Custom Phillips Flat Head Screws Stainless Steel Flat Head Machine Screw

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Custom Phillips Flat Head Screws Stainless Steel Flat Head Machine Screw

What Are Phillips Flat Head Screws?

Phillips flat head screws are a type of fastener with a flat, countersunk head and a Phillips drive recess (cross-shaped). They are designed to sit flush with or below the surface of the material, providing a smooth finish.

Materials

Phillips flat head screws are made from various materials depending on strength and environmental needs:

Surface Finishes

Specifications & Types

Phillips flat head screws are categorized by head type, thread, and drive style :

A. Standard Phillips Flat Head Screw (ISO 2009 / DIN 963)
Head: Flat, countersunk (82° or 90° angle)
Drive: Phillips (PH) recess (PH0, PH1, PH2, PH3)
Thread: Fully or partially threaded
Sizes:
Diameter: #2 to #14 (imperial), M2 to M12 (metric)
Length: 1/4″ to 4″ (varies by application)

B. Self-Tapping Phillips Flat Head Screw
Thread: Sharp, self-drilling tip for metal/plastic
Used in: Sheet metal, automotive, electronics

Applications

Woodworking: Furniture assembly, cabinetry (flush mounting)
Metal Fabrication: Automotive panels, machinery covers
Electronics: Securing circuit boards, enclosures
Plumbing & HVAC: Mounting fixtures, ductwork
Marine & Outdoor: Stainless steel screws for boats, docks

Real-World Examples

Furniture Assembly: #8 x 1-1/2″ zinc-plated ones secure wooden table legs.
Automotive Panels: M4 x 12mm stainless steel ones attach trim pieces.
Electronics: M3 x 6mm black oxide ones fasten PCB mounts.
Outdoor Decking: #10 x 2″ 316 stainless steel ones for corrosion-resistant fastening.

Installation Tips

✔ Pre-drill pilot holes in hard materials to prevent splitting.
✔ Use the correct Phillips driver size (PH1, PH2, etc.) to avoid stripping.
✔ Countersink the hole for a flush finish.