Self-Contain Breathing Apparatus

SRU-42/P
(NSN) National Stock Number
4240-01-542-8156
Federal Supply Classification
4240 Safety and Rescue Equipment
Item Name Code
21123
Schedule B Code
-
Summary

Helicopters end item identification, 10.500 inches nominal unpackaged unit length, 2.500 inches nominal unpackaged unit width, 2.500 inches nominal unpackaged unit height, agav criticality code justification, sea w/lv2, w/ 1.5 cyl breathing appratus self contained part name assigned by controlling agency

DAC HCC DMIL RNCC
4 - - 5
RNVC SADC MSDS RNAAC
1 - - KE
Identification

A portable respiratory protective device, which supplies respirable air to the wearer from self-contained air cyclinder(s) without recourse to atmospheric air supply. It may have breathing bags. Excludes:items which use chemicals to generate oxygen, and respirator outfit.

INC FIIG Concept Condition
21123 A23800 - 2
Specifications
End Item Identification
helicopters
Details The national stock number or the identification information of the end equipment for which the item is a part.
Unpackaged Unit Length
10.500 inches nominal
Details A measurement of the longest dimension of an item unencumbered by packaging or packing, in distinction from width.
Unpackaged Unit Width
2.500 inches nominal
Details A measurement taken at right angles to the length of an item unencumbered by packaging or packing,in distinction from thickness.
Unpackaged Unit Height
2.500 inches nominal
Details A measurement from the bottom to the top of an item unencumbered by packaging or packing,in distinction from depth.
Criticality Code Justification
agav
Details The master requirement codes of those requirements which are technically critical by reason of tolerance,fit,performance,or other characteristics which affect identification of the item.
Part Name Assigned By Controlling Agency
sea w/lv2, w/ 1.5 cyl breathing appratus self contained
Details The name assigned to the item by the government agency or commercial organization controlling the design of the item.
Supplementary Features
item consists of 1.5 cubic foot aluminum cylinder, annodized brass first stage regulator, a rubber 20 inch hose, and a hard plastic second stage regulator with a silicone mouthpiece; weight 2.7 lbs
Details Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
108445 94120 1 - 3 2 - KE
1586AS400-1 30003 1 - 1 2 - KE
SRU-40B/P 07878 4 - 5 9 - KE
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
P A A -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
32310 - G -
RVC WCC TCC SHC
- 796 Z 9
Price and Availability Quote

Send us a quick request for quote using the form below:

Provided with every order

Order with confidence, we are a valued certified supplier serving customers in the military and aerospace industries.

  • Counterfeit Parts Prevention
  • 100% Product Inspections
  • 7 Year Record Retention
  • On Time Delivery
  • HAZMAT Certified
  • Worldwide Shipping
FAQs
Frequently asked questions for NSN 4240-01-542-8156
What is the NIIN of the NSN 4240-01-542-8156?
The National Item Identification Number (NIIN) of the NSN 4240-01-542-8156 is 01-542-8156
When the NSN 4240-01-542-8156 was assigned to the Federal Catalog?
It was assigned 18 years ago, on Mon, Aug 21, 2006
Does the NSN 4240-01-542-8156 contain any precious metals?
Does not contain precious metal
Does the NSN 4240-01-542-8156 contain any hazardous material?
No information in HMIRS
What is the ESD classification of NSN 4240-01-542-8156?
No known electrostatic discharge

Can't Find It

If you didn't find what you need, don't worry, we're here to help! Our team is ready to help you find exactly what you need. Click below to contact us.

Similar Products
Who we are?

At our core, we specialize in sourcing and supplying high-quality NSN (National Stock Number) parts to industries that demand precision and reliability.

From aerospace and defense to manufacturing and logistics, we provide the essential components that keep critical systems running.

Contact
350 Tenth Ave
San Diego, CA, 92101
United States
© 2025 National Stock Number (NSN) Parts Store, Inc. All rights reserved.
Made in USA