PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILC45300Cap,filler Opening

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 2590-00-798-4056 · FSC 2590 · No Item Name Available
Verified by PartsTable
NSN 2590-00-798-4056 — this item is cataloged by the U.S. Government under National Stock Number 2590-00-798-4056. Primary manufacturer part number: MILC45300.
Features
  • Cap,filler Opening — FSC 2590
  • Retaining Device Length: 7.000 INCHES NOMINAL IN
  • System for Which Designed: PRESSURIZED
  • Retaining Device Type: CHAIN AND WIRE HOOK AND STRAP
  • Pressure Relief Method: AUTOMATIC
  • Cam Quantity: 3
  • Style Designator: OUTSIDE CAM TYPE
  • Nondefinitive Spec/std Data: 1 TYPE
Applications
  • Applications requiring Steel Overall construction
General Description

The Cap,filler Opening, cataloged under National Stock Number 2590-00-798-4056, is classified within Federal Supply Class 2590 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2590-00-798-4056
Primary Part NumberMILC45300
Item NameCap,filler Opening
FSC / FSG2590 / 25 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Retaining Device Length7.000 INCHES NOMINAL IN
System for Which DesignedPRESSURIZED
Retaining Device TypeCHAIN AND WIRE HOOK AND STRAP
Pressure Relief MethodAUTOMATIC
Cam Quantity3
Style DesignatorOUTSIDE CAM TYPE
Nondefinitive Spec/std Data1 TYPE
Maximum Working Pressure4.500 POUNDS PER SQUARE INCH (PSI) LBS
Surface TreatmentCADMIUM OR ZINC OVERALL
MaterialSTEEL OVERALL
Accommodation TypeHANDLE END GRIPPING
Filler Neck Diameter for Which Designed4.375 INCHES NOMINAL IN
Features ProvidedBREATHER HOLE
Special MarkingsPULL OUT TO CLEAN
Surface TreatmentPHOSPHATE BODY
Outside Diameter4.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
2590-00-141-9758 INTERCHANGEABLE
Cap,filler Opening
2930-00-428-5829 INTERCHANGEABLE
Shaft,drive,water P
2590-00-911-0081 INTERCHANGEABLE
Cap,filler Opening
5120-01-660-2096850655 INTERCHANGEABLE
Multiplier,torque Wrench
Ryeson Corporation Div Sturtevant Richmont
Cross-Reference Index
Part NumberManufacturer
MILC45300 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS51300-1 Drs Sustainment Systems Inc (USA)
10491860 Nimikkeistokeskus Ncb Finland (FIN)
7984056 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
MS51300-1 United Air Filter, Inc. (USA)
MS51300-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
10922957 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
L127D Maradyne Corporation (USA)
L127D Greenlees Filter Llc (USA)
850655 General Motors Corp (USA)
2910007984056 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
850655 General Motors Llc Dba General Motors (USA)
MS51300 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
2590-00-141-9758INTERCHANGEABLE
CAP,FILLER OPENING
2930-00-428-5829INTERCHANGEABLE
SHAFT,DRIVE,WATER P
2590-00-911-0081INTERCHANGEABLE
CAP,FILLER OPENING
5120-01-660-2096INTERCHANGEABLE
MULTIPLIER,TORQUE WRENCH
850655

Frequently Asked Questions

What is NSN 2590-00-798-4056?

NSN 2590-00-798-4056 is a Cap,filler Opening, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 2590 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2590-00-798-4056?

NSN 2590-00-798-4056 has 13 cross-referenced part numbers: MILC45300 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS51300-1 (Drs Sustainment Systems Inc), 10491860 (Nimikkeistokeskus Ncb Finland), 7984056 (U S Army Tank Automotive Command Amsta-Im-Mm), MS51300-1 (United Air Filter, Inc.) and 8 more.

What NSN replaces 2590-00-798-4056?

There are 4 known substitutes for 2590-00-798-4056: 2590-00-141-9758, 2930-00-428-5829, 2590-00-911-0081 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILC45300?

Key specifications for MILC45300: Retaining Device Length: 7.000 INCHES NOMINAL IN; System for Which Designed: PRESSURIZED; Retaining Device Type: CHAIN AND WIRE HOOK AND STRAP; Pressure Relief Method: AUTOMATIC. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2590-00-798-4056 still in active supply?

NSN 2590-00-798-4056 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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