PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2120-1Cap,filler Opening

Gt Development Corp · NSN 2590-01-439-9430 · FSC 2590 · No Item Name Available
Verified by PartsTable
NSN 2590-01-439-9430 — this item is cataloged by the U.S. Government under National Stock Number 2590-01-439-9430. Primary manufacturer part number: 2120-1.
Features
  • Cap,filler Opening — FSC 2590
  • Material: STEEL OVERALL
  • System for Which Designed: PRESSURIZED
  • 1 verified cross-reference
  • Primary manufacturer: Gt Development Corp
Applications
  • Applications requiring Steel Overall construction
General Description

The Cap,filler Opening, cataloged under National Stock Number 2590-01-439-9430, is classified within Federal Supply Class 2590 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Gt Development Corp. Government technical data includes 2 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2590-01-439-9430
Primary Part Number2120-1
Item NameCap,filler Opening
FSC / FSG2590 / 25 — No Item Name Available
ManufacturerGt Development Corp
StatusACTIVE
MaterialSTEEL OVERALL
System for Which DesignedPRESSURIZED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5975-00-267-277697T075 INTERCHANGEABLE
Coupling,electrical Conduit
Egs Electrical Group Appleton Div
5310-00-282-954221201 INTERCHANGEABLE
Nut,plain,hexagon
Dresser, Llc
5310-00-486-521421201 INTERCHANGEABLE
Nut,plain,hexagon
Falls Filtration Technologies, Inc.
2915-00-931-296521201 INTERCHANGEABLE
Cover,relief Valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4510-01-116-16192120-1 INTERCHANGEABLE
Holder,water Tumbler
Charles a Starr Company Inc Dba Charles a Starr Company Inc
3040-01-188-326121201 INTERCHANGEABLE
Weight,counterbalance
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
4720-01-246-804121201 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5330-01-350-046721201 INTERCHANGEABLE
Gasket
Hf Scientific Inc.
4820-01-417-940721201-1004-1 INTERCHANGEABLE
Piston,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-418-004321201-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
2120-1 PRIMARY Gt Development Corp (USA)
Related Parts
5975-00-267-2776INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
97T075
5310-00-282-9542INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21201
5310-00-486-5214INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21201
2915-00-931-2965INTERCHANGEABLE
COVER,RELIEF VALVE
21201
4510-01-116-1619INTERCHANGEABLE
HOLDER,WATER TUMBLER
2120-1
3040-01-188-3261INTERCHANGEABLE
WEIGHT,COUNTERBALANCE
21201
4720-01-246-8041INTERCHANGEABLE
HOSE,PREFORMED
21201
5330-01-350-0467INTERCHANGEABLE
GASKET
21201
4820-01-417-9407INTERCHANGEABLE
PISTON,VALVE
21201-1004-1
4820-01-418-0043INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21201-001
3040-01-424-2612INTERCHANGEABLE
SHAFT,SHOULDERED
21201-1005-1
5360-01-624-4406INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21-201

Frequently Asked Questions

What is NSN 2590-01-439-9430?

NSN 2590-01-439-9430 is a Cap,filler Opening, manufactured by Gt Development Corp, classified under FSC 2590 (No Item Name Available). Status: active.

What are the part numbers for NSN 2590-01-439-9430?

NSN 2590-01-439-9430 has 1 cross-referenced part number: 2120-1 (Gt Development Corp).

What NSN replaces 2590-01-439-9430?

There are 12 known substitutes for 2590-01-439-9430: 5975-00-267-2776, 5310-00-282-9542, 5310-00-486-5214 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2120-1?

Key specifications for 2120-1: Material: STEEL OVERALL; System for Which Designed: PRESSURIZED. 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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