Thread-forming tapping screws
Thread-forming tapping screws form the thread without chips. We make Types A, AB, B, and C to specification and review the mating material and application before we quote.
What it is and how it works
Self-tapping screws that form the thread by displacing material, without a cutting slot at the point. Types A, AB, and B are also known as sheet metal screws.
How it works
The profile forms the thread during installation. The exact geometry, pilot hole, and mating material need to be reviewed as part of the requirement.
What sets it apart
The absence of a cutting slot or flute is the documented visual difference from thread-cutting tapping screws.
When it's typically considered
Considered when the application needs to create a thread without using a documented cutting geometry.
Substrate and application
Applications with a pilot hole and a defined mating material; the specific context remains subject to review.
KEY POINTS TO SPECIFY
Use these references to describe your part and fill in only what you already know.
If you know the required designation or profile, state it exactly as shown on the drawing. You can also leave it open.
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, mating material, known designation, dimensions listed separately, and quantity.
What each team can bring
Purchasing
Share the part number, volume, material, and finish, and whether the demand is recurring.
Engineering
Specify the mating material, pilot hole (if known), thread designation or reference, and installation conditions.
Key points to specify
Thread, profile, and point
Type A
Type AB
Type B
Point type
Type C pointView 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.
Choose the thread system or profile on your drawing. If you don't know, choose "Not sure."
Select the tapping screw type first.
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.
Point (if applicable)
Head
Drive
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.