A2 (1.4301  grade) austenitic stainless steel self drilling fastener.
Fastening of standing seam halter clips to purlins/ rails.
A2 (1.4301  grade) austenitic stainless steel self drilling fastener with 6.0 mm diameter threads into the purlin/ rail. The fasteners are designed for securing halters for aluminium standing seam systems.
The uniquely designed fastener is driven via a square peg above a 7 mm hexagon head. The tapered section below the head engages in the 6.1 mm punched hole of the halter, which is clamped to the purlin/ rail. When the correct torque is reached the peg breaks off to ensure the fastener are not overdriven.
If a halter needs re-positioning the socket is reversed and the SDK fastener may be removed via the 7 mm hex drive.
Suitable to be used with all major aluminium standing seem manufacturers, subject to halter specification.
Up to 25 years - consult manufacturer.
Stainless steel A2.
SDK Stainless Steel Self Drilling Fastener