PartsTable TECHNICAL DATA SHEET
NSN 3431-01-352-1491Government record, cited

Short Back Cap3431-01-352-1491

NSN 3431-01-352-1491 · NIIN 013521491 · Part number 57Y04
Weldcraft Customer Service · FSC 3431 — Electric Arc Welding Equipment · FSG 34 — Metalworking Machinery (continued) · CAGE 64173
Government record, cited
NSN 3431-01-352-1491 — this item is cataloged by the U.S. Government under National Stock Number 3431-01-352-1491. Manufacturer of record part number: 57Y04.
Also searched as  3431-01-352-1491 · 3431013521491 · NIIN 013521491 · 01-352-1491 · FSC 3431 Electric Arc Welding Equipment · CAGE 64173 · 57Y04
Nearby stock numbers  ·
Features
  • Short Back Cap — FSC 3431
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Weldcraft Customer Service
Identification
  • NSN: 3431-01-352-1491
  • NIIN: 013521491
  • FSC: 3431 — Electric Arc Welding Equipment
  • FSG: 34 — Metalworking Machinery (continued)
  • Primary part number: 57Y04
  • Manufacturer: Weldcraft Customer Service
General Description

The Short Back Cap, cataloged under National Stock Number 3431-01-352-1491, is classified within Federal Supply Class 3431 (Electric Arc Welding Equipment) of the Metalworking Machinery (continued) group. The manufacturer of record is Weldcraft Customer Service. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3431-01-352-1491
Primary Part Number57Y04
Item NameShort Back Cap
FSC / FSG3431 / 34 — Electric Arc Welding Equipment
ManufacturerWeldcraft Customer Service
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
57Y04 Jo-Jon, Inc Dba Specialty Welding Supply Div Jo-Jon, Incorporated (USA)
57Y04 PRIMARY Weldcraft Customer Service (USA)

Frequently Asked Questions

What is NSN 3431-01-352-1491?

NSN 3431-01-352-1491 is a Short Back Cap, manufactured by Weldcraft Customer Service, classified under FSC 3431, Electric Arc Welding Equipment. Status: active.

What part numbers are listed for NSN 3431-01-352-1491?

NSN 3431-01-352-1491 has 2 manufacturer part numbers on file: 57Y04 (Jo-Jon, Inc Dba Specialty Welding Supply Div Jo-Jon, Incorporated), 57Y04 (Weldcraft Customer Service).

What are the specifications of 57Y04?

Key specifications for 57Y04: Special Features: INCLUDES O RING; End Item Identification: WP18 WELDING TORCH,CAGE 64713. 0 specifications are documented in the U.S. Government catalog.

Is NSN 3431-01-352-1491 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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