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63994 — RESISTOR,VARIABLE,WIRE WOUND,NON

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

63994: RESISTOR,VARIABLE,WIRE WOUND,NON.

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include material: COPPER ALLOY BODY, body_style: CYLINDRICAL SERVO MOUNTED, body_length: 2.375 INCHES NOMINAL IN, flat_height: 0.344 INCHES NOMINAL IN, shaft_style: ROUND, FLATTED, shaft_length: 2.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-148-9380, 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→ 63994
NSN: 4820-01-148-9380
NIINs: 011489380, 012291241
FSC: 4820 — Valves, Nonpowered
CAGE: 13841 — TIFFIN PARTS, L.L.C. DIV SUBSIDIARY OF PETTIBONE CORP. (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
body_styleCYLINDRICAL SERVO MOUNTED
body_length2.375 INCHES NOMINAL IN
flat_height0.344 INCHES NOMINAL IN
shaft_styleROUND, FLATTED
shaft_length2.000 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
body_diameter6.000 INCHES NOMINAL IN
cubic_measure67.151 CUBIC INCHES
shaft_diameter0.375 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
mounting_methodTHREADED HOLE(S)
NSN4820-01-148-9380
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 63994 · 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
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: ANGLE
•
ADJUSTABLE PRESSURE RANGE: +4.0 TO 15.0 POUNDS PER SQUARE INCH LBS
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
•
MATERIAL: COPPER ALLOY BODY
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
STYLE DESIGNATORANGLE
ADJUSTABLE PRESSURE RANGE+4.0 TO 15.0 POUNDS PER SQUARE INCH LBS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
MATERIALCOPPER ALLOY BODY
THREAD SERIES DESIGNATORNPT ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 1
636B-1-1/4-2Reference 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 63994?
63994 is a RESISTOR,VARIABLE,WIRE WOUND,NON. It is classified as a MRO (MRO_GENERAL).
What parts can replace 63994?
There is 1 known substitute for 63994: 636B-1-1/4-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 63994?
63994 is cataloged in the U.S. Government catalog under NSN 4820-01-148-9380. 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.