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Technical Data Sheet
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D564 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

TRANSFORMER,POWER AUTOTRANSFORME. Key specifications include length: 0.599 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, diameter: 0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, temp_rating: 212.0 FAHRENHEIT DEGF, hole_diameter: 0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 7.125 INCHES NOMINAL IN, style_designator: CIRCULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-244-2760, 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
D564
NSN: 5330-00-244-2760
FSC: 5330
CAGE: 8E499 — KOEHRING CRANES AND EXCAVATORS INC SUB OF NORTHWEST ENGINEERING CO (USA)
SPECIFICATIONS
length0.599 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
diameter0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
materialSTEEL COMP 1118 OR STEEL COMP 1022 OR STEEL COMP 1020 OR STEEL COMP 1018 OR STEEL COMP 1213 OR STEEL COMP 1115 OVERALL
temp_rating212.0 FAHRENHEIT DEGF
hole_diameter0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter7.125 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter5.281 INCHES NOMINAL IN
bolt_hole_quantity6
bolt_circle_diameter6.250 INCHES NOMINAL IN
end_item_identification015331853
cross-sectional_thickness0.031 INCHES NOMINAL IN
NSN5330-00-244-2760
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D564 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
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE DIAMETER: 5.281 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
TEMP RATING: 212.0 FAHRENHEIT DEGF
•
OUTSIDE DIAMETER: 7.125 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
•
MATERIAL: PAPER AND GLUE AND GLYCERIN OVERALL
•
BOLT HOLE QUANTITY: 6
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
APERTURE DIAMETER5.281 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
TEMP RATING212.0 FAHRENHEIT DEGF
OUTSIDE DIAMETER7.125 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
MATERIALPAPER AND GLUE AND GLYCERIN OVERALL
BOLT HOLE QUANTITY6
MATERIAL DOCUMENT AND CLASSIFICATIONHH-P-96 FED SPEC ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
20329PCD5-6-4Interchangeable
interchangeable cross-reference
interchangeable
D5-6-4Interchangeable
interchangeable cross-reference
interchangeable
40913PC15Interchangeable
interchangeable cross-reference
interchangeable
27096HInterchangeable
interchangeable cross-reference
interchangeable
35660Interchangeable
interchangeable cross-reference
interchangeable
603021Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D564?
D564 is a TRANSFORMER,POWER AUTOTRANSFORME.
What parts can replace D564?
There are 8 known substitutes for D564: 20329PCD5-6-4, D5-6-4, 40913PC15 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D564?
D564 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-244-2760. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026