Steel Grade 8 1/2-20 Nylock - Shear

Item # ST364-820G5
1/2 - 20 Half High - Shear Nylock Nut Steel
Mettec recommends aircraft quailty lock nuts. The threads are high quality and have smooth action on the titanium threads. Nylon creates postive locking through multiple use. Visually inspect the locking area for wear, and replace the nut when you feel the resistance starting to relax.