For more than 35 years, the Spiralock® thread form has been used in extreme fastening applications where joint failure or loosening is not an option – from the main engines of NASA’s Space Shuttle, the Saturn Cassini orbiter and Titan Huygens probe, to deep sea oil rigs, military and aerospace vehicles, as well as medical implants such as artificial limbs and heart pumps.
STANLEY points out that its Spiralock threaded nuts accept standard male fasteners; eliminate the need for other locking devices; minimise galling – since it is free spinning until clamp load is applied; and substantially reduce the potential for fatigue failure compared to standard threads. “The Spiralock thread form solves thread loosening and joint integrity issues by changing the physics of how the threads interact. In traditional 60° threads, the gap between the upper edges of the male and female threads can lead to shock, vibration, or temperature caused thread loosening. Stress concentration and fatigue at the first few engaged threads is also a problem, particularly with softer metals. The unique profile of Spiralock threads closes the gap that causes loosening, improving the integrity and reliability of threaded joints.”
Industries concerned about corrosion will also benefit from the corrosion protection delivered by the nuts’ grade 316 austenitic stainless steel composition, which can be used instead of lower grades of stainless steel.
Will joined Fastener + Fixing Magazine in 2007 and over the last 12 years has experienced every facet of the fastener sector – interviewing key figures within the industry and visiting leading companies and exhibitions around the globe. Will manages the content strategy across all platforms and is the guardian for the high editorial standards that the brand is renowned.