PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B216Flap,inhalation

Pro-Tech Respirators Inc · NSN 4240-01-250-3627 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-250-3627 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-250-3627. Primary manufacturer part number: B216.
Features
  • Flap,inhalation — FSC 4240
  • General Characteristics Item Description: SOLE SOURCE REQUIRED BY STATUTE 6.302
  • Criticality Code Justification: TEXT
  • 1 verified cross-reference
  • Primary manufacturer: Pro-Tech Respirators Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Flap,inhalation, cataloged under National Stock Number 4240-01-250-3627, 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 Pro-Tech Respirators Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN4240-01-250-3627
Primary Part NumberB216
Item NameFlap,inhalation
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerPro-Tech Respirators Inc
StatusACTIVE
General Characteristics Item DescriptionSOLE SOURCE REQUIRED BY STATUTE 6.302
Criticality Code JustificationTEXT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3455-00-224-365545545 INTERCHANGEABLE
Cutter,milling,metal Slitting
Kennametal Inc. Div Kennametal Industrial Products Group
4820-00-262-7017FIG B-216 SZ 1/2 IN INTERCHANGEABLE
Valve,angle
Stockham Valves and Fittings Inc
4820-00-287-2768 INTERCHANGEABLE
Valve,angle
4920-00-946-1092B216 INTERCHANGEABLE
Adapter,oil Cooler
Lockheed Martin Corp
4820-01-225-8910B216-1 1/2IN INTERCHANGEABLE
Valve,angle
Stockham Valves and Fittings Inc
4820-01-344-8987B-216 2-1/2IN INTERCHANGEABLE
Valve,angle
Stockham Valves and Fittings Inc
4820-01-345-0358B-216 PIECE 10 2-1/2IN INTERCHANGEABLE
Stem,fluid Valve
Stockham Valves and Fittings Inc
Cross-Reference Index
Part NumberManufacturer
B216 Pro-Tech Respirators Inc (USA)
Related Parts
3455-00-224-3655INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
45545
4820-00-262-7017INTERCHANGEABLE
VALVE,ANGLE
FIG B-216 SZ 1/2 IN
4820-00-287-2768INTERCHANGEABLE
VALVE,ANGLE
4920-00-946-1092INTERCHANGEABLE
ADAPTER,OIL COOLER
B216
4820-01-225-8910INTERCHANGEABLE
VALVE,ANGLE
B216-1 1/2IN
4820-01-344-8987INTERCHANGEABLE
VALVE,ANGLE
B-216 2-1/2IN
4820-01-345-0358INTERCHANGEABLE
STEM,FLUID VALVE
B-216 PIECE 10 2-1/2IN

Frequently Asked Questions

What is NSN 4240-01-250-3627?

NSN 4240-01-250-3627 is a Flap,inhalation, manufactured by Pro-Tech Respirators Inc, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-250-3627?

NSN 4240-01-250-3627 has 1 cross-referenced part number: B216 (Pro-Tech Respirators Inc).

What NSN replaces 4240-01-250-3627?

There are 7 known substitutes for 4240-01-250-3627: 3455-00-224-3655, 4820-00-262-7017, 4820-00-287-2768 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B216?

Key specifications for B216: General Characteristics Item Description: SOLE SOURCE REQUIRED BY STATUTE 6.302; End Item Identification: PRO-TECH RESPIRATORS INC MODELS 1482,1585 AND 1694 RESPIRATORS; Criticality Code Justification: TEXT. 3 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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