L9 7/8″-9 x 2-1/2″ Hex Head Bolts — Special High Strength Alloy Steel
Specially designed features include • UNR Thread radius is maintained into the thread run-out at the junction of thread to shank. 5 L-9, 7/8″ – 9 x 2-1/2″ Hex Head Cap screws. • UNR Radiused root bolt thread increases fatigue resistance by reducing the notch effect of conventional UN threads.