Expansion Screw For WPC Decking

Item No.: TNA-09L

Specification: M8 x 72mm 

Describe of the goods:  This expansion screw for fix wpc joist on the concrete base; it designed to pin down the joist to the sub floor. Once installed this expansion screw will allow expansion and contraction of the joists. Use these expansion screws to secure wpc joists directly to solid flat surfaces. The composite board can be lay directly on top.Do not use expansion screws to fix wpc joists over uneven ground. The distance between two expansion screws is about 40-45cm. As a rule of thumb, we recommend purchasing about 7-9 pieces per square meter.

Material:    It made from galvanized .The service life is very long.

Transport Packaging: 100 pieces each box and several boxes pack in one carton.

Product Application： It is mainly applying to fix the wpc joist on the concrete and it had fixed effect.