USGI Chemical-Biological Mask Nonmetallic Hose Assembly (M50, M51)

A US Genuine Issue Nonmetallic Hose Assembly, specifically designed as a critical component for the M50/M51 Joint Service General Purpose Mask (JSGPM).

Manufactured by Avon Protection under part number 71012/1, this assembly connects the mask to external air or hydration systems, supporting the mask's primary role in protecting personnel from chemical, biological, radiological, and nuclear (CBRN) threats.

NSN

• 4720-01-528-9285

Features

• Material & Construction: It is a nonmetallic, flexible hose assembly designed for high durability in combat environments.
• System Compatibility: Primarily used with the M50 and M51 masks by armored combat vehicle crewman to provide respiratory and head protection.
• Protection Standards: Supports the JSGPM's capability to provide up to 24 hours of above-the-neck protection from CB agents and radioactive particles.
• Hazardous Materials: Classified as non-hazardous with no precious metals.
  Maintenance: Categorized as a non-reparable, expendable item; if the part is damaged, it is replaced at the operator or unit level.
  
• Interface Type: Designed with a close-fit 40mm (STANAG) connection.
• Mask Side: Connects directly to the M61 filter mount on the facepiece.
• System Side: Attaches to the Combat Vehicle Collective Protection System or Gas Particulate Filtration Unit (GPFU).
• Threading: Standard NATO/STANAG round thread 40 x 1/7 mm.