1/4-20 X 5/8 HCS GR 5 (Toyota TY00591-17554-81)

A damaged fastener can compromise the security of a bolted joint. During inspection, a 1/4-20 X 5/8 HCS GR 5 bolt may show signs of corrosion or thread wear. Keeping a fastener in sound condition helps maintain clamping force in assembled components. This aftermarket replacement part references Toyota catalog number TY00591-17554-81. The part type is a hex cap screw, which provides mechanical clamping through threaded engagement. A generic failure consequence is that a loose or broken fastener can allow parts to separate under load. Verify the serial number or application, then call (562) 693-7748. The listed spec is 20 X 5. This item ships at approximately 0.017 POUNDS.

Part number variants: TY00591-17554-81, ty00591-17554-81, TY005911755481, ty005911755481