PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS90350-1Diffuser,air,aircraft Heating an

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 1660-00-919-8162 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-919-8162 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-919-8162. Primary manufacturer part number: MS90350-1.
Features
  • Diffuser,air,aircraft Heating an — FSC 1660
  • General Characteristics Item Description: METAL; 2.938 IN. NOMINAL BODY LENGTH; 1.547 IN. NOMINAL BODY HEIGHT IN
  • 2 verified cross-references
  • Primary manufacturer: Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-00-919-8162, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1660-00-919-8162
Primary Part NumberMS90350-1
Item NameDiffuser,air,aircraft Heating an
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
General Characteristics Item DescriptionMETAL; 2.938 IN. NOMINAL BODY LENGTH; 1.547 IN. NOMINAL BODY HEIGHT IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2640-00-050-1235 INTERCHANGEABLE
Cap,pneumatic Valve
5365-00-226-4519 INTERCHANGEABLE
Spacer,ring
3455-00-243-21711-1561-1375 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
New York Twist Drill Inc
5330-00-407-9439 INTERCHANGEABLE
Washer Nonmetallic
5340-00-827-8783774 INTERCHANGEABLE
Clamp,loop
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
6685-00-849-24486-01395 INTERCHANGEABLE
Thermometer,self-Indicating
Sigma Products & Mfg
4730-00-922-1899TA774 INTERCHANGEABLE
Adapter,straight,pipe to Hose
Dixon Valve & Coupling Company, Llc Div Dixon Fire
5340-01-019-8815774 INTERCHANGEABLE
Clamp
Brady United States
7690-01-089-9700774 INTERCHANGEABLE
Marker,identification
Honeywell International Inc. Dba Honeyweel Sensing & Controls
5365-01-143-5259 INTERCHANGEABLE
Spacer,shaft
Cross-Reference Index
Part NumberManufacturer
MS90350-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
774 Air-Lock, Incorporated (USA)
Related Parts
2640-00-050-1235INTERCHANGEABLE
CAP,PNEUMATIC VALVE
5365-00-226-4519INTERCHANGEABLE
SPACER,RING
3455-00-243-2171INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
1-1561-1375
5330-00-407-9439INTERCHANGEABLE
WASHER NONMETALLIC
5340-00-827-8783INTERCHANGEABLE
CLAMP,LOOP
774
6685-00-849-2448INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
6-01395
4730-00-922-1899INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
TA774
5340-01-019-8815INTERCHANGEABLE
CLAMP
774
7690-01-089-9700INTERCHANGEABLE
MARKER,IDENTIFICATION
774
5365-01-143-5259INTERCHANGEABLE
SPACER,SHAFT
3950-01-200-8346INTERCHANGEABLE
DOG ASSEMBLY
774
5360-01-224-1555INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
774-00

Frequently Asked Questions

What is NSN 1660-00-919-8162?

NSN 1660-00-919-8162 is a Diffuser,air,aircraft Heating an, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-919-8162?

NSN 1660-00-919-8162 has 2 cross-referenced part numbers: MS90350-1 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 774 (Air-Lock, Incorporated).

What NSN replaces 1660-00-919-8162?

There are 12 known substitutes for 1660-00-919-8162: 2640-00-050-1235, 5365-00-226-4519, 3455-00-243-2171 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS90350-1?

Key specifications for MS90350-1: General Characteristics Item Description: METAL; 2.938 IN. NOMINAL BODY LENGTH; 1.547 IN. NOMINAL BODY HEIGHT IN. 1 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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