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Technical Data Sheet
PartsTable / MRO / 138125
138125 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SWITCH,FLOW is a the manufacturer industrial component. Key specifications include bulb_type: PLAIN RIGID, case_diameter: 2.500 INCHES NOMINAL IN, terminal_type: WIRE LEAD, overall_length: 5.359 INCHES MINIMUM AND 5.391 INCHES MAXIMUM IN, mounting_method: LINE AND THREADED BUSHING, bulb_overall_length: 2.580 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-408-2722, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 138125
NSN: 6685-00-408-2722
FSC: 6685
CAGE: 61349 — AMETEK, INC. DIV AEROSPACE & DEFENSE (USA)
SPECIFICATIONS
bulb_typePLAIN RIGID
bulb_quantity1
case_diameter2.500 INCHES NOMINAL IN
terminal_typeWIRE LEAD
overall_length5.359 INCHES MINIMUM AND 5.391 INCHES MAXIMUM IN
mounting_methodLINE AND THREADED BUSHING
bulb_overall_length2.580 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES SINGLE THREADED BUSHING IN
bulb_connection_typeTHREADED
active_portion_length2.020 INCHES NOMINAL IN
contact_adjustabilityACTUATION POINT NOT ADJUSTABLE
active_portion_diameter0.440 INCHES NOMINAL IN
NSN6685-00-408-2722
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,FLOW TITLE COMPONENT PN 138125 MFR SWITCH,FLOW
KEY FEATURES
•
BULB TYPE: PLAIN RIGID
•
BULB QUANTITY: 1
•
CASE DIAMETER: 2.500 INCHES NOMINAL IN
•
ACTIVE PORTION DIAMETER: 0.440 INCHES NOMINAL IN
•
BULB CONNECTION TYPE: THREADED
•
ACTIVE PORTION LENGTH: 2.020 INCHES NOMINAL IN
•
BULB OVERALL LENGTH: 2.580 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BULB TYPEPLAIN RIGID
BULB QUANTITY1
CASE DIAMETER2.500 INCHES NOMINAL IN
ACTIVE PORTION DIAMETER0.440 INCHES NOMINAL IN
BULB CONNECTION TYPETHREADED
ACTIVE PORTION LENGTH2.020 INCHES NOMINAL IN
BULB OVERALL LENGTH2.580 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
FS-200Interchangeable
interchangeable cross-reference
interchangeable
FS200M-SB CLOSE 15GPInterchangeable
interchangeable cross-reference
interchangeable
138125Interchangeable
interchangeable cross-reference
interchangeable
30154KInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 138125?
138125 is a SWITCH,FLOW. It is classified as a MRO (MRO_GENERAL).
What parts can replace 138125?
There are 4 known substitutes for 138125: FS-200, FS200M-SB CLOSE 15GP, 138125 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 138125?
138125 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-408-2722. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026