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YTD120 — SEAT,BALL SOCKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

YTD120: SEAT,BALL SOCKET.

The SEAT,BALL SOCKET is a the manufacturer industrial component. Key specifications include radius: 3.687 INCHES MINIMUM AND 3.690 INCHES MAXIMUM IN, hole_diameter: 6.742 INCHES NOMINAL IN, overall_height: 1.312 INCHES NOMINAL IN, ball_seat_depth: 0.625 INCHES NOMINAL IN, outside_diameter: 7.748 INCHES MINIMUM AND 7.749 INCHES MAXIMUM IN, end_item_identification: W/S:HELICOPTER,COBRA/TOW,AH SERIES. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-908-6771, 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
YTD120
NSN: 5340-00-908-6771
FSC: 5340 — Hardware, Commercial
CAGE: 77896 — REXNORD INDUSTRIES, LLC DIV AEROSSPACE BEARING OPERATION (USA)
SPECIFICATIONS
radius3.687 INCHES MINIMUM AND 3.690 INCHES MAXIMUM IN
materialALUMINUM ALLOY 2014 AND PLASTIC POLYTETRAFLUOROETHYLENE OR ALUMINUM ALLOY 2024 AND PLASTIC POLYTETRAFLUOROETHYLENE OR ALUMINUM ALLOY 7075 AND PLASTIC POLYTETRAFLUOROETHYLENE
hole_diameter6.742 INCHES NOMINAL IN
overall_height1.312 INCHES NOMINAL IN
ball_seat_depth0.625 INCHES NOMINAL IN
outside_diameter7.748 INCHES MINIMUM AND 7.749 INCHES MAXIMUM IN
special_featuresFLANGE OD 8.875 IN. NOM FLANGE W 0.247 IN. NOM,16 HOLES 0.264 IN. MIN,0.271 IN. MAX DIA EQUALLY SPACED ON 8.312 IN. DIA BOLT CIRCLE IN
end_item_identificationW/S:HELICOPTER,COBRA/TOW,AH SERIES
NSN5340-00-908-6771
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: YTD120 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
•
RADIUS: 3.687 INCHES MINIMUM AND 3.690 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 7.748 INCHES MINIMUM AND 7.749 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY 2014 AND PLASTIC POLYTETRAFLUOROETHYLENE OR ALUMINUM ALLOY 2024 AND PLASTIC POLYTETRAFLUOROETHYLENE OR ALUMINUM ALLOY 7075 AND PLASTIC POLYTETRAFLUOROETHYLENE
•
BALL SEAT DEPTH: 0.625 INCHES NOMINAL IN
•
HOLE DIAMETER: 6.742 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.312 INCHES NOMINAL IN
RADIUS3.687 INCHES MINIMUM AND 3.690 INCHES MAXIMUM IN
OUTSIDE DIAMETER7.748 INCHES MINIMUM AND 7.749 INCHES MAXIMUM IN
SPECIAL FEATURESFLANGE OD 8.875 IN. NOM FLANGE W 0.247 IN. NOM,16 HOLES 0.264 IN. MIN,0.271 IN. MAX DIA EQUALLY SPACED ON 8.312 IN. DIA BOLT CIRCLE IN
END ITEM IDENTIFICATIONW/S:HELICOPTER,COBRA/TOW,AH SERIES
MATERIALALUMINUM ALLOY 2014 AND PLASTIC POLYTETRAFLUOROETHYLENE OR ALUMINUM ALLOY 2024 AND PLASTIC POLYTETRAFLUOROETHYLENE OR ALUMINUM ALLOY 7075 AND PLASTIC POLYTETRAFLUOROETHYLENE
BALL SEAT DEPTH0.625 INCHES NOMINAL IN
HOLE DIAMETER6.742 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 2
78737Reference document
Same NSN cross-reference
Reference document — Secondary reference
540-011-455-1Same 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 YTD120?
YTD120 is a SEAT,BALL SOCKET.
What parts can replace YTD120?
There are 2 known substitutes for YTD120: 78737, 540-011-455-1. Substitute compatibility should be verified for your specific system.
What is the NSN for YTD120?
YTD120 is cataloged in the U.S. Government catalog under NSN 5340-00-908-6771. This indicates validated use in U.S. government and defense supply chains.
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