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3947880 — LOCK,VALVE SPRING RETAINER

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

3947880: LOCK,VALVE SPRING RETAINER.

The LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.378 INCHES NOMINAL IN, style_designator: STRAIGHT BORE W/TWO GROOVES, thread_provision: UNTHREADED, first_groove_width: 0.030 INCHES NOMINAL IN, second_groove_width: 0.030 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2805-00-127-4685, 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
3947880
NSN: 2805-00-127-4685
FSC: 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialSTEEL
overall_height0.378 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE W/TWO GROOVES
thread_provisionUNTHREADED
first_groove_width0.030 INCHES NOMINAL IN
second_groove_width0.030 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
largest_inside_diameter0.372 INCHES NOMINAL IN
minimum_inside_diameter0.345 INCHES IN
largest_outside_diameter0.521 INCHES NOMINAL IN
outside_included_angle_in_deg15.0
distance_from_bottom_to_first_groove_center0.188 INCHES NOMINAL IN
NSN2805-00-127-4685
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOCK,VALVE SPRING RETAINER TITLE COMPONENT PN 3947880 MFR LOCK,VALVE SPRING RETA
KEY FEATURES
•
MINIMUM INSIDE DIAMETER: 0.345 INCHES IN
•
SECOND GROOVE WIDTH: 0.030 INCHES NOMINAL IN
•
THREAD PROVISION: UNTHREADED
•
LARGEST OUTSIDE DIAMETER: 0.521 INCHES NOMINAL IN
•
DISTANCE BETWEEN FIRST AND SECOND GROOVE CENTERS: 0.087 INCHES NOMINAL IN
•
LARGEST INSIDE DIAMETER: 0.372 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE W/TWO GROOVES
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.378 INCHES NOMINAL IN
MINIMUM INSIDE DIAMETER0.345 INCHES IN
SECOND GROOVE WIDTH0.030 INCHES NOMINAL IN
THREAD PROVISIONUNTHREADED
LARGEST OUTSIDE DIAMETER0.521 INCHES NOMINAL IN
DISTANCE BETWEEN FIRST AND SECOND GROOVE CENTERS0.087 INCHES NOMINAL IN
LARGEST INSIDE DIAMETER0.372 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE W/TWO GROOVES
DISTANCE FROM BOTTOM TO FIRST GROOVE CENTER0.188 INCHES NOMINAL IN
OUTSIDE INCLUDED ANGLE IN DEG15.0
OTHER ITEMS IN FSC 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2805-00-010-2959 2805-00-066-3426 2805-00-326-0797 2805-00-395-7778 2805-00-422-9321 2805-00-447-9114 2805-00-448-0786 2805-00-561-9463
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 3947880?
3947880 is a LOCK,VALVE SPRING RETAINER.
What is the NSN for 3947880?
3947880 is cataloged in the U.S. Government catalog under NSN 2805-00-127-4685. 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.