Heavy Duty Turnlocks HHS Heavy Duty High Strength The heavy duty High Strength series is the strongest of the Turnlock series. It can withstand tensile strength up to a maximum of 10.000Newton and has a workload of 7.000Newton Due to these high values, this series is commonly used on commercial vehicles, coaches, chemical machinery, agricultural machinery. HGR Heavy Duty Grommet Retained The Heavy duty Grommet Retained series is a strong turnlock solution. It offers a small fastener with a high tensile load. That way it makes it very useful on racing vehicles. This series also has floating receptacles to allow some deflection space for assembly. HPT Heavy Duty Push Turn The heavy duty Push Turn series is the strongest of the Turnlock Push Turn series. It can withstand tensile strength up to a maximum of 3.000 Newton and has a workload of 2.500Newton Due to these high values, this series has a robust design - high strenght. Turnlock to open - closed by a push of the finger.