Description
The 3M M-409SG is the Versaflo welding helmet assembly with Speedglas ADF for the 3M Versaflo M-Series headtops. Ships in 1–2 business days; most orders arrive in 3–7 business days. Versaflo M-Series headtops: every filter, headtop, part and NIOSH approval on one page.
3M M-409SG specifications
| Item | Manufacturer data |
|---|---|
| 3M part number | M-409SG |
| System | Versaflo M-Series headtops |
| M-409SG | 7100168650 welding helmet assembly (3M Versaflo M-400 Series parts and accessories (2026); 3M Versaflo M-Series with Speedglas parts directory) |
| Fits | Versaflo PAPR and V-Series SAR |
Source: 3M Versaflo M-300 Series parts and accessories (2026); 3M Versaflo M-400 Series parts and accessories (2026); 3M Versaflo M-Series user instructions; 3M Versaflo M-Series with Speedglas parts directory; 3M.com product listings (November 2026); NIOSH Certified Equipment List (November 2026).
3M stock numbers on this page
| 3M stock number | 3M part number | 3M.com listing name | UPC | Previous stock number |
|---|---|---|---|---|
| 7100168650 | M-409SG | — | — |
Source: 3M.com product listings (November 2026); distributor product pages where 3M.com returned no card.
Versaflo M-Series headtops system data
| Item | Manufacturer data |
|---|---|
| APF (3M) | 3M Versaflo M-Series user instructions APF table: M-100/M-200/M-300 loose fitting facepiece 25; M-400 helmet 1000 (with the shroud configurations in 3M Versaflo M-Series user instructions) |
| Standards | M-300 and M-400: ANSI Z87.1-2010 (eye/face), ANSI Z89.1-2009 Type I Class G (head) (3M Versaflo M-Series user instructions) |
| Airflow | 6-15 cfm (3M Versaflo M-Series user instructions) |
| Models on site | M-305: 7000002382 (3M Versaflo M-300 Series parts and accessories (2026)) respiratory hard hat assembly with standard visor and faceseal; M-307: 7000052874 hard hat assembly with premium visor and faceseal (3M Versaflo M-300 Series parts and accessories (2026); 3M.com product listings (November 2026)) and 7100257936 (3M Versaflo M-300 Series parts and accessories (2026) current sheet); M-405: 7100009447 respiratory helmet assembly (3M Versaflo M-400 Series parts and accessories (2026)); M-407: 7000002395 (3M Versaflo M-400 Series parts and accessories (2026)); M-407SG: 7100168651 helmet assembly with Speedglas attachment, no ADF (3M Versaflo M-400 Series parts and accessories (2026); 3M Versaflo M-Series with Speedglas parts directory); M-409SG: 7100168650 welding helmet assembly (3M Versaflo M-400 Series parts and accessories (2026); 3M Versaflo M-Series with Speedglas parts directory); M-350: 7000127679 replacement head suspension; M-447: 7100289958 Nomex IIIA flame resistant outer shroud; M-449: 7100289614 leather outer shroud; M-926: 7000127689 peel-off visor covers; M-928: 7100138631; M-927: 7000052876 coated visor; M-937: 7100289594 flame resistant face seal; M-957: 7100043088 forehead comfort pad |
Source: 3M Versaflo M-300 Series parts and accessories (2026); 3M Versaflo M-400 Series parts and accessories (2026); 3M Versaflo M-Series user instructions; 3M Versaflo M-Series with Speedglas parts directory; 3M.com product listings (November 2026); NIOSH Certified Equipment List (November 2026).
NIOSH approval lines recorded for the Versaflo M-Series headtops
- TC-19C-0471..0476 "M-Series Loose Fitting Headgear with V-Series Valves, Type C, CF, Supplied-Air Respirator"; 0524/0525
- TC-21C-0866, 0868, 0870 TR-300 with M-Series Faceshield/Hardhat/Helmet; 1298..1301 TR-300+; 1307..1310 TR-600; 1318..1321 TR-800; 1282..1285 Adflo with M-101/M-201/M-301/M-401
Source: NIOSH Certified Equipment List (November 2026), manufacturer 3M Company.
Assigned protection factor
| Respirator type (OSHA Table 1) | APF |
|---|---|
| Powered air-purifying loose-fitting facepiece | 25 |
| Powered air-purifying helmet/hood (manufacturer-tested to APF 1,000) | 1000 |
| Supplied-air respirator, continuous flow, loose-fitting facepiece | 25 |
| Supplied-air respirator, continuous flow, helmet/hood (manufacturer-tested to APF 1,000) | 1000 |
Source: OSHA 29 CFR 1910.134 Table 1 (Assigned Protection Factors). The APF applies only when the respirator is used in a program that meets the standard, including fit testing of tight-fitting facepieces (29 CFR 1910.134(f)) and a cartridge change schedule (29 CFR 1910.134(d)(3)(iii)). 3M: 3M Versaflo M-Series user instructions APF table: M-100/M-200/M-300 loose fitting facepiece 25; M-400 helmet 1000 (with the shroud configurations in 3M Versaflo M-Series user instructions)
Catalog data
| Item | Manufacturer data |
|---|---|
| Material | Leather |
| Color | Black |
| Style | Respiratory Welding Helmet |
Source: Manufacturer published product data as carried in our catalog.
The 3M Versaflo M-409SG is an integrated respiratory helmet for high-heat welding and grinding, combining a leather shroud, flame-resistant helmet cover and Speedglas welding shield. Used with a NIOSH-approved air source, it covers head, eyes, face and breathing. It is about 10% lighter than the L-905SG with a larger view.
- Leather shroud and flame-resistant helmet cover
- Liftable visors
- About 10% lighter than the L-905SG
- Works with Adflo PAPR, Versaflo TR-series PAPR and supplied air
- Accepts 9100XXi auto-darkening filter
3M M-409SG questions
What system does the M-409SG belong to? The 3M Versaflo M-Series headtops.
What is the assigned protection factor with the Versaflo M-Series headtops? 3M Versaflo M-Series user instructions APF table: M-100/M-200/M-300 loose fitting facepiece 25; M-400 helmet 1000 (with the shroud configurations in 3M Versaflo M-Series user instructions).
What airflow does the Versaflo M-Series headtops deliver? 6-15 cfm (3M Versaflo M-Series user instructions).
Guides: PAPR vs air-purifying respirators · assigned protection factors · supplied-air respirators and Grade D air · all respirators by model and hazard.
