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B21189-4 — B21189-4

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

B21189-4: B21189-4.

The B21189-4 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 6685-00-804-2032, 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
B21189-4
NSN: 6685-00-804-2032
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
CAGE: 94833 — KECO INDUSTRIES, INC. (USA)
SPECIFICATIONS
Part NumberB21189-4
NSN6685-00-804-2032
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available B21189-4 TITLE COMPONENT PN B21189-4 MFR B21189-4
KEY FEATURES
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FLEXIBLE TUBE LENGTH: 120.000 INCHES NOMINAL IN
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 FLANGE
•
BULB OVERALL LENGTH: 2.700 INCHES NOMINAL IN
•
BULB TYPE: FLEXIBLE CAPILLARY
•
ACTIVE PORTION DIAMETER: 0.440 INCHES NOMINAL IN
•
BULB CONNECTION TYPE: UNION
•
DIAL DIAMETER: 2.500 INCHES NOMINAL IN
•
INDICATOR CONNECTION METHOD: FLEXIBLE TUBE
TECHNICAL CHARACTERISTICS
FLEXIBLE TUBE LENGTH120.000 INCHES NOMINAL IN
MOUNTING FACILITY TYPE AND QUANTITY1 FLANGE
BULB OVERALL LENGTH2.700 INCHES NOMINAL IN
BULB TYPEFLEXIBLE CAPILLARY
ACTIVE PORTION DIAMETER0.440 INCHES NOMINAL IN
BULB CONNECTION TYPEUNION
DIAL DIAMETER2.500 INCHES NOMINAL IN
INDICATOR CONNECTION METHODFLEXIBLE TUBE
STYLE DESIGNATORFRONT FLANGED AND HINGED RING, BACK CONNECTION
CASE DIAMETER3.530 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 6
21189-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
21189-4Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
21189-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
93Reference document
Same NSN cross-reference
Reference document — Secondary reference
X5-20433Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
21189-3Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B21189-4?
B21189-4 is a B21189-4.
What parts can replace B21189-4?
There are 6 known substitutes for B21189-4: 21189-2, 21189-4, 21189-1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B21189-4?
B21189-4 is cataloged in the U.S. Government catalog under NSN 6685-00-804-2032. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.