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Standard pan head screws pull through soft materials, sink into plastic panels, and leave visible marks on finished surfaces. The truss head (mushroom head) profile on these 304 stainless steel Phillips machine screws solves that problem with an extra-wide, low-profile bearing surface that distributes clamping force over a significantly larger area — reducing pull-through risk and surface damage without adding height. Available in M4, M5, and M6 with lengths from 6mm (0.24”) to 50mm (1.97”).
Each screw is made from 304 (18-8) stainless steel for reliable corrosion resistance without the brittleness of plated steel. The Phillips drive is compatible with standard PH2 screwdrivers and power drivers. Pack sizes from 10 to 200 pieces let you order exactly what you need — from a single repair to a full workshop stock.
Typical applications include electronics enclosure and panel mounting where pull-through resistance matters (M4–M5), plastic housing and soft-material fastening (M4–M6), general-purpose DIY and workshop projects, outdoor furniture and sheltered fixture assembly, and replacement fasteners in appliances and equipment where a wide-head screw is specified.
| Material | 304 Stainless Steel (18-8 / A2) |
|---|---|
| Finish | Natural stainless (no coating) |
| Thread Standard | ISO Metric |
| Thread Diameters | M4, M5, M6 |
| Head Style | Truss Head (Mushroom Head / Wide Pan Head) |
| Drive Type | Phillips — PH2 (M4–M5) / PH2–PH3 (M6) |
| Available Lengths | 6mm (0.24”), 8mm (0.31”), 10mm (0.39”), 12mm (0.47”), 16mm (0.63”), 20mm (0.79”), 25mm (0.98”), 30mm (1.18”), 35mm (1.38”), 40mm (1.57”), 50mm (1.97”) |
| Pack Sizes | 10 / 20 / 50 / 100 / 200 pcs |
| Screw Type | Machine screw (requires tapped hole or nut) |
| Length Measurement | Excluding head (shaft length only) |
| Corrosion Resistance | Excellent — suitable for indoor and light outdoor use |
| Common Applications | Electronics enclosures, panel mounting, plastic housings, outdoor furniture, general DIY, appliance repair |
Measure the depth of the tapped hole or the thickness of the material being clamped. The screw length (excluding head) should engage at least 1.5× the thread diameter — at least 6mm for M4, 7.5mm for M5, and 9mm for M6. Available lengths: 6mm (0.24”) to 50mm (1.97”). When in doubt, size up.
A truss head (also called a mushroom head or wide pan head) is wider and lower in profile than a standard pan head. The extra-wide bearing surface distributes clamping force over a larger area, making it ideal for soft materials (plastic, wood, foam), thin panels, and applications where pull-through resistance is important. Use a truss head when a standard pan head would sink into or pull through the material.
304 stainless steel (also called 18-8 or A2 stainless) is the most widely used grade of austenitic stainless. It offers excellent corrosion resistance, is non-magnetic in most conditions, and is the standard material for general-purpose stainless fasteners in electronics, appliances, and light outdoor use.
304 stainless steel provides strong corrosion resistance and will not rust under normal indoor conditions or light outdoor exposure. For marine, coastal, or highly corrosive environments, 316 (A4) stainless is generally recommended. These screws are well-suited for electronics, appliances, outdoor furniture, and sheltered applications.
A Phillips PH2 screwdriver is required for M4–M5; PH2 or PH3 for M6. Always use a well-fitting driver — a loose or worn bit will cam out, especially when applying higher torque on larger sizes. A power driver with a PH2 bit is suitable for all sizes in this listing.
Yes — these are machine screws, not self-tapping. They require a pre-tapped M-series hole or a matching metric nut in the same thread size. They will not cut their own thread into plastic or metal.
304 stainless steel typically has a tensile strength of around 500–700 MPa, which is generally sufficient for light-to-medium clamping loads in panels, enclosures, and general DIY. For critical load-bearing applications, verify the specific grade and consult torque specifications for the thread size.
Available in packs of 10, 20, 50, 100, and 200 pieces. Larger packs offer better per-unit value for workshops and production use. Select your preferred quantity using the Quantity option above.
