PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203686Plug,booster Control Valve

Lockheed Martin Corp · NSN 1650-00-185-2084 · FSC 1650 · No Item Name Available
Verified by PartsTable
NSN 1650-00-185-2084 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-185-2084. Primary manufacturer part number: 203686.
Features
  • Plug,booster Control Valve — FSC 1650
  • General Characteristics Item Description: BRASS PER QQ&B&636,0.375 IN. LG,0.3735 IN. OD IN
  • 1 verified cross-reference
  • Primary manufacturer: Lockheed Martin Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Plug,booster Control Valve, cataloged under National Stock Number 1650-00-185-2084, is classified within Federal Supply Class 1650 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 1 verified specification, 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1650-00-185-2084
Primary Part Number203686
Item NamePlug,booster Control Valve
FSC / FSG1650 / 16 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
General Characteristics Item DescriptionBRASS PER QQ&B&636,0.375 IN. LG,0.3735 IN. OD IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-050-3345 INTERCHANGEABLE
Nut,self-Locking,hexagon
6625-00-531-4301 INTERCHANGEABLE
Indicator,digital Display
Cross-Reference Index
Part NumberManufacturer
203686 PRIMARY Lockheed Martin Corp (USA)
Related Parts
5310-00-050-3345INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
6625-00-531-4301INTERCHANGEABLE
INDICATOR,DIGITAL DISPLAY

Frequently Asked Questions

What is NSN 1650-00-185-2084?

NSN 1650-00-185-2084 is a Plug,booster Control Valve, manufactured by Lockheed Martin Corp, classified under FSC 1650 (No Item Name Available). Status: active.

What are the part numbers for NSN 1650-00-185-2084?

NSN 1650-00-185-2084 has 1 cross-referenced part number: 203686 (Lockheed Martin Corp).

What NSN replaces 1650-00-185-2084?

There are 2 known substitutes for 1650-00-185-2084: 5310-00-050-3345, 6625-00-531-4301. Verify interchangeability with system specifications before substitution.

What are the specifications of 203686?

Key specifications for 203686: General Characteristics Item Description: BRASS PER QQ&B&636,0.375 IN. LG,0.3735 IN. OD IN. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com