PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

250BController,pressure

Mks Inc. · NSN 6685-01-373-2525 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-373-2525 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-373-2525. Primary manufacturer part number: 250B.
Features
  • Controller,pressure — FSC 6685
  • General Characteristics Item Description: SINGLE GAS CONTROLLER FOR PRESSURE OR FLOW CONTROL; MANUAL/AUTO/REMOTE OP.; PHASE LEAD/LOOP GAIN ADJUSTMENTS FOR OPTIMIZED CLOSED LOOP CONTROL; ANALOG DISPLAY; W/ POWER SUPPLY
  • 1 verified cross-reference
  • Primary manufacturer: Mks Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Controller,pressure, cataloged under National Stock Number 6685-01-373-2525, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Mks Inc.. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-373-2525
Primary Part Number250B
Item NameController,pressure
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerMks Inc.
StatusACTIVE
General Characteristics Item DescriptionSINGLE GAS CONTROLLER FOR PRESSURE OR FLOW CONTROL; MANUAL/AUTO/REMOTE OP.; PHASE LEAD/LOOP GAIN ADJUSTMENTS FOR OPTIMIZED CLOSED LOOP CONTROL; ANALOG DISPLAY; W/ POWER SUPPLY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4310-00-035-7512111023PC252 INTERCHANGEABLE
Liner,cylinder
Curtiss-Wright Electro-Mechanical Corporation Div Epd
6625-00-144-3070ZM61U INTERCHANGEABLE
Bridge,capacitance-Inductance-Re
Joint Electronics Type Designation System
5360-00-292-424104751-250B-375 INTERCHANGEABLE
Spring,helical,compression
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
6625-00-435-5470 INTERCHANGEABLE
Bridge,impedance
5961-00-980-7520 INTERCHANGEABLE
Transistor
6625-00-987-6722250B INTERCHANGEABLE
Detecting Element,directional Co
Bird Electronic Corporation Div Bird Electronic Corp
Cross-Reference Index
Part NumberManufacturer
250B PRIMARY Mks Inc. (USA)
Related Parts
4310-00-035-7512INTERCHANGEABLE
LINER,CYLINDER
111023PC252
6625-00-144-3070INTERCHANGEABLE
BRIDGE,CAPACITANCE-INDUCTANCE-RE
ZM61U
5360-00-292-4241INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
04751-250B-375
6625-00-435-5470INTERCHANGEABLE
BRIDGE,IMPEDANCE
5961-00-980-7520INTERCHANGEABLE
TRANSISTOR
6625-00-987-6722INTERCHANGEABLE
DETECTING ELEMENT,DIRECTIONAL CO
250B

Frequently Asked Questions

What is NSN 6685-01-373-2525?

NSN 6685-01-373-2525 is a Controller,pressure, manufactured by Mks Inc., classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-373-2525?

NSN 6685-01-373-2525 has 1 cross-referenced part number: 250B (Mks Inc.).

What NSN replaces 6685-01-373-2525?

There are 6 known substitutes for 6685-01-373-2525: 4310-00-035-7512, 6625-00-144-3070, 5360-00-292-4241 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 250B?

Key specifications for 250B: General Characteristics Item Description: SINGLE GAS CONTROLLER FOR PRESSURE OR FLOW CONTROL; MANUAL/AUTO/REMOTE OP.; PHASE LEAD/LOOP GAIN ADJUSTMENTS FOR OPTIMIZED CLOSED LOOP CONTROL; ANALOG DISPLAY; W/ POWER SUPPLY. 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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