PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

639125Cap Assembly

Union Carbide Corp Sub of Dow Co the · NSN 6680-00-084-9292 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-084-9292 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-084-9292. Primary manufacturer part number: 639125.
Features
  • Cap Assembly — FSC 6680
  • General Characteristics Item Description: 1 EA CAP,P/N 31Z40; 1 EA BUSHING,P/N 39Z06
  • 6 verified cross-references
  • Primary manufacturer: Union Carbide Corp Sub of Dow Co the
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cap Assembly, cataloged under National Stock Number 6680-00-084-9292, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Union Carbide Corp Sub of Dow Co the. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-084-9292
Primary Part Number639125
Item NameCap Assembly
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerUnion Carbide Corp Sub of Dow Co the
StatusACTIVE
General Characteristics Item Description1 EA CAP,P/N 31Z40; 1 EA BUSHING,P/N 39Z06
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-021-85631018 INTERCHANGEABLE
Nut,plain,hexagon
Ambac International Corporation Div Ambac International
Cross-Reference Index
Part NumberManufacturer
35Y22 W/SCREW ASSY Union Carbide Corp Sub of Dow Co the (USA)
31Y13 Union Carbide Corp Sub of Dow Co the (USA)
639125 W/REG CAP ASSY L-Tec Welding and Cutting Systems (USA)
639125 PRIMARY Union Carbide Corp Sub of Dow Co the (USA)
35Y22 W/SCREW ASSY L-Tec Welding and Cutting Systems (USA)
639125 W/REG CAP ASSY Union Carbide Corp Sub of Dow Co the (USA)
Related Parts
5310-00-021-8563INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1018

Frequently Asked Questions

What is NSN 6680-00-084-9292?

NSN 6680-00-084-9292 is a Cap Assembly, manufactured by Union Carbide Corp Sub of Dow Co the, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-084-9292?

NSN 6680-00-084-9292 has 6 cross-referenced part numbers: 35Y22 W/SCREW ASSY (Union Carbide Corp Sub of Dow Co the), 31Y13 (Union Carbide Corp Sub of Dow Co the), 639125 W/REG CAP ASSY (L-Tec Welding and Cutting Systems), 639125 (Union Carbide Corp Sub of Dow Co the), 35Y22 W/SCREW ASSY (L-Tec Welding and Cutting Systems) and 1 more.

What NSN replaces 6680-00-084-9292?

There is 1 known substitute for 6680-00-084-9292: 5310-00-021-8563. Verify interchangeability with system specifications before substitution.

What are the specifications of 639125?

Key specifications for 639125: General Characteristics Item Description: 1 EA CAP,P/N 31Z40; 1 EA BUSHING,P/N 39Z06; End Item Identification: HARVICK REGULATOR NO. 430165. 2 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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