PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-E-17777/MIL-CUC-AElectrode,cutting,solid

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3439-00-870-9934 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-870-9934 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-870-9934. Primary manufacturer part number: MIL-E-17777/MIL-CUC-A.
Features
  • Electrode,cutting,solid — FSC 3439
  • Shape: ROUND
  • Nondefinitive Spec/std Data: PE;MIL CUC-A TYPE
  • Length: 12.000 INCHES NOMINAL12.000 INCHES NOMINAL IN
  • Material: CARBON NON FILLER
  • Outside Diameter: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
  • Material Document and Classification: MIL-E-17777,TY MIL-CUC-A MIL SPEC MIL SPEC SINGLE MATERIAL RESPONSE NON FILLER
  • Process Type for Which Designed: CARBON ARCCARBON ARC
Applications
  • Applications requiring Carbon Non Filler construction
General Description

The Electrode,cutting,solid, cataloged under National Stock Number 3439-00-870-9934, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3439-00-870-9934
Primary Part NumberMIL-E-17777/MIL-CUC-A
Item NameElectrode,cutting,solid
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
ShapeROUND
Nondefinitive Spec/std DataPE;MIL CUC-A TYPE
Length12.000 INCHES NOMINAL12.000 INCHES NOMINAL IN
MaterialCARBON NON FILLER
Outside Diameter0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
Material Document and ClassificationMIL-E-17777,TY MIL-CUC-A MIL SPEC MIL SPEC SINGLE MATERIAL RESPONSE NON FILLER
Process Type for Which DesignedCARBON ARCCARBON ARC
Surface TreatmentCOPPER
Surface Treatment Document and ClassificationMIL-E-17777 MIL SPEC SINGLE TREATMENT RESPONSE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5950-00-400-910221043 INTERCHANGEABLE
Transformer,pulse
Magnetika Inc
1660-00-677-996721043-1 INTERCHANGEABLE
Converter,liquid Oxygen
Ingersoll-Rand Company Dba Ingersoll-Rand
6625-01-012-579721043 INTERCHANGEABLE
Tuning Unit,generator
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
3439-01-022-5849 INTERCHANGEABLE
Electrode,cutting,solid
5841-01-101-099821043 INTERCHANGEABLE
Panel,bottom Rear
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
4820-01-280-0553 INTERCHANGEABLE
Valve,plug
4720-01-348-432721043 INTERCHANGEABLE
Hose Assembly,nonmetallic
Allied Systems Company Dba Allied Systems Co
5975-01-378-761621043 INTERCHANGEABLE
Strap,tie Down,electrical Compon
Waytek Inc
6240-01-582-835420906 INTERCHANGEABLE
Lamp,fluorescent
Osram Sylvania Inc
Cross-Reference Index
Part NumberManufacturer
MIL-E-17777/MIL-CUC-A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
21-043 Arcair Co (USA)
MIL-E-17777 TYPE CUC-A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5950-00-400-9102INTERCHANGEABLE
TRANSFORMER,PULSE
21043
1660-00-677-9967INTERCHANGEABLE
CONVERTER,LIQUID OXYGEN
21043-1
6625-01-012-5797INTERCHANGEABLE
TUNING UNIT,GENERATOR
21043
3439-01-022-5849INTERCHANGEABLE
ELECTRODE,CUTTING,SOLID
5841-01-101-0998INTERCHANGEABLE
PANEL,BOTTOM REAR
21043
4820-01-280-0553INTERCHANGEABLE
VALVE,PLUG
4720-01-348-4327INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
21043
5975-01-378-7616INTERCHANGEABLE
STRAP,TIE DOWN,ELECTRICAL COMPON
21043
6240-01-582-8354INTERCHANGEABLE
LAMP,FLUORESCENT
20906

Frequently Asked Questions

What is NSN 3439-00-870-9934?

NSN 3439-00-870-9934 is a Electrode,cutting,solid, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3439 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3439-00-870-9934?

NSN 3439-00-870-9934 has 3 cross-referenced part numbers: MIL-E-17777/MIL-CUC-A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 21-043 (Arcair Co), MIL-E-17777 TYPE CUC-A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 3439-00-870-9934?

There are 9 known substitutes for 3439-00-870-9934: 5950-00-400-9102, 1660-00-677-9967, 6625-01-012-5797 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-E-17777/MIL-CUC-A?

Key specifications for MIL-E-17777/MIL-CUC-A: Shape: ROUND; Nondefinitive Spec/std Data: PE;MIL CUC-A TYPE; Length: 12.000 INCHES NOMINAL12.000 INCHES NOMINAL IN; Material: CARBON NON FILLER. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3439-00-870-9934 still in active supply?

NSN 3439-00-870-9934 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.
PartsTable Design LLC · partstable.com