NSN 4240-01-644-2983 · NIIN 016442983 · Part number 256 173
Miller Electric Mfg. Llc · FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 3BH04
Government record, cited
NSN 4240-01-644-2983 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-644-2983. Manufacturer of record part number: 256 173.
Also searched as4240-01-644-2983 ·
4240016442983 ·
NIIN 016442983 ·
01-644-2983 ·
FSC 4240 Safety and Rescue Equipment · CAGE 3BH04 · 256 173
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: 256 173
Manufacturer: Miller Electric Mfg. Llc
General Description
The Helmet,welder's, cataloged under National Stock Number 4240-01-644-2983, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Miller Electric Mfg. Llc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4240-01-644-2983
Primary Part Number
256 173
Item Name
Helmet,welder's
FSC / FSG
4240 / 42 — Safety and Rescue Equipment
Manufacturer
Miller Electric Mfg. Llc
Status
ACTIVE
Facepiece Type
SAFETY GLASS
Color
BROWN OR GREEN MAIN BODY
Environmental Protection
HEAT RESISTANT
Fiber Material
NYLON MAIN BODY
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 4240 — Safety and Rescue Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4240-00-001-1515
4240-00-001-1515 · Item name not on file
4240-00-001-2684
4240-00-001-2684 · Item name not on file
4240-00-006-0022
HOSE,EVACUATION
4240-00-007-4576
4240-00-007-4576 · Item name not on file
4240-00-007-8182
4240-00-007-8182 · Item name not on file
4240-00-007-8183
4240-00-007-8183 · Item name not on file
4240-00-007-8184
4240-00-007-8184 · Item name not on file
4240-00-007-8185
4240-00-007-8185 · Item name not on file
Frequently Asked Questions
What is NSN 4240-01-644-2983?
NSN 4240-01-644-2983 is a Helmet,welder's, manufactured by Miller Electric Mfg. Llc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
What part numbers are listed for NSN 4240-01-644-2983?
NSN 4240-01-644-2983 has 1 manufacturer part number on file: 256 173 (Miller Electric Mfg. Llc).
What are the specifications of 256 173?
Key specifications for 256 173: Facepiece Type: SAFETY GLASS; Color: BROWN OR GREEN MAIN BODY; Special Features: VIEWING AREA 9 SQ IN.; Environmental Protection: HEAT RESISTANT. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4240-01-644-2983 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.