| Additional Sizes Now Available!
FEATURES: Heavy lock nut that can be tightened by hand or with an extension rod (1/4" or 6mm diameter). Large contact surface. Made in USA.
SIZES: Available in the following thread sizes — see Dimensions page for part numbers:
| ||1/4-20|| ||M6|
| ||5/16-18|| ||M8|
| ||3/8-16|| ||M10|
| ||1/2-13|| ||M12|
| ||5/8-11|| ||M16|
MATERIAL: 12L14 steel, black oxide finish. DFARS and RoHS compliant.
For Knurled Nuts with a smaller outside diameter, see Knurled Check Nuts.