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291-20661 — LOCK,VALVE SPRING RETAINER

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

291-20661: LOCK,VALVE SPRING RETAINER.

The LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.437 INCHES NOMINAL IN, style_designator: STRAIGHT BORE, thread_provision: UNTHREADED, casehardening_indicator: NOT CASEHARDENED, largest_inside_diameter: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2815-00-192-8767, 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
291-20661
NSN: 2815-00-192-8767
NIINs: 001928767, 013121306
FSC: 2815 — Diesel Engines and Components
CAGE: K0160 — LISTER PETTER LTD (GBR)
SPECIFICATIONS
materialSTEEL
overall_height0.437 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE
thread_provisionUNTHREADED
casehardening_indicatorNOT CASEHARDENED
largest_inside_diameter0.375 INCHES NOMINAL IN
minimum_inside_diameter0.375 INCHES IN
largest_outside_diameter0.562 INCHES NOMINAL IN
smallest_outside_diameter0.500 INCHES NOMINAL IN
NSN2815-00-192-8767
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOCK,VALVE SPRING RETAINER TITLE COMPONENT PN 291-20661 MFR LOCK,VALVE SPRING RETA
KEY FEATURES
•
MINIMUM INSIDE DIAMETER: 0.375 INCHES IN
•
THREAD PROVISION: UNTHREADED
•
LARGEST OUTSIDE DIAMETER: 0.562 INCHES NOMINAL IN
•
LARGEST INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE
•
SMALLEST OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.437 INCHES NOMINAL IN
MINIMUM INSIDE DIAMETER0.375 INCHES IN
THREAD PROVISIONUNTHREADED
LARGEST OUTSIDE DIAMETER0.562 INCHES NOMINAL IN
LARGEST INSIDE DIAMETER0.375 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE
SMALLEST OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALSTEEL
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 291-20661?
291-20661 is a LOCK,VALVE SPRING RETAINER.
What is the NSN for 291-20661?
291-20661 is cataloged in the U.S. Government catalog under NSN 2815-00-192-8767. 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.