GB/T3098.9—2002 Mechanical properties of fasteners prevailing torque type steel hexagon nuts.
ISO 2320:1997
HRJ—100KN testing machine for fastener broadwise vibrating: Heng Rui Jin testing machine limited company
This type of machine is used in friction type, bearing type, tensile type, torshear type, big six angle bolt. Testing and researching self-locking capacity (anti-loosing capacity) for connection pair of fastener and connection pair with prestressing.
Clamping loading 100KN.
Broadwise loading: 20KN, amplitude of broadwise is ±2mm, testing frequency is 1—15Hz.
Bolt/nut: M3—M10mm
Heng Rui Jin HRJ—Test entire digital close loop, multichannel testing system.
NDS, NDW, EZ torsion testing machine for wire stock and bolt