PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6656Adapter

Thomas C. Wilson, Inc. Dba Thomas C Wilson · NSN 4940-00-318-9078 · FSC 4940 · No Item Name Available
Verified by PartsTable
NSN 4940-00-318-9078 — this item is cataloged by the U.S. Government under National Stock Number 4940-00-318-9078. Primary manufacturer part number: 6656.
Features
  • Adapter — FSC 4940
  • 2 verified cross-references
  • Primary manufacturer: Thomas C. Wilson, Inc. Dba Thomas C Wilson
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Adapter, cataloged under National Stock Number 4940-00-318-9078, is classified within Federal Supply Class 4940 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Thomas C. Wilson, Inc. Dba Thomas C Wilson. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameAdapter
FSC / FSG4940 — No Item Name Available (FSG 49)
ManufacturersThomas C. Wilson, Inc. Dba Thomas C Wilson (CAGE 66042)
Technical Specifications
ParameterValue
NSN4940-00-318-9078
Primary Part Number6656
Item NameAdapter
FSC / FSG4940 / 49 — No Item Name Available
ManufacturerThomas C. Wilson, Inc. Dba Thomas C Wilson
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5133-00-061-628844476 INTERCHANGEABLE
Drill,twist
Greenfield Industries Inc
3120-00-237-76826656 INTERCHANGEABLE
Bearing,sleeve
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
4820-00-450-9840665-6 INTERCHANGEABLE
Cartridge,check Valve
Admiral Valve Llc Dba Cpv Manufacturing
5330-00-556-7134 INTERCHANGEABLE
Packing Material
4820-00-690-20686656 INTERCHANGEABLE
Diaphragm,valve,flat
Imi Cash Valve Inc
5950-00-813-8352SM-D-415301 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5950-00-947-6643 INTERCHANGEABLE
Coil,radio Frequency
4320-01-037-4793622/6656 INTERCHANGEABLE
Diaphragm Assembly
Coffin Turbo Pump Inc
5330-01-295-68296656 INTERCHANGEABLE
Retainer,packing
Davis Frank T and Associates
4820-01-438-15586290-G501 INTERCHANGEABLE
Cock,poppet Drain
Howell Laboratories Inc Dba Howell Laboratories Inc
Cross-Reference Index
Part NumberManufacturer
6656 Thomas C. Wilson, Inc. Dba Thomas C Wilson (USA)
L853NSH1PC313 Thomas C. Wilson, Inc. Dba Thomas C Wilson (USA)
Related Parts
5133-00-061-6288INTERCHANGEABLE
DRILL,TWIST
44476
3120-00-237-7682INTERCHANGEABLE
BEARING,SLEEVE
6656
4820-00-450-9840INTERCHANGEABLE
CARTRIDGE,CHECK VALVE
665-6
5330-00-556-7134INTERCHANGEABLE
PACKING MATERIAL
4820-00-690-2068INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
6656
5950-00-813-8352INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
SM-D-415301
5950-00-947-6643INTERCHANGEABLE
COIL,RADIO FREQUENCY
4320-01-037-4793INTERCHANGEABLE
DIAPHRAGM ASSEMBLY
622/6656
5330-01-295-6829INTERCHANGEABLE
RETAINER,PACKING
6656
4820-01-438-1558INTERCHANGEABLE
COCK,POPPET DRAIN
6290-G501

Frequently Asked Questions

What is NSN 4940-00-318-9078?

NSN 4940-00-318-9078 is a Adapter, manufactured by Thomas C. Wilson, Inc. Dba Thomas C Wilson, classified under FSC 4940 (No Item Name Available). Status: active.

What are the part numbers for NSN 4940-00-318-9078?

NSN 4940-00-318-9078 has 2 cross-referenced part numbers: 6656 (Thomas C. Wilson, Inc. Dba Thomas C Wilson), L853NSH1PC313 (Thomas C. Wilson, Inc. Dba Thomas C Wilson).

What NSN replaces 4940-00-318-9078?

There are 10 known substitutes for 4940-00-318-9078: 5133-00-061-6288, 3120-00-237-7682, 4820-00-450-9840 and 7 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com