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PartsTable / COMPONENT / 646421
646421 ✓ Verified by PartsTable
Legrand · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The VALVE,POPPET,ENGINE is a Legrand industrial component. Key specifications include head_style: INVERTED CONE, stem_style: GROOVED, head_height: 0.1562 INCHES NOMINAL IN, neck_radius: 0.7500 INCHES NOMINAL IN, stem_length: 4.6250 INCHES NOMINAL IN, groove_width: 0.3105 INCHES MINIMUM AND 0.3145 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-293-9701, 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
646421
NSN: 2805-00-293-9701
FSC: 2805
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
head_styleINVERTED CONE
stem_styleGROOVED
head_height0.1562 INCHES NOMINAL IN
neck_radius0.7500 INCHES NOMINAL IN
stem_length4.6250 INCHES NOMINAL IN
groove_width0.3105 INCHES MINIMUM AND 0.3145 INCHES MAXIMUM IN
stem_diameter0.3733 INCHES MINIMUM AND 0.3738 INCHES MAXIMUM IN
chamfer_length0.0312 INCHES NOMINAL IN
groove_diameter0.2480 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
outside_diameter2.0000 INCHES NOMINAL IN
seat_angle_in_deg45.0
carbon_relief_grooveNOT INCLUDED
NSN2805-00-293-9701
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Legrand VALVE,POPPET,ENGINE TITLE COMPONENT PN 646421 MFR Legrand VALVE,POPPET,ENGINE
KEY FEATURES
•
STEM DIAMETER: 0.3733 INCHES MINIMUM AND 0.3738 INCHES MAXIMUM IN
•
SEAT ANGLE IN DEG: 45.0
•
OUTSIDE DIAMETER: 2.0000 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.1562 INCHES NOMINAL IN
•
METALLIC HARDNESS RATING AND LOCATION: 52.0 ROCKWELL C MINIMUM TIP
•
FSC APPLICATION DATA: GASOLINE ENGINE
•
CHAMFER ANGLE IN DEG: 45.0
•
STEM STYLE: GROOVED
TECHNICAL CHARACTERISTICS (FLIS)
STEM DIAMETER0.3733 INCHES MINIMUM AND 0.3738 INCHES MAXIMUM IN
SEAT ANGLE IN DEG45.0
OUTSIDE DIAMETER2.0000 INCHES NOMINAL IN
HEAD HEIGHT0.1562 INCHES NOMINAL IN
METALLIC HARDNESS RATING AND LOCATION52.0 ROCKWELL C MINIMUM TIP
FSC APPLICATION DATAGASOLINE ENGINE
CHAMFER ANGLE IN DEG45.0
STEM STYLEGROOVED
GROOVE WIDTH0.3105 INCHES MINIMUM AND 0.3145 INCHES MAXIMUM IN
CHAMFER LENGTH0.0312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
1850Interchangeable
interchangeable cross-reference
interchangeable
PL1850Interchangeable
interchangeable cross-reference
interchangeable
168-2Interchangeable
interchangeable cross-reference
interchangeable
FIG13DInterchangeable
interchangeable cross-reference
interchangeable
VGCH-100Interchangeable
interchangeable cross-reference
interchangeable
JV-73Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 646421?
646421 is a VALVE,POPPET,ENGINE manufactured by Legrand.
What parts can replace 646421?
There are 14 known substitutes for 646421: 1850, PL1850, 168-2 and 11 more. Substitute compatibility should be verified for your specific system.
Is 646421 still available?
646421 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026