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634985 — LOCK,VALVE SPRING RETAINER

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

634985: LOCK,VALVE SPRING RETAINER.

The LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.370 INCHES NOMINAL IN, style_designator: INVERTED TAPERED BORE, thread_provision: UNTHREADED, first_ridge_width: 0.055 INCHES NOMINAL IN, first_ridge_radius: 0.170 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2805-00-962-8431, 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
634985
NSN: 2805-00-962-8431
FSC: 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
overall_height0.370 INCHES NOMINAL IN
style_designatorINVERTED TAPERED BORE
thread_provisionUNTHREADED
first_ridge_width0.055 INCHES NOMINAL IN
first_ridge_radius0.170 INCHES NOMINAL IN
second_ridge_radius0.170 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
largest_inside_diameter0.400 INCHES NOMINAL IN
minimum_inside_diameter0.344 INCHES IN
largest_outside_diameter0.545 INCHES NOMINAL IN
inside_included_angle_in_deg92.0
NSN2805-00-962-8431
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOCK,VALVE SPRING RETAINER TITLE COMPONENT PN 634985 MFR LOCK,VALVE SPRING RETA
KEY FEATURES
•
FIRST RIDGE RADIUS: 0.170 INCHES NOMINAL IN
•
MINIMUM INSIDE DIAMETER: 0.344 INCHES IN
•
THREAD PROVISION: UNTHREADED
•
DISTANCE FROM BOTTOM TO FIRST RIDGE CENTER: 0.187 INCHES NOMINAL IN
•
LARGEST OUTSIDE DIAMETER: 0.545 INCHES NOMINAL IN
•
FIRST RIDGE WIDTH: 0.055 INCHES NOMINAL IN
•
LARGEST INSIDE DIAMETER: 0.400 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.370 INCHES NOMINAL IN
FIRST RIDGE RADIUS0.170 INCHES NOMINAL IN
MINIMUM INSIDE DIAMETER0.344 INCHES IN
THREAD PROVISIONUNTHREADED
DISTANCE FROM BOTTOM TO FIRST RIDGE CENTER0.187 INCHES NOMINAL IN
LARGEST OUTSIDE DIAMETER0.545 INCHES NOMINAL IN
FIRST RIDGE WIDTH0.055 INCHES NOMINAL IN
LARGEST INSIDE DIAMETER0.400 INCHES NOMINAL IN
INSIDE INCLUDED ANGLE IN DEG92.0
STYLE DESIGNATORINVERTED TAPERED BORE
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.
2805-00-000-4022 2805-00-001-0029 2805-00-001-3527 2805-00-001-3844 2805-00-001-3854 2805-00-001-6154 2805-00-001-6164 2805-00-001-6575
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 634985?
634985 is a LOCK,VALVE SPRING RETAINER.
What is the NSN for 634985?
634985 is cataloged in the U.S. Government catalog under NSN 2805-00-962-8431. 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.