. Dba Ampac-Isp Corp (USA)
895-20885 Moog Inc. Dba Ampac-Isp Corp (USA)
Related Parts
5975-00-065-3904INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5523
4720-00-175-6280INTERCHANGEABLE
HOSE,PREFORMED
5342-00-200-7586INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
5360-00-291-4280INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
20904
5340-00-324-6475INTERCHANGEABLE
CLAMP,LOOP
8104990
4310-01-064-2386INTERCHANGEABLE
COMPRESSOR UNIT,RECIPROCATING
20-904
5355-01-074-6043INTERCHANGEABLE
KNOB
11579032
3040-01-188-8133INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
20906
3040-01-188-8605INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
20903
3020-01-189-3280INTERCHANGEABLE
SLEEVE,GEAR RACK
20905
4720-01-226-7659INTERCHANGEABLE
HOSE,PREFORMED
20904
5360-01-275-1828INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION

Frequently Asked Questions

What is NSN 3020-01-189-3352?

NSN 3020-01-189-3352 is a Gear Rack, manufactured by Moog Inc. Dba Ampac-Isp Corp, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-189-3352?

NSN 3020-01-189-3352 has 3 cross-referenced part numbers: 20904 (Moog Inc. Dba Ampac-Isp Corp), 895-20885 ITEM 20 (Moog Inc. Dba Ampac-Isp Corp), 895-20885 (Moog Inc. Dba Ampac-Isp Corp).

What NSN replaces 3020-01-189-3352?

There are 12 known substitutes for 3020-01-189-3352: 5975-00-065-3904, 4720-00-175-6280, 5342-00-200-7586 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20904?

Key specifications for 20904: Material: STEEL COMP 4140 OVERALL; Material Document and Classification: AISI/SAE4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 2 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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