PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52911Respirator,air Filtering

3m Company Div Oh&esd · NSN 4240-01-334-1188 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-334-1188 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-334-1188. Primary manufacturer part number: 52911.
Features
  • Respirator,air Filtering — FSC 4240
  • Accessory Components and Quantity: 2091 HEPA FILTER AND 502 ADAPTOR
  • Mask Type: HALF FACEPIECE
  • Filter Replaceability: REPLACEABLE
  • Approval Designator: ERR-060
  • Furnished Filter Type and Quantity: 2 FILTER PAD
  • Filter Type: FILTER PAD
  • 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 4240-01-334-1188, 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
NSN4240-01-334-1188
Primary Part Number52911
Item NameRespirator,air Filtering
FSC / FSG4240 / 42 — No Item Name Available
Manufacturer3m Company Div Oh&esd
StatusACTIVE
Accessory Components and Quantity2091 HEPA FILTER AND 502 ADAPTOR
Mask TypeHALF FACEPIECE
Filter ReplaceabilityREPLACEABLE
Approval DesignatorERR-060
Furnished Filter Type and Quantity2 FILTER PAD
Filter TypeFILTER PAD
Mask Filter Quantity2
Criticality Code JustificationFEAT
Protection for Which Filter Is DesignedORGANIC VAPOR/P100
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2940-00-360-7962146541 INTERCHANGEABLE
Cover,fluid Filter
Honeywell International Inc Dba Honeywell Div Consumer Products Group
5950-00-392-6710SM-C-178688 INTERCHANGEABLE
Transformer,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5306-00-423-81940044249-1 INTERCHANGEABLE
Bolt,machine
New Holland Construction
1420-00-649-9397 INTERCHANGEABLE
Element Assy
5935-00-804-5815 INTERCHANGEABLE
Adapter,connector
5935-00-829-87255291-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
6605-00-865-8785 INTERCHANGEABLE
Indicator,navigational
4730-01-009-7507 INTERCHANGEABLE
Strainer,sediment
5998-01-020-1650524-1 INTERCHANGEABLE
Circuit Card Assembly
Marc Alan Group the, Inc
5955-01-046-265652-4-1 INTERCHANGEABLE
Crystal Unit,quartz
Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled
Cross-Reference Index
Part NumberManufacturer
52911 3m Company Div Oh&esd (USA)
5241 3m Company Div Oh&esd (USA)
Related Parts
2940-00-360-7962INTERCHANGEABLE
COVER,FLUID FILTER
146541
5950-00-392-6710INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
SM-C-178688
5306-00-423-8194INTERCHANGEABLE
BOLT,MACHINE
0044249-1
1420-00-649-9397INTERCHANGEABLE
ELEMENT ASSY
5935-00-804-5815INTERCHANGEABLE
ADAPTER,CONNECTOR
5935-00-829-8725INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5291-1
6605-00-865-8785INTERCHANGEABLE
INDICATOR,NAVIGATIONAL
4730-01-009-7507INTERCHANGEABLE
STRAINER,SEDIMENT
5998-01-020-1650INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
524-1
5955-01-046-2656INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
52-4-1
4730-01-057-7268INTERCHANGEABLE
ELBOW,PIPE TO HOSE
1730-01-101-4333INTERCHANGEABLE
LEVER ASSEMBLY,BRAK
01208700

Frequently Asked Questions

What is NSN 4240-01-334-1188?

NSN 4240-01-334-1188 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 4240-01-334-1188?

NSN 4240-01-334-1188 has 2 cross-referenced part numbers: 52911 (3m Company Div Oh&esd), 5241 (3m Company Div Oh&esd).

What NSN replaces 4240-01-334-1188?

There are 12 known substitutes for 4240-01-334-1188: 2940-00-360-7962, 5950-00-392-6710, 5306-00-423-8194 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52911?

Key specifications for 52911: Accessory Components and Quantity: 2091 HEPA FILTER AND 502 ADAPTOR; Special Features: SOLE SOURCE REQUIRED BY STATUTE 6.302; SIZE MEDIUM; Mask Type: HALF FACEPIECE; Filter Replaceability: REPLACEABLE. 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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