PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C66C30ECap,valve,gas Cylinder Outlet

Kerotest Manufacturing Corp. · NSN 8120-00-216-6799 · FSC 8120 · No Item Name Available
Verified by PartsTable
NSN 8120-00-216-6799 — this item is cataloged by the U.S. Government under National Stock Number 8120-00-216-6799. Primary manufacturer part number: C66C30E.
Features
  • Cap,valve,gas Cylinder Outlet — FSC 8120
  • Retaining Device Length: 3.000 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
  • Thread Pitch Diameters: +0.8616 TO 0.8652 INCHES IN
  • Thread Series Designator: NGO
  • Material: COPPER ALLOY OVERALL
  • Retaining Device Type: CHAIN
  • Filler Neck Diameter for Which Designed: 0.908 INCHES NOMINAL IN
  • Thread Diameter: 0.908 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Cap,valve,gas Cylinder Outlet, cataloged under National Stock Number 8120-00-216-6799, is classified within Federal Supply Class 8120 (No Item Name Available) of the Containers, Packaging, and Packing Supplies group. The primary manufacturer of record is Kerotest Manufacturing Corp.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN8120-00-216-6799
Primary Part NumberC66C30E
Item NameCap,valve,gas Cylinder Outlet
FSC / FSG8120 / 81 — No Item Name Available
ManufacturerKerotest Manufacturing Corp.
StatusCANCELLED
Retaining Device Length3.000 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
Thread Pitch Diameters+0.8616 TO 0.8652 INCHES IN
Thread Series DesignatorNGO
MaterialCOPPER ALLOY OVERALL
Retaining Device TypeCHAIN
Filler Neck Diameter for Which Designed0.908 INCHES NOMINAL IN
Thread Diameter0.908 INCHES NOMINAL IN
Thread Quantity14.000 PER INCH
Accommodation TypeHEXAGON END GRIPPING
Thread Length0.562 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
8120-00-142-9246 INTERCHANGEABLE
Valve,cylinder,gas
8120-00-281-3798 INTERCHANGEABLE
Valve,cylinder,gas
8120-00-281-3799 INTERCHANGEABLE
Valve,cylinder,gas
8120-00-281-3802 INTERCHANGEABLE
Valve,cylinder,gas
8120-00-281-3805 INTERCHANGEABLE
Valve,cylinder,gas
8120-00-283-09251250C2 INTERCHANGEABLE
Valve,cylinder,gas
Superior Valve Co
8120-00-597-0888 INTERCHANGEABLE
Valve,cylinder,gas
8120-00-803-2172 INTERCHANGEABLE
Valve,cylinder,gas
8120-01-224-62041100-346B INTERCHANGEABLE
Valve,cylinder,gas
Superior Valve Co
8120-01-524-6760 INTERCHANGEABLE
Valve,cylinder,gas
Cross-Reference Index
Part NumberManufacturer
C66C30E Kerotest Manufacturing Corp. (USA)
CP-540 Western Enterprises Div of Scott and Fetzer Co (USA)
DGSC67B1-3 Dla Aviation Engineering Div Department of Defense (USA)
MIL-DTL-2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-2-540 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-A-59860 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
562NA40 Rego Co a Marmon Group Co (USA)
MIL-V-2-540 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AA59860-076 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A3724 Stewart Avionics Inc (USA)
Related Parts
8120-00-142-9246INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-00-281-3798INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-00-281-3799INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-00-281-3802INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-00-281-3805INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-00-283-0925INTERCHANGEABLE
VALVE,CYLINDER,GAS
1250C2
8120-00-597-0888INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-00-803-2172INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-01-224-6204INTERCHANGEABLE
VALVE,CYLINDER,GAS
1100-346B
8120-01-524-6760INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-01-524-6772INTERCHANGEABLE
VALVE,CYLINDER,GAS
8120-01-527-2850INTERCHANGEABLE
VALVE,CYLINDER,GAS

Frequently Asked Questions

What is NSN 8120-00-216-6799?

NSN 8120-00-216-6799 is a Cap,valve,gas Cylinder Outlet, manufactured by Kerotest Manufacturing Corp., classified under FSC 8120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 8120-00-216-6799?

NSN 8120-00-216-6799 has 10 cross-referenced part numbers: C66C30E (Kerotest Manufacturing Corp.), CP-540 (Western Enterprises Div of Scott and Fetzer Co), DGSC67B1-3 (Dla Aviation Engineering Div Department of Defense), MIL-DTL-2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-2-540 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 5 more.

What NSN replaces 8120-00-216-6799?

There are 12 known substitutes for 8120-00-216-6799: 8120-00-142-9246, 8120-00-281-3798, 8120-00-281-3799 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C66C30E?

Key specifications for C66C30E: Retaining Device Length: 3.000 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN; Thread Pitch Diameters: +0.8616 TO 0.8652 INCHES IN; Thread Series Designator: NGO; Material: COPPER ALLOY OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 8120-00-216-6799 still in active supply?

NSN 8120-00-216-6799 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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