Product Announcement from Stanley Engineered Fastening - Spiralock
In addition to the basic benefits of the unique Spiralock thread such as vibration loosening resistance, reusability, elimination of secondary locking devices, improvement in quality and joint fatigue life and reduction of costs, this nut is equivalent to MS21042 and MS21043 except for the prevailing torque feature which is replaced by the Spiralock locking thread technology.
Spiralock equivalent to MS21042 and MS21043 nut is offered in various sizes.
Carbon Steel; 18-8 Stainless Steel and Alloy A286
- Cadmium plate per QQ-P-416, Type II, Class 2 and Dry Film Lube per MIL-PRF-46010
- Silver plate per AMS 2410 and wax