PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

88103Regulator,breathing Gas Pressure

Mine Safety Appliances Company · NSN 4240-01-556-1785 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-556-1785 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-556-1785. Primary manufacturer part number: 88103.
Features
  • Regulator,breathing Gas Pressure — FSC 4240
  • Pressure Gage: NOT INCLUDED
  • Installation Design: PORTABLE
  • 1 verified cross-reference
  • Primary manufacturer: Mine Safety Appliances Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Regulator,breathing Gas Pressure, cataloged under National Stock Number 4240-01-556-1785, 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 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-556-1785
Primary Part Number88103
Item NameRegulator,breathing Gas Pressure
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerMine Safety Appliances Company
StatusACTIVE
Pressure GageNOT INCLUDED
Installation DesignPORTABLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3010-00-349-273088103 INTERCHANGEABLE
Gear Assembly,speed Decreaser
Cae Usa Inc.
5995-00-772-88137728813 INTERCHANGEABLE
Cable Assembly,special Purpose,e
U S Army Tank Automotive Command Amsta-Im-Mm
4730-01-359-539089020 FIND 21 INTERCHANGEABLE
Manifold Assembly,hydraulic
Tri-Tec Manufacturing Llc
3040-01-417-271288103-1 INTERCHANGEABLE
Control Assembly,push-Pull
Hdt Expeditionary Systems Inc
4240-01-491-0338 INTERCHANGEABLE
Demand Reg.valve
Cross-Reference Index
Part NumberManufacturer
88103 PRIMARY Mine Safety Appliances Company (USA)
Related Parts
3010-00-349-2730INTERCHANGEABLE
GEAR ASSEMBLY,SPEED DECREASER
88103
5995-00-772-8813INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
7728813
4730-01-359-5390INTERCHANGEABLE
MANIFOLD ASSEMBLY,HYDRAULIC
89020 FIND 21
3040-01-417-2712INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
88103-1
4240-01-491-0338INTERCHANGEABLE
DEMAND REG.VALVE

Frequently Asked Questions

What is NSN 4240-01-556-1785?

NSN 4240-01-556-1785 is a Regulator,breathing Gas Pressure, manufactured by Mine Safety Appliances Company, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-556-1785?

NSN 4240-01-556-1785 has 1 cross-referenced part number: 88103 (Mine Safety Appliances Company).

What NSN replaces 4240-01-556-1785?

There are 5 known substitutes for 4240-01-556-1785: 3010-00-349-2730, 5995-00-772-8813, 4730-01-359-5390 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 88103?

Key specifications for 88103: Part Name Assigned by Controlling Agency: DEMAND REGUALTOR,LOW PRESSURE TYPE; Pressure Gage: NOT INCLUDED; Special Features: INCLUDES ADAPTER AND BUDDY TEE CONNECTOR; Installation Design: PORTABLE. 4 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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