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31431681 — VALVE,POPPET,ENGINE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

31431681: VALVE,POPPET,ENGINE.

The VALVE,POPPET,ENGINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT, stem_style: GROOVED, head_height: 0.1340 INCHES MINIMUM AND 0.1360 INCHES MAXIMUM IN, neck_radius: 0.4062 INCHES NOMINAL IN, stem_length: 4.3640 INCHES MINIMUM AND 4.3660 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 2815-01-174-7753, 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
31431681
NSN: 2815-01-174-7753
FSC: 2815 — Diesel Engines and Components
CAGE: 13446 — PERKINS ENGINES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT
stem_styleGROOVED
head_height0.1340 INCHES MINIMUM AND 0.1360 INCHES MAXIMUM IN
neck_radius0.4062 INCHES NOMINAL IN
stem_length4.3640 INCHES MINIMUM AND 4.3660 INCHES MAXIMUM IN
groove_width0.1120 INCHES NOMINAL IN
stem_diameter0.3120 INCHES NOMINAL IN
groove_diameter0.2500 INCHES NOMINAL IN
outside_diameter1.5365 INCHES NOMINAL IN
seat_angle_in_deg35.0
carbon_relief_grooveNOT INCLUDED
NSN2815-01-174-7753
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE,POPPET,ENGINE TITLE COMPONENT PN 31431681 MFR VALVE,POPPET,ENGINE
KEY FEATURES
•
STEM DIAMETER: 0.3120 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.1340 INCHES MINIMUM AND 0.1360 INCHES MAXIMUM IN
•
STEM LENGTH: 4.3640 INCHES MINIMUM AND 4.3660 INCHES MAXIMUM IN
•
SEAT ANGLE IN DEG: 35.0
•
NECK RADIUS: 0.4062 INCHES NOMINAL IN
•
GROOVE DIAMETER: 0.2500 INCHES NOMINAL IN
•
DISTANCE FROM GROOVE TO STEM END: 0.1250 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.5365 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STEM DIAMETER0.3120 INCHES NOMINAL IN
HEAD HEIGHT0.1340 INCHES MINIMUM AND 0.1360 INCHES MAXIMUM IN
STEM LENGTH4.3640 INCHES MINIMUM AND 4.3660 INCHES MAXIMUM IN
SEAT ANGLE IN DEG35.0
NECK RADIUS0.4062 INCHES NOMINAL IN
GROOVE DIAMETER0.2500 INCHES NOMINAL IN
DISTANCE FROM GROOVE TO STEM END0.1250 INCHES NOMINAL IN
OUTSIDE DIAMETER1.5365 INCHES NOMINAL IN
STEM STYLEGROOVED
HEAD STYLEFLAT
OTHER ITEMS IN FSC 2815 — Diesel Engines and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2815-00-000-0075 2815-00-001-0022 2815-00-001-3475 2815-00-001-7728 2815-00-001-7737 2815-00-001-7805 2815-00-001-7806 2815-00-001-7813
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 31431681?
31431681 is a VALVE,POPPET,ENGINE.
What is the NSN for 31431681?
31431681 is cataloged in the U.S. Government catalog under NSN 2815-01-174-7753. 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.