Self-drilling screws
Self-drilling screws drill, tap, and fasten in one operation. We review the thickness to be drilled, the application, and the specification before quoting.
What it is and how it works
Self-drilling screws with a point that drills the hole before the thread advances into the assembly. Also called drill-point screws or self-drilling tapping screws.
How it works
The point works like a drill bit; the thread then engages and fastens. Thickness, material, and point geometry affect the review.
What sets it apart
The visible self-drilling point distinguishes it from families that require a pre-drilled hole or a thread-cutting point.
When it's typically considered
Considered when the process calls for drilling and fastening in a single operation and the application defines the material to drill through.
Substrate and application
Sheet metal or component assemblies where the material and stack thickness are documented.
KEY POINTS TO SPECIFY
Use these references to describe your part and fill in only what you already know.
Documented designations include 4-24, 5-20, 6-20, 7-19, 8-18, 10-16, 12-14, 1/4-14, and 5/16-12. Specify the point and thickness per the drawing or application.
What to send
Share the part number, drawing, or sample part, plus the dimensions, estimated quantity, and any known requirements. If something is still to be defined, note it in your request.
What helps us quote
Drawing, part number, or sample part, material and thickness to be drilled, thread designation, length, point, screw material, finish, and quantity.
What each team can bring
Purchasing
Share the volume, finish, part number, and program supply terms.
Engineering
Specify the stack materials and thicknesses, designation, length, head, drive, and point if shown on the drawing.
Quality
Include any drilling, installation, heat treatment, or test requirements from your specification.
Key points to specify
Thread, profile, and point
Thread size
View head and drive references
These references help describe your part. The full list is available in the quote request.
Head styles
Flat head 100°
Flat head 82°
Flat undercut head
Flat top head
Binding head
Binding undercut head
Button head
Cheese head
Fillister head
Fillister head (cap screw)
Indented hex washer head
Indented hex head
Indented hex flange washer head
Oval head
Oval undercut head
Pan head
Pan washer head
Round head
Round washer head
Truss head
Truss washer head
Low-profile truss head
Wafer headDrive types
Torx-style 6-lobe drive
Security Torx-style 6-lobe (tamper-resistant)
Slotted
Square drive
Combination drive (square + Phillips)
Combination drive (square + Phillips + slotted)
Combination drive (Phillips + slotted)
Combination drive (square + slotted)
Phillips
Pozidriv (Type IA)
Allen-style hex socket drive
Security Allen-style hex socket (tamper-resistant)Under-head features
Full serrations
Nibs under head
ShoulderMaterial and finish
Enter the material, grade, and finish, or attach the specification. If you don't know them yet, you can leave them open.
Materials
Finishes
Fill in what you already know.
You don't need to fill in everything now. Your selections carry over when you continue.
If yours isn't listed, choose "Other specification."
Most common lengths. If yours isn't listed, choose "Other specification."
Measured under the head, except for flat countersunk heads (overall length) and oval heads (from the edge of the countersink). If your drawing uses a different reference, note it under additional requirements.
Head
Drive
Drill point
It depends on the metal thickness to drill. If you're not sure, enter the thickness and we'll choose the point.
Add up all the metal layers. E.g., 2 mm or 0.075 in.
You can continue with this family and fill in the rest later.
Continue your requestSend us your requirements. We'll review them and follow up.
You can start with a drawing, a specification, a sample part, a part number, or a description.