PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

247531Helmet,welder's

Miller Electric Mfg. Llc · NSN 4240-01-632-2400 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-632-2400 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-632-2400. Primary manufacturer part number: 247531.
Features
  • Helmet,welder's — FSC 4240
  • Supplementary Features: HEPA AIR FILTER - HEXAVALENT CHROMIUM METAL,STAINLESS STEEL;GALVANIZED STEEL,STEEL/MANGANESE ALLOYS,ALUMINUM,CADMIUM AND LEAD FUMES;LITHIUM ION BATTERIES
  • 2 verified cross-references
  • Primary manufacturer: Miller Electric Mfg. Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Helmet,welder's, cataloged under National Stock Number 4240-01-632-2400, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Miller Electric Mfg. Llc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 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
NSN4240-01-632-2400
Primary Part Number247531
Item NameHelmet,welder's
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerMiller Electric Mfg. Llc
StatusACTIVE
Supplementary FeaturesHEPA AIR FILTER - HEXAVALENT CHROMIUM METAL,STAINLESS STEEL;GALVANIZED STEEL,STEEL/MANGANESE ALLOYS,ALUMINUM,CADMIUM AND LEAD FUMES;LITHIUM ION BATTERIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6550-00-890-1965 INTERCHANGEABLE
Antigen,proteus Ox K
Cross-Reference Index
Part NumberManufacturer
247531 PRIMARY Miller Electric Mfg. Llc (USA)
247531 Miller Electric Mfg. Co. (USA)
Related Parts
6550-00-890-1965INTERCHANGEABLE
ANTIGEN,PROTEUS OX K

Frequently Asked Questions

What is NSN 4240-01-632-2400?

NSN 4240-01-632-2400 is a Helmet,welder's, manufactured by Miller Electric Mfg. Llc, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-632-2400?

NSN 4240-01-632-2400 has 2 cross-referenced part numbers: 247531 (Miller Electric Mfg. Llc), 247531 (Miller Electric Mfg. Co.).

What NSN replaces 4240-01-632-2400?

There is 1 known substitute for 4240-01-632-2400: 6550-00-890-1965. Verify interchangeability with system specifications before substitution.

What are the specifications of 247531?

Key specifications for 247531: Part Name Assigned by Controlling Agency: PAPR -POWERED AIR PURIFYING REPERATOR- WITH TITANIUM 9400I HELMET; Supplementary Features: HEPA AIR FILTER - HEXAVALENT CHROMIUM METAL,STAINLESS STEEL;GALVANIZED STEEL,STEEL/MANGANESE ALLOYS,ALUMINUM,CADMIUM AND LEAD FUMES;LITHIUM ION BATTERIES. 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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