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6503-86 PIECE 332 — COVER,BEARING

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

6503-86 PIECE 332: COVER,BEARING.

The COVER,BEARING is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: SILICONE RUBBER. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-235-9078, 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
6503-86 PIECE 332
NSN: 4820-01-235-9078
FSC: 4820 — Valves, Nonpowered
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSILICONE RUBBER
NSN4820-01-235-9078
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6503-86 PIECE 332 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: SILICONE RUBBER
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSILICONE RUBBER
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 3
6503-117Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
6503-86Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
4457023 ITEM 332Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 6503-86 PIECE 332?
6503-86 PIECE 332 is a COVER,BEARING.
What parts can replace 6503-86 PIECE 332?
There are 3 known substitutes for 6503-86 PIECE 332: 6503-117, 6503-86, 4457023 ITEM 332. Substitute compatibility should be verified for your specific system.
What is the NSN for 6503-86 PIECE 332?
6503-86 PIECE 332 is cataloged in the U.S. Government catalog under NSN 4820-01-235-9078. 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.