PrecisionGeek® M5 Stainless Steel 303 Knurled Thumb Screws, CNC Machined Corrosion Resistant Fasteners for Automotive, Woodworking, DIY Projects and Custom Fabrication (Flat - 15mm - 5 Pack)

• 📐 M5 STAINLESS STEEL KNURLED THUMB SCREWS — FLAT OR SHOULDER HEAD — Thread M5, available in 10mm and 15mm lengths. Choose Flat Head for a flush, low-profile finish or Shoulder Head for a raised collar grip easier to grasp in recessed positions. Knurled head precision-cut for secure finger grip without tools. Available in 5 or 10 piece packs.
• 🏭 CNC MACHINED FROM SOLID STAINLESS STEEL AISI 303 — MADE IN THE EU — Every screw is precision-turned from solid Stainless Steel 303 bar stock in our European workshop. Solid stainless throughout — no coatings, no plating, no surface treatment that can chip or wear away. Stronger and heavier duty than M3 or M4 equivalents — suited to higher load applications.
• 🔧 IDEAL FOR AUTOMOTIVE, WOODWORKING, DIY AND CUSTOM FABRICATION — Designed for heavier duty applications requiring tool-free access with a larger M5 thread: automotive panels and covers, woodworking jigs and fixtures, custom fabrication projects, machinery guards, workshop equipment and any application where M3 or M4 threads are insufficient.
• ✴️ TWO HEAD STYLES FOR DIFFERENT MOUNTING REQUIREMENTS — Flat Head sits flush against the surface for a clean, unobtrusive finish ideal for tight spaces and panel mounting. Shoulder Head features a raised collar that lifts the knurled grip away from the surface, making it easier to grasp in recessed or countersunk applications. Select your preferred style from the variant menu.
• ⚙️ HAND TIGHTEN IN SECONDS — COMPATIBLE WITH ALL STANDARD M5 FIXINGS — Wide knurled head delivers firm, rattle-free clamping force by hand. Fully compatible with standard M5 nuts, brass threaded inserts, stainless steel inserts and tapped holes in aluminium, steel, acrylic and wood. No tools required for installation or removal.
• 🛡️ CORROSION RESISTANT — SUITABLE FOR OUTDOOR AND HIGH-HUMIDITY USE — Stainless Steel 303 offers excellent resistance to moisture, humidity, mild chemicals and outdoor atmospheres. Ideal for garden structures, outdoor signage, coastal environments and any application where standard carbon steel would corrode or stain.
• ✅ PRECISIONGEEK — REGISTERED EU BRAND, CONSISTENT QUALITY — PrecisionGeek specialises in CNC machined stainless steel, aluminium and brass components. Every batch is inspected for thread quality and dimensional accuracy before dispatch. Designed and machined in Europe — what you see in the listing is exactly what you receive.
• 📦 AVAILABLE IN 5 OR 10 PIECE PACKS — SELECT HEAD STYLE, LENGTH AND QUANTITY — Choose your preferred head style, thread length and pack size from the variant selector above. Supplied in a resealable pack, ready to use straight from the box. Compatible with all standard M5 threaded holes, nuts and inserts.
• 📦 SET OF 5 — READY TO USE STRAIGHT FROM THE BOX — Supplied in a resealable pack of 5 screws in your chosen colour. Compatible with all standard M3 threaded holes, nuts and inserts. Select your colour from the variant menu above. Designed and machined in Europe by PrecisionGeek.

The PrecisionGeek M5 x 15mm Flat Head Thumb Screws offer a high-quality, tool-free fastening solution for electronics, enclosures, robotics, and custom builds. This set of 5 stainless steel screws features flat 10mm heads for a low-profile finish that fits neatly into compact assemblies. Built for durability and resistant to corrosion, these thumb screws allow easy manual adjustment—perfect for setups that require regular access or reconfiguration. Whether used in PC case modding, speaker systems, or engineering projects, their clean design and precise fit ensure professional results. Manufactured in the EU, they meet strict standards for performance, consistency, and appearance. Knurled head provides extra finger grip for manual tightening. Thumb screws are designed to be tightened and loosened by hand. Tools are not required for tightening or loosening. Set of 5 screws -----------PrecisionGeek are very proud that our stainless steel and aluminium fittings are all made in-house on our own Star CNC Machines. From speaker spikes to banjo bolts — everything is machined from solid stainless steel and other quality grade metals to exact specifications meaning that quality control is maintained throughout the manufacturing process. It means we can react to new demands, improve and assess each component and offer the best quality solution to any requirement. It also means that we can react to new products required immediately — If you feel there is a new product which we could add to our catalogue please get in touch and we will be happy to offer a quotation. All manufactured in the EU on our own machinery — It's very rare today when many items are simply bought in. We are a company that actually cuts its own metal in-house.