Unbrako 5/8 X 3 1/4 Socket Head Shoulder Screw 03662

The Unbrako Fastener Brand Name Is Widely Recognized Throughout The World. Unbrako Socket Screws Are Used In Machine Tools, Tools and Dies, Earth Moving and Mining Machinery, and A Wide Range Of Industrial and Engineering Applications. 10,000 PSI Stronger Than Industry Standard With Double Fatigue Life At Critical Head-Shank Juncture Maximizes fatigue resistance where it is needed Most.E Code InchLOT CODE Inch Markings The ultimate in fastener traceability.