PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40XLCap,filler Opening

Lenz Co · NSN 2590-01-394-9697 · FSC 2590 · No Item Name Available
Verified by PartsTable
NSN 2590-01-394-9697 — this item is cataloged by the U.S. Government under National Stock Number 2590-01-394-9697. Primary manufacturer part number: 40XL.
Features
  • Cap,filler Opening — FSC 2590
  • Pressure Relief Method: MANUAL
  • System for Which Designed: PRESSURIZED
  • Locking Device Type: INTEGRAL SELF LOCK
  • 5 verified cross-references
  • Primary manufacturer: Lenz Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cap,filler Opening, cataloged under National Stock Number 2590-01-394-9697, is classified within Federal Supply Class 2590 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Lenz Co. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, 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
NSN2590-01-394-9697
Primary Part Number40XL
Item NameCap,filler Opening
FSC / FSG2590 / 25 — No Item Name Available
ManufacturerLenz Co
StatusACTIVE
Pressure Relief MethodMANUAL
System for Which DesignedPRESSURIZED
Locking Device TypeINTEGRAL SELF LOCK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
9390-00-530-318278029 INTERCHANGEABLE
Wick
Lucent Technologies Inc Corporate Headquarters
4820-00-541-883940XL-3/4-75PSI INTERCHANGEABLE
Valve,relief,pressure and Temper
Watts Regulator Company
4820-00-849-973140XL-3/4IN.100PSI INTERCHANGEABLE
Valve,relief,pressure and Temper
Watts Regulator Company
4820-00-855-6169 INTERCHANGEABLE
Valve,relief,pressure and Temper
5340-01-099-7880129684 INTERCHANGEABLE
Clamp,loop
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
Cross-Reference Index
Part NumberManufacturer
129684 Komatsu American Intl Co (USA)
129684 Komatsu America Corp. (USA)
40XL PRIMARY Lenz Co (USA)
40XI Lenz Co (USA)
40X1 Lenz Co (USA)
Related Parts
9390-00-530-3182INTERCHANGEABLE
WICK
78029
4820-00-541-8839INTERCHANGEABLE
VALVE,RELIEF,PRESSURE AND TEMPER
40XL-3/4-75PSI
4820-00-849-9731INTERCHANGEABLE
VALVE,RELIEF,PRESSURE AND TEMPER
40XL-3/4IN.100PSI
4820-00-855-6169INTERCHANGEABLE
VALVE,RELIEF,PRESSURE AND TEMPER
5340-01-099-7880INTERCHANGEABLE
CLAMP,LOOP
129684

Frequently Asked Questions

What is NSN 2590-01-394-9697?

NSN 2590-01-394-9697 is a Cap,filler Opening, manufactured by Lenz Co, classified under FSC 2590 (No Item Name Available). Status: active.

What are the part numbers for NSN 2590-01-394-9697?

NSN 2590-01-394-9697 has 5 cross-referenced part numbers: 129684 (Komatsu American Intl Co), 129684 (Komatsu America Corp.), 40XL (Lenz Co), 40XI (Lenz Co), 40X1 (Lenz Co).

What NSN replaces 2590-01-394-9697?

There are 5 known substitutes for 2590-01-394-9697: 9390-00-530-3182, 4820-00-541-8839, 4820-00-849-9731 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40XL?

Key specifications for 40XL: Pressure Relief Method: MANUAL; System for Which Designed: PRESSURIZED; Locking Device Type: INTEGRAL SELF LOCK; End Item Identification: KOMATSU DRESSER CO MOTORIZED ROLLER MACHINE MODEL 708. 5 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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