PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37990Gear Rack

Moog Inc. Dba Ampac-Isp Corp · NSN 3020-01-450-9796 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-450-9796 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-450-9796. Primary manufacturer part number: 37990.
Features
  • Gear Rack — FSC 3020
  • Material Document and Classification: AISI 4140 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
  • Material: STEEL 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 Overall construction
General Description

The Gear Rack, cataloged under National Stock Number 3020-01-450-9796, 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 3 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-450-9796
Primary Part Number37990
Item NameGear Rack
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerMoog Inc. Dba Ampac-Isp Corp
StatusACTIVE
Material Document and ClassificationAISI 4140 FED STD SINGLE MATERIAL RESPONSE OVERALL
Hardness Rating32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-603-51843799 INTERCHANGEABLE
Tee-Y,drainage Pipe
Esab Group, Inc., the Dba Esab Welding and Cutting Products Div Esab Welding and Cuttng
3120-00-826-6221 INTERCHANGEABLE
Bearing,hammer Shaf
5995-00-905-592037990 INTERCHANGEABLE
Cord Assembly,electrical
Roanwell, Llc
3020-01-450-977137252 INTERCHANGEABLE
Gear,spur
Moog Inc. Dba Ampac-Isp Corp
3040-01-451-054136930 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
3770-40125 Moog Inc. Dba Ampac-Isp Corp (USA)
3770-40125 ITEM 3 Moog Inc. Dba Ampac-Isp Corp (USA)
37990 PRIMARY Moog Inc. Dba Ampac-Isp Corp (USA)
Related Parts
4730-00-603-5184INTERCHANGEABLE
TEE-Y,DRAINAGE PIPE
3799
3120-00-826-6221INTERCHANGEABLE
BEARING,HAMMER SHAF
5995-00-905-5920INTERCHANGEABLE
CORD ASSEMBLY,ELECTRICAL
37990
3020-01-450-9771INTERCHANGEABLE
GEAR,SPUR
37252
3040-01-451-0541INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
36930

Frequently Asked Questions

What is NSN 3020-01-450-9796?

NSN 3020-01-450-9796 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 3020-01-450-9796?

NSN 3020-01-450-9796 has 3 cross-referenced part numbers: 3770-40125 (Moog Inc. Dba Ampac-Isp Corp), 3770-40125 ITEM 3 (Moog Inc. Dba Ampac-Isp Corp), 37990 (Moog Inc. Dba Ampac-Isp Corp).

What NSN replaces 3020-01-450-9796?

There are 5 known substitutes for 3020-01-450-9796: 4730-00-603-5184, 3120-00-826-6221, 5995-00-905-5920 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 37990?

Key specifications for 37990: End Item Identification: SEAWOLF CLASS SSN; Material Document and Classification: AISI 4140 FED STD SINGLE MATERIAL RESPONSE OVERALL; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL; Material: STEEL OVERALL. 4 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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