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563-6984943-43 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

563-6984943-43: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL CORROSION RESISTING, lip_thickness: 0.266 INCHES NOMINAL IN, overall_height: 0.938 INCHES NOMINAL IN, flange_diameter: 0.750 INCHES NOMINAL IN, flange_thickness: 0.266 INCHES NOMINAL IN, end_hole_diameter: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-499-2926, 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
563-6984943-43
NSN: 5340-01-499-2926
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
lip_thickness0.266 INCHES NOMINAL IN
overall_height0.938 INCHES NOMINAL IN
flange_diameter0.750 INCHES NOMINAL IN
flange_thickness0.266 INCHES NOMINAL IN
end_hole_diameter0.250 INCHES NOMINAL IN
body_inside_diameter0.484 INCHES NOMINAL IN
bolt_circle_diameter0.188 INCHES NOMINAL IN
body_outside_diameter0.625 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
end_item_identificationMBT GEAR ASSEMBLY
NSN5340-01-499-2926
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 563-6984943-43 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLANGE DIAMETER: 0.750 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.266 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.484 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
LIP THICKNESS: 0.266 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.750 INCHES NOMINAL IN
OVERALL HEIGHT0.938 INCHES NOMINAL IN
FLANGE THICKNESS0.266 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.484 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
LIP THICKNESS0.266 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER0.188 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMBT GEAR ASSEMBLY
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 1
6984943Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 563-6984943-43?
563-6984943-43 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 563-6984943-43?
There is 1 known substitute for 563-6984943-43: 6984943. Substitute compatibility should be verified for your specific system.
What is the NSN for 563-6984943-43?
563-6984943-43 is cataloged in the U.S. Government catalog under NSN 5340-01-499-2926. 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.