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Technical Data Sheet
PartsTable / MRO / 490-6
490-6 ✓ Verified by PartsTable
Zyxel · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include color: BROWN SINGLE ACTUATOR, material: STEEL, tube_type: CAMERA, body_style: HOLE MOUNT, body_width: 1.250 INCHES NOMINAL IN, link_style: TUBULAR SHANK. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-036-1656, 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→ 490-6
NSN: 4820-00-036-1656
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
colorBROWN SINGLE ACTUATOR
materialSTEEL
tube_typeCAMERA
body_styleHOLE MOUNT
body_width1.250 INCHES NOMINAL IN
link_styleTUBULAR SHANK
body_height1.080 INCHES NOMINAL IN
body_length0.563 INCHES NOMINAL IN
socket_shapeHEXAGON
body_diameter0.630 INCHES NOMINAL IN
overall_width1.250 INCHES NOMINAL IN
terminal_typeWIRE LEAD
NSN4820-00-036-1656
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 490-6 · Zyxel ⚠ 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
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
•
OUTSIDE DIAMETER: 3.088 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
OUTSIDE DIAMETER3.088 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
311-0374-00Interchangeable
interchangeable cross-reference
interchangeable
311-374Interchangeable
interchangeable cross-reference
interchangeable
LA1G024S254MZInterchangeable
interchangeable cross-reference
interchangeable
PPP-B-636 TYCFVASWGRV3CSTRSCInterchangeable
interchangeable cross-reference
interchangeable
ASTM-D5118Interchangeable
interchangeable cross-reference
interchangeable
ASTM-D4727Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 490-6?
490-6 is a RESISTOR,FIXED,WIRE WOUND,INDUCT manufactured by Zyxel. It is classified as a MRO (MRO_GENERAL).
What parts can replace 490-6?
There are 29 known substitutes for 490-6: 311-0374-00, 311-374, LA1G024S254MZ and 26 more. Substitute compatibility should be verified for your specific system.
Is 490-6 still available?
490-6 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026