Home » All products » Self-drilling screw with hex head | FZB | DIN 7504K
Självborrande skruvar i förzinkat stål med sexkantsflänshuvud för snabb och säker infästning i metall och trä.

Self-drilling screw with hex head | FZB | DIN 7504K

In stock 961 items available
SKU: 101240
No reviews
0.30 kr Incl. VAT
Diameter (mm)
Length (mm)
Volume discount for your order
>500 SEK - 5%
>1000 SEK - 5% discount and free shipping
>2000 SEK - 10% off and free shipping
Description

Self-drilling screw FZB with hex head and flange offers an excellent solution for both industrial and household projects. It is made of hardened, electro-galvanized steel capable of drilling into sheet metal and provides basic corrosion protection in dry indoor environments. The screw's hex head ensures an easy grip and smooth installation. The drill point allows for drilling and threading in one step, saving time and labor.

APPLICATION AREA

This self-drilling screw is used for mounting sheet metal to steel profiles, metal, wood, and plastic. It is intended for indoor use and dry, protected environments; for outdoor use, stainless steel or bimetallic screws are recommended. The benefits of using this screw include its ease of installation and long-term durability, which minimizes the need for future maintenance.

TECHNICAL SPECIFICATIONS

Product type: Sheet metal screw
Standard: DIN 7504K
Grade: FZB
Surface treatment: Electro-galvanized (FZB)
Head shape: Hexagonal
Drive type: Hex drive

FREQUENTLY ASKED QUESTIONS (FAQ)

What characterizes a self-drilling screw with a hex head and flange (DIN 7504 K)?

DIN 7504 K is a robust self-drilling screw designed for heavy-duty metal and sheet metal fastening:

  • Integrated flange: The flange under the hex head acts as a built-in washer. It distributes the clamping force over a larger area, providing an extremely strong connection and preventing the screw from pulling through thinner sheet metal.

  • Secure tool grip: The hex head provides optimal torque transfer without the risk of the socket slipping, making it ideal for fast and powerful series installation using an impact driver or drill driver.

  • Three actions in one: The drill point drills the hole, cuts the thread, and tightens the connection in a single continuous movement – completely without pre-drilling.

Why is electro-galvanized steel (FZB) the right material choice for this type of self-drilling screw?

Self-drilling screws require very high material hardness for the point to be able to cut through sheet steel and profiles:

  • Hardened carbon steel: The core and the point are case-hardened to ensure the drill point maintains its sharpness and penetrates steel without deforming.

  • Corrosion protection FZB (C1-C2): The electro-galvanization provides a bright finish and protects the screw against rust in indoor environments, heated premises, dry spaces, and protected building structures.

How to install self-drilling screws with a hex head for best results?

  1. Use the right socket: Use a magnetic hex socket that exactly matches the head's wrench size to keep the screw stable during the drilling phase.

  2. Check material thickness: Ensure that the thickness of the sheet steel or profile does not exceed the screw's drill point length (typically max 3–6 mm depending on screw dimension). If the material is too thick, the threads may catch before the drill point has fully penetrated.

  3. Adjust pressure and speed: Drill with firm, even pressure and let the drill point work at a medium speed. Ease off the pressure slightly as soon as the flange lands against the surface so that you do not over-tighten the thread in the sheet metal.