PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M2940-2-L-B-T-GDampener,fluid Pressure

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6685-01-511-5594 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-511-5594 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-511-5594. Primary manufacturer part number: M2940-2-L-B-T-G.
Features
  • Dampener,fluid Pressure — FSC 6685
  • Fluid Type for Which Designed: GASOLINE AND STEAM AND WATER
  • Material: NICKEL ALLOY
  • Threaded Direct Pressure Connection: PROVIDED
  • Connection Quantity: 2
  • Operating Pressure Range: +10.0 TO 1000.0 POUNDS PER SQUARE INCH LBS
  • Tube Connection Type: FLARELESS
  • Removable Piston: NOT PROVIDED
Applications
  • Applications requiring Nickel Alloy construction
General Description

The Dampener,fluid Pressure, cataloged under National Stock Number 6685-01-511-5594, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment 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 7 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-511-5594
Primary Part NumberM2940-2-L-B-T-G
Item NameDampener,fluid Pressure
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Fluid Type for Which DesignedGASOLINE AND STEAM AND WATER
MaterialNICKEL ALLOY
Threaded Direct Pressure ConnectionPROVIDED
Connection Quantity2
Operating Pressure Range+10.0 TO 1000.0 POUNDS PER SQUARE INCH LBS
Tube Connection TypeFLARELESS
Removable PistonNOT PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6685-01-501-0899 INTERCHANGEABLE
Dampener,fluid Pressure
6685-01-633-8717 INTERCHANGEABLE
Dampener,fluid Pressure
Cross-Reference Index
Part NumberManufacturer
M2940-2-L-B-T-G Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M2940-2-L-B-T-G(7/16-20UNF) Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-2940D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6685-01-501-0899INTERCHANGEABLE
DAMPENER,FLUID PRESSURE
6685-01-633-8717INTERCHANGEABLE
DAMPENER,FLUID PRESSURE

Frequently Asked Questions

What is NSN 6685-01-511-5594?

NSN 6685-01-511-5594 is a Dampener,fluid Pressure, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-511-5594?

NSN 6685-01-511-5594 has 3 cross-referenced part numbers: M2940-2-L-B-T-G (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M2940-2-L-B-T-G(7/16-20UNF) (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-2940D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6685-01-511-5594?

There are 2 known substitutes for 6685-01-511-5594: 6685-01-501-0899, 6685-01-633-8717. Verify interchangeability with system specifications before substitution.

What are the specifications of M2940-2-L-B-T-G?

Key specifications for M2940-2-L-B-T-G: Special Features: (INAVY)SNUBBER; Fluid Type for Which Designed: GASOLINE AND STEAM AND WATER; Material: NICKEL ALLOY; Overall Width: 2.000 INCHES MAXIMUM IN. 11 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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