McMaster 97135A230 High-Strength Steel Nylon-Insert Locknut, Pack of 20, Grade 8, Zinc Yellow-Chromate Plated, 3/8"-16 Thread 55CX07 I-Beam Level

I-Beam Level

Vandal Resistant Hand Factory Left

For Use With 17700-2K

rust and corrosion

Shock-Absorbing For Surface Type Asphalt

McMaster 97135A230 High-Strength Steel Nylon-Insert Locknut, Pack of 20, Grade 8, Zinc Yellow-Chromate Plated, 3/8"-16 Thread 55CX07 I-Beam LevelVersatile yet economical, these are the most commonly used locknuts. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use. High Strength Steel Rated Grade 8, Grade C, or Class 10, these locknuts are about 25% stronger than medium strength