PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

95021Mask,air Line

Mine Safety Appliances Company · NSN 4240-01-022-1541 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-022-1541 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-022-1541. Primary manufacturer part number: 95021.
Features
  • Mask,air Line — FSC 4240
  • Intake Tube Length: 25.000 INCHES NOMINAL IN
  • Harness: INCLUDED
  • Design Type: MOUTH AND NOSE
  • Oxygen System Type: DEMAND FLOW
  • 3 verified cross-references
  • Primary manufacturer: Mine Safety Appliances Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Mask,air Line, cataloged under National Stock Number 4240-01-022-1541, 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 Mine Safety Appliances Company. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-022-1541
Primary Part Number95021
Item NameMask,air Line
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerMine Safety Appliances Company
StatusACTIVE
Intake Tube Length25.000 INCHES NOMINAL IN
HarnessINCLUDED
Design TypeMOUTH AND NOSE
Oxygen System TypeDEMAND FLOW
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5950-00-219-8935 INTERCHANGEABLE
Transformer,power
1620-00-344-050395021 INTERCHANGEABLE
Fitting,main Landin
Northrop Grumman Systems Corporation
6620-01-395-2960EC376 INTERCHANGEABLE
Gage,pressure,dial Indicating
Everllence Usa Inc.
5920-01-406-4149C95021 INTERCHANGEABLE
Mat,electrostatic Discharging
Global Industrial Company
4730-01-478-4687LSCP270046-13 INTERCHANGEABLE
Plug,tube Fitting,threaded
General Dynamics Land Systems Inc.
6532-01-626-066095021 INTERCHANGEABLE
Gown,operating,surgical
Kimberly Clark
5305-01-664-834895021 INTERCHANGEABLE
Screw,cap,hexagon Head
Fastenal Company Div Stct
Cross-Reference Index
Part NumberManufacturer
C-95021 Zf Industrieantriebe Witten Gmbh (DEU)
01-95021 Mine Safety Appliances Company (USA)
95021 PRIMARY Mine Safety Appliances Company (USA)
Related Parts
5950-00-219-8935INTERCHANGEABLE
TRANSFORMER,POWER
1620-00-344-0503INTERCHANGEABLE
FITTING,MAIN LANDIN
95021
6620-01-395-2960INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
EC376
5920-01-406-4149INTERCHANGEABLE
MAT,ELECTROSTATIC DISCHARGING
C95021
4730-01-478-4687INTERCHANGEABLE
PLUG,TUBE FITTING,THREADED
LSCP270046-13
6532-01-626-0660INTERCHANGEABLE
GOWN,OPERATING,SURGICAL
95021
5305-01-664-8348INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
95021

Frequently Asked Questions

What is NSN 4240-01-022-1541?

NSN 4240-01-022-1541 is a Mask,air Line, manufactured by Mine Safety Appliances Company, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-022-1541?

NSN 4240-01-022-1541 has 3 cross-referenced part numbers: C-95021 (Zf Industrieantriebe Witten Gmbh), 01-95021 (Mine Safety Appliances Company), 95021 (Mine Safety Appliances Company).

What NSN replaces 4240-01-022-1541?

There are 7 known substitutes for 4240-01-022-1541: 5950-00-219-8935, 1620-00-344-0503, 6620-01-395-2960 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 95021?

Key specifications for 95021: Intake Tube Length: 25.000 INCHES NOMINAL IN; Harness: INCLUDED; Special Features: CLEAR SINGLE LENS FACEPIECE W/OVERHEAD HARNESS,28.000 IN. FLEXIBLE BREATHING TUBE,DEMAND FLOW,QUICK DISCONNECT,BELT MOUNTED REGULATOR W/TWO CONNECTIONS IN; Design Type: MOUTH AND NOSE. 5 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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