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256019B — GUIDE,VALVE STEM

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

256019B: GUIDE,VALVE STEM.

The GUIDE,VALVE STEM is a the manufacturer industrial component. Key specifications include material: STEEL, bore_diameter: 0.3750 INCHES NOMINAL IN, overall_length: 2.937 INCHES NOMINAL IN, bore_counterbore: NOT INCLUDED, bore_countersink: NOT INCLUDED, outside_diameter: 0.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2815-00-961-1674, 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
256019B
NSN: 2815-00-961-1674
FSC: 2815 — Diesel Engines and Components
CAGE: 28265 — HERCULES ENGINE CO INC (USA)
SPECIFICATIONS
materialSTEEL
bore_diameter0.3750 INCHES NOMINAL IN
overall_length2.937 INCHES NOMINAL IN
bore_counterboreNOT INCLUDED
bore_countersinkNOT INCLUDED
outside_diameter0.625 INCHES NOMINAL IN
style_designatorPLAIN, SHOULDERED
aa_end_chamfer_length0.046 INCHES NOMINAL IN
bb_end_chamfer_length0.187 INCHES NOMINAL IN
bb_end_shank_diameter0.593 INCHES NOMINAL IN
major_diameter_length2.718 INCHES NOMINAL IN
aa_end_chamfer_angle_in_deg45.0
NSN2815-00-961-1674
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GUIDE,VALVE STEM TITLE COMPONENT PN 256019B MFR GUIDE,VALVE STEM
KEY FEATURES
•
AA END CHAMFER ANGLE IN DEG: 45.0
•
AA END CHAMFER LENGTH: 0.046 INCHES NOMINAL IN
•
MAJOR DIAMETER LENGTH: 2.718 INCHES NOMINAL IN
•
BB END SHANK DIAMETER: 0.593 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN, SHOULDERED
•
BORE COUNTERBORE: NOT INCLUDED
•
OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
AA END CHAMFER ANGLE IN DEG45.0
AA END CHAMFER LENGTH0.046 INCHES NOMINAL IN
MAJOR DIAMETER LENGTH2.718 INCHES NOMINAL IN
BB END SHANK DIAMETER0.593 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN, SHOULDERED
OVERALL LENGTH2.937 INCHES NOMINAL IN
BORE COUNTERBORENOT INCLUDED
OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
BB END CHAMFER LENGTH0.187 INCHES NOMINAL IN
BB END CHAMFER ANGLE IN DEG30.0
SUBSTITUTES & CROSS-REFERENCES 5
40-3022504Reference document
Same NSN cross-reference
Reference document — Secondary reference
P1101Reference document
Same NSN cross-reference
Reference document — Secondary reference
40-3022505Reference document
Same NSN cross-reference
Reference document — Secondary reference
256019AReference document
Same NSN cross-reference
Reference document — Secondary reference
256019Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 256019B?
256019B is a GUIDE,VALVE STEM.
What parts can replace 256019B?
There are 5 known substitutes for 256019B: 40-3022504, P1101, 40-3022505 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 256019B?
256019B is cataloged in the U.S. Government catalog under NSN 2815-00-961-1674. 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.