PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

53911Respirator,air Filtering

3m Company Div Oh&esd · NSN 4240-01-334-1187 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-334-1187 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-334-1187. Primary manufacturer part number: 53911.
Features
  • Respirator,air Filtering — FSC 4240
  • Mask Type: HALF FACEPIECE
  • Approval Designator: ERR-060
  • Protection for Which Filter Is Designed: ORGANIC VAPOR/P100
  • Criticality Code Justification: FEAT
  • Filter Replaceability: REPLACEABLE
  • Accessory Components and Quantity: 2091 HEPA FILTER AND 502 ADAPTOR
  • Mask Filter Quantity: 2
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Respirator,air Filtering, cataloged under National Stock Number 4240-01-334-1187, 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 3m Company Div Oh&esd. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-334-1187
Primary Part Number53911
Item NameRespirator,air Filtering
FSC / FSG4240 / 42 — No Item Name Available
Manufacturer3m Company Div Oh&esd
StatusACTIVE
Mask TypeHALF FACEPIECE
Approval DesignatorERR-060
Protection for Which Filter Is DesignedORGANIC VAPOR/P100
Criticality Code JustificationFEAT
Filter ReplaceabilityREPLACEABLE
Accessory Components and Quantity2091 HEPA FILTER AND 502 ADAPTOR
Mask Filter Quantity2
Furnished Filter Type and Quantity2 FILTER PAD
Filter TypeFILTER PAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6515-00-363-880014-2415 INTERCHANGEABLE
Scissors,bandage
Teleflex-Ct- Devices Inc Dba Teleflex Medical
3020-00-447-21925341 INTERCHANGEABLE
Gear,spur
Eaton Corp Transmission Div
3020-00-447-545564893H INTERCHANGEABLE
Gear,spur
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
1670-00-568-533460A113E4-1 INTERCHANGEABLE
Harness,personnel Parachute,back
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
5910-00-570-0348535692-1 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Raytheon Company Dba Raytheon
9540-00-595-7553 INTERCHANGEABLE
Channel,structural
6105-00-608-0533 INTERCHANGEABLE
Motor,direct Current
5985-00-786-79427126393P2 INTERCHANGEABLE
Dummy Load,electrical
Lockheed Martin Corporation Div Rms
5975-00-813-903011040861-1 INTERCHANGEABLE
Box Connector,electrical
Us Army Aviation and Missile Command
5935-00-819-26495391-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
Cross-Reference Index
Part NumberManufacturer
53911 3m Company Div Oh&esd (USA)
5341 3m Company Div Oh&esd (USA)
Related Parts
6515-00-363-8800INTERCHANGEABLE
SCISSORS,BANDAGE
14-2415
3020-00-447-2192INTERCHANGEABLE
GEAR,SPUR
5341
3020-00-447-5455INTERCHANGEABLE
GEAR,SPUR
64893H
1670-00-568-5334INTERCHANGEABLE
HARNESS,PERSONNEL PARACHUTE,BACK
60A113E4-1
5910-00-570-0348INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
535692-1
9540-00-595-7553INTERCHANGEABLE
CHANNEL,STRUCTURAL
6105-00-608-0533INTERCHANGEABLE
MOTOR,DIRECT CURRENT
5985-00-786-7942INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
7126393P2
5975-00-813-9030INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
11040861-1
5935-00-819-2649INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5391-1
5950-01-122-7283INTERCHANGEABLE
TRANSFORMER,POWER
3146154
4820-01-127-2559INTERCHANGEABLE
VALVE,GLOBE
803-2177934-B116AF

Frequently Asked Questions

What is NSN 4240-01-334-1187?

NSN 4240-01-334-1187 is a Respirator,air Filtering, manufactured by 3m Company Div Oh&esd, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-334-1187?

NSN 4240-01-334-1187 has 2 cross-referenced part numbers: 53911 (3m Company Div Oh&esd), 5341 (3m Company Div Oh&esd).

What NSN replaces 4240-01-334-1187?

There are 12 known substitutes for 4240-01-334-1187: 6515-00-363-8800, 3020-00-447-2192, 3020-00-447-5455 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 53911?

Key specifications for 53911: Mask Type: HALF FACEPIECE; Approval Designator: ERR-060; Protection for Which Filter Is Designed: ORGANIC VAPOR/P100; Criticality Code Justification: FEAT. 10 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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