M4.2 Stainless Steel Self Drilling Tek Screws - 50PCS/300PCS Flat Head

At OzSupply Australia we stock the M4.2 x 25/32/38mm Stainless Steel Drilling Flat Head Screws in 50/300pcs. With a point “like a drill bit”, these screws create their own hole, and their own thread in one action. This is probably where the confusion with self-tappers comes in – both kinds of screws are technically self-tapping as far as the function of their threads are concerned, but the massive difference is in the function of their points.Self-drillers are also commonly called ‘Tek’ screws, a proprietary brand name associated with their unique shape and function.

Specifications:

• Thread Diameter: M4.2 (4.2mm)
• Thread Length from under the head: 25/32/38mm
• Material: Stainless steel
• Screw Finish: Grey
• Screw Point Type: Self-Drilling
• Screw Head Type: Flat Head/ Countersunk
• Pack Quantity: 50PCS/300pcs

Features:

• Stainless Steel Self Drilling Screw provide high pullout strength, shear strength and maximum thread engagement and positive fastening in both structural steel and timber constructions. It is more economical to use self-drilling screws than to drill, tap and fasten or nut and bolt in the traditional manner.
• With a point “like a drill bit”, these screws create their own hole, and their own thread in one action. This is probably where the confusion with self-tappers comes in – both kinds of screws are technically self-tapping as far as the function of their threads are concerned, but the massive difference is in the function of their points.
• Self-drillers can be characterised as a fine thread or a coarse thread, self-tappers can’t.
• In short, self-tappers can’t drill, self-drillers can as well as tap a thread.
• Self-drillers are also commonly called ‘Tek’ screws, a proprietary brand name associated with their unique shape and function.
• Drill point sizes dictate drilling capacity. Common Tek point sizes are #2, #3, #4 and #5 (Series 500) – 2 and 3 most common, 4 and 5 for going through thicker metal.