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39B — SWITCH,INTERLOCK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

39B: SWITCH,INTERLOCK.

The SWITCH,INTERLOCK is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.091 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S) AND FLANGE, outside_diameter: 0.685 INCHES NOMINAL IN, style_designator: SOLID, media_for_which_designed: AIR. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-119-3254, 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
39B
NSN: 4820-00-119-3254
NIINs: 001193254, 002012306, 010068030, 011526115
FSC: 4820 — Valves, Nonpowered
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL
overall_height0.091 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S) AND FLANGE
outside_diameter0.685 INCHES NOMINAL IN
style_designatorSOLID
media_for_which_designedAIR
terminal_type_and_quantity2 SCREW
NSN4820-00-119-3254
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 39B · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OUTSIDE DIAMETER: 0.685 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SOLID
•
MEDIA FOR WHICH DESIGNED: AIR
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.091 INCHES NOMINAL IN
OUTSIDE DIAMETER0.685 INCHES NOMINAL IN
STYLE DESIGNATORSOLID
MEDIA FOR WHICH DESIGNEDAIR
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
114973PC302Reference document
Same NSN cross-reference
Reference document — Secondary reference
114963PC302Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 39B?
39B is a SWITCH,INTERLOCK.
What parts can replace 39B?
There are 2 known substitutes for 39B: 114973PC302, 114963PC302. Substitute compatibility should be verified for your specific system.
What is the NSN for 39B?
39B is cataloged in the U.S. Government catalog under NSN 4820-00-119-3254. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.