Top Grip Metal Tek SDM 12-14x68 +Seal B8 Coating

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Top Grip 12 gauge-14 threads per inch x 68mm long screw with seal, B8 coating

Top Grip screws with seal are for fastening the crest of roof sheeting to metal where a water tight seal is required.

The B8 corrosion protection system exceeds the requirements of ISO 9223 Category 4 (Severe industrial and severe marine environments).

AS 3566.2 (Self drilling screws for the building & construction industries) specifies the corrosion protection systems required on screw fasteners Classes 1, 2, 3 & 4 where Class 1 is intended for indoor application and Class 4 for environments up to and including ISO 9223 Category 4 (Severe industrial and severe marine environments).