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10378821 — RING,PLANET RETAINER

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

10378821: RING,PLANET RETAINER.

The RING,PLANET RETAINER is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: NITRALLOY 135M STEEL PER MIL-S-6709; 2.015 TO 2.025 IN. OD; 1.590 TO 1.610 IN.

ID; 0.137 TO 0.143 IN. THK IN. This part is cataloged in the U.S.

Government catalog under NSN 1680-01-125-8685, 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
10378821
NSN: 1680-01-125-8685
FSC: 1680 — Miscellaneous Aircraft Accessories and Components
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
general_characteristics_item_descriptionNITRALLOY 135M STEEL PER MIL-S-6709; 2.015 TO 2.025 IN. OD; 1.590 TO 1.610 IN. ID; 0.137 TO 0.143 IN. THK IN
NSN1680-01-125-8685
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,PLANET RETAINER TITLE COMPONENT PN 10378821 MFR RING,PLANET RETAINER
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: NITRALLOY 135M STEEL PER MIL-S-6709; 2.015 TO 2.025 IN. OD; 1.590 TO 1.610 IN. ID; 0.137 TO 0.143 IN. THK IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONNITRALLOY 135M STEEL PER MIL-S-6709; 2.015 TO 2.025 IN. OD; 1.590 TO 1.610 IN. ID; 0.137 TO 0.143 IN. THK IN
OTHER ITEMS IN FSC 1680 — Miscellaneous Aircraft Accessories and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1680-00-001-1736 1680-00-003-3721 1680-00-009-3782 1680-00-009-6180 1680-00-475-0002 1680-00-696-6170 1680-00-867-7158 1680-00-885-0923
SUBSTITUTES & CROSS-REFERENCES 1
2046365-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 10378821?
10378821 is a RING,PLANET RETAINER.
What parts can replace 10378821?
There is 1 known substitute for 10378821: 2046365-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 10378821?
10378821 is cataloged in the U.S. Government catalog under NSN 1680-01-125-8685. 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.