Last thread is incomplete to prevent stud from turning through bottom. Many sizes conform to TCMA standards. Case hardened 1018 steel with black oxide finish. Order by selecting nut that matches your T-slot and thread sizes.
Warning:This product may expose you to chemicals including Nickel, Chromium, or Lead, chemicals known to the State of California to cause Birth Defects and/or Cancer. For more information go to www.P65Warnings.ca.gov