Self Drilling Stainless Steel Screws Flat Head M4.2x25mm 50PCS/300PCS
At Tradersofoz Australia, we stock the M4.2 x 25mm Stainless Steel Drilling Button 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 is 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: 25mm
- 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 provides 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 is concerned, but the massive difference is in the function of their points.
- Self-drillers can be characterized 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.
