101 PCS M6.3 Stainless Steel Self Drilling Hex Head Screws with Gasket, 4 Sizes of Hex Head Self Tapping Screws with Socket M6.3 * 19 25 32 45 mm, Boxed.

Despite some reviews, with correct usage I found these to be well suitable for my task. Fixing lighting units to a steel ‘C’ beam spanning a concrete outbuilding. I would certainly recommend these when used for the application they are designed for.

Used the M5.5 to drill straight into a metal table leg, went through no problem without a pilot hole. Head on the bolt is nice and solid, no stripping using the provided adaptor. Would recommend!

Excellent

Many uses have strong grip once tight the plastic washer isnt so good but easy to change to a flat metal one. Great for many uses

Very happy with it

No good 😕

Very good quality thanks

Durable and strong enough for any job