TIMco H38W16BB No.5 Hex Self Drilling Screw 5.5 x 38 and M16 Washer Silver (Bag of 100)

Zoro Tools

Used for attaching metal to heavy section steel (Max. 12mm) without the need to pre-drill a hole. NOTE: Partially threaded. Please Note : Due to geographical locations we are unable to deliver to Highlands

Amazon

Hex head with washer Self-drilling tip Silver Ruspert Designed for heavy sectional work, Weight: 1.8077905484 pounds, Manufacturer: TIMco

ManoMano

Used for attaching metal to heavy section steel (Max. 12mm) without the need to pre-drill a hole. NOTE: Partially threaded.