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166772 — LOCK,VALVE SPRING RETAINER

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

166772: LOCK,VALVE SPRING RETAINER.

The LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.375 INCHES NOMINAL IN, style_designator: STRAIGHT BORE-TOP AND BOTTOM COUNTERBORE, thread_provision: UNTHREADED, largest_outside_width: 0.078 INCHES NOMINAL IN, top_counterbore_depth: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2815-00-402-5186, 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
166772
NSN: 2815-00-402-5186
NIINs: 004025186, 012896574
FSC: 2815 — Diesel Engines and Components
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSTEEL
overall_height0.375 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE-TOP AND BOTTOM COUNTERBORE
thread_provisionUNTHREADED
largest_outside_width0.078 INCHES NOMINAL IN
top_counterbore_depth0.125 INCHES NOMINAL IN
casehardening_indicatorCASEHARDENED
largest_inside_diameter0.375 INCHES NOMINAL IN
minimum_inside_diameter0.350 INCHES IN
bottom_counterbore_depth0.125 INCHES NOMINAL IN
largest_outside_diameter0.516 INCHES NOMINAL IN
outside_included_angle_in_deg7.5
NSN2815-00-402-5186
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOCK,VALVE SPRING RETAINER TITLE COMPONENT PN 166772 MFR LOCK,VALVE SPRING RETA
KEY FEATURES
•
MINIMUM INSIDE DIAMETER: 0.350 INCHES IN
•
THREAD PROVISION: UNTHREADED
•
LARGEST OUTSIDE DIAMETER: 0.516 INCHES NOMINAL IN
•
LARGEST INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE-TOP AND BOTTOM COUNTERBORE
•
BOTTOM COUNTERBORE DEPTH: 0.125 INCHES NOMINAL IN
•
LARGEST OUTSIDE WIDTH: 0.078 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.375 INCHES NOMINAL IN
MINIMUM INSIDE DIAMETER0.350 INCHES IN
THREAD PROVISIONUNTHREADED
LARGEST OUTSIDE DIAMETER0.516 INCHES NOMINAL IN
LARGEST INSIDE DIAMETER0.375 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE-TOP AND BOTTOM COUNTERBORE
BOTTOM COUNTERBORE DEPTH0.125 INCHES NOMINAL IN
LARGEST OUTSIDE WIDTH0.078 INCHES NOMINAL IN
OUTSIDE INCLUDED ANGLE IN DEG7.5
CASEHARDENING INDICATORCASEHARDENED
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 166772?
166772 is a LOCK,VALVE SPRING RETAINER.
What is the NSN for 166772?
166772 is cataloged in the U.S. Government catalog under NSN 2815-00-402-5186. 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.