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5H51 — COVER,PRESSURE PLATE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

5H51: COVER,PRESSURE PLATE.

The COVER,PRESSURE PLATE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 3110-00-516-5289, 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
5H51
NSN: 3110-00-516-5289
NIINs: 005165289, 009229634
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 08303 — LAKE REGION DEVELOPMENT CO INC BRADFORD MACHINE TOOL DIV (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,18.500 IN. OD,3.500 IN. O/A HEIGHT,THREE SETS PRESSURE RELEASE MOUNTING LUGS,4.375 IN. ID,TWELVE UNTHREADED MOUNTING HOLES,0.525 IN MTG HOLE DIA,EQUALLY SPACED ON 17.250 IN. DIA BOLT CIRCLE IN
NSN3110-00-516-5289
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 5H51 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 9
416821-66DReference document
Same NSN cross-reference
Reference document — Design control — primary reference
903203Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS1937-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
602054Reference document
Same NSN cross-reference
Reference document — Secondary reference
9044303Reference document
Same NSN cross-reference
Reference document — Secondary reference
18D778Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5H51?
5H51 is a COVER,PRESSURE PLATE.
What parts can replace 5H51?
There are 9 known substitutes for 5H51: 416821-66D, 903203, AS1937-6 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5H51?
5H51 is cataloged in the U.S. Government catalog under NSN 3110-00-516-5289. 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.