Phillips Pan Head Machine Screws with Collars are used primarily for a cross-recessed pan head screw with an integral collar that bears on thin or soft material without a washer. This page lists the industries and assemblies where they are specified, the selection criteria that matter for each application, installation practice, and the cases where a different fastener type is the correct choice. Parts are supplied to DIN 967. Stocked across roughly M3 to M8, they cover general to heavy-duty work.
Typical Applications for Phillips Pan Head Machine Screws with Collar
The most common settings where these are specified:
- Sheet-metal enclosures: covers fixed to thin panels.
- Plastic housings: screws that must not dig into the surface.
- HVAC equipment: duct and casing panels.
- Automotive trim: brackets on painted sheet.
How to Specify Phillips Pan Head Machine Screws with Collar for Your Application
- Size: Match the nominal size to the mating thread or hole. This product spans M3–M8; check the full table below for the exact dimensions of each size.
- Drive & head: Pick the drive (socket, cross, slot) and head style for the tool access and seating surface; a recessed drive resists cam-out under power tools.
- Environment: For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
- Standard: This product is supplied to DIN 967. Quoting the standard on your order guarantees interchangeable dimensions between suppliers.
Installation & Assembly Practice
- Match the driver exactly to the recess (PH ≠ PZ; hex key sizes per ISO 2936) and keep the tool axial — side load is the main cause of stripped drives.
- In tapped holes, engage a thread length of at least 1× the nominal diameter in steel, 2× in aluminum.
- Set power tools to a torque that seats the head without embedding it into the mating surface.
Common Selection Mistakes with Phillips Pan Head Machine Screws with Collar
- Under-sizing the drive for the installation torque — a small recess at high torque strips before the screw is seated.
- Using a countersunk head in thin sheet where the countersink removes most of the load-bearing material.
- Specifying stainless in high-strength duty: A2-70 is roughly class 7 steel, not a 10.9 substitute.
Where Phillips Pan Head Machine Screws with Collar Are Not the Right Choice
Not for high-preload structural joints (use a property-class bolt and nut), and not in thin sheet where a self-drilling or self-tapping type suits better.
Custom manufacturing · Made to drawing
Need a phillips pan head machine screws with collar outside the standard range?
Material and finish are usually what drives a special — a grade the standard part is not stocked in, or a coating chosen against a salt-spray figure instead of a default. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
