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81393-01 — SEMICONDUCTOR DEVICES,UNITIZED

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

81393-01: SEMICONDUCTOR DEVICES,UNITIZED.

The SEMICONDUCTOR DEVICES,UNITIZED is a the manufacturer industrial component. Key specifications include material: RUBBER FABRIC REINFORCED, overall_width: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN, overall_height: 0.066 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN, overall_length: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, mounting_method: TERMINAL, outside_diameter: 3.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-678-0268, 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
81393-01
NSN: 4820-00-678-0268
NIINs: 006780268, 014331629
FSC: 4820 — Valves, Nonpowered
CAGE: 24658 — GENERAL REGULATOR CORP. DBA ACCUDRIV (USA)
SPECIFICATIONS
materialRUBBER FABRIC REINFORCED
overall_width0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
overall_height0.066 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
overall_length0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
mounting_methodTERMINAL
outside_diameter3.250 INCHES NOMINAL IN
special_featuresALL TRANSISTOR JUNCTION PATTERN ARRANGEMENT: NPN
style_designatorFLAT
material_thickness0.007 INCHES NOMINAL IN
center_hole_diameter0.188 INCHES NOMINAL IN
mounting_facility_quantity6
component_name_and_quantity2 TRANSISTOR
NSN4820-00-678-0268
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 81393-01 · 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: 3.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.007 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.188 INCHES NOMINAL IN
•
MATERIAL: RUBBER FABRIC REINFORCED
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER3.250 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.007 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.188 INCHES NOMINAL IN
MATERIALRUBBER FABRIC REINFORCED
SUBSTITUTES & CROSS-REFERENCES 1
1870-37Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 81393-01?
81393-01 is a SEMICONDUCTOR DEVICES,UNITIZED.
What parts can replace 81393-01?
There is 1 known substitute for 81393-01: 1870-37. Substitute compatibility should be verified for your specific system.
What is the NSN for 81393-01?
81393-01 is cataloged in the U.S. Government catalog under NSN 4820-00-678-0268. 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.