Self-tapping screws have a self-tapping thread design, with sharper threads and larger pitches, and can be screwed directly into the material to cut out internal threads without pre-tapping. It is an economical and affordable threaded fastener.
51Fasteners specializes in supplying high quality self-tapping screws. We support customization of self-tapping screws of various materials, specifications, functions, drive types, head shapes, and uses. We provide one-stop industrial fastener procurement to save your valuable time.
- Compliant with standards
- Smooth surface
- Sharp screw threads
- Even force distribution
- High-quality materials
- Complete range of specifications
- Fast delivery
- Customizable
Specifications
| Size | M1 to M10; #2, #4, #6, #8, #10, #12, 1/4, 5/16, 3/8 |
| Length | 2 to 4″; |
| Thread | UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread, Coarse thread, Fine thread |
| Materials | Carbon steel, stainless steel, aluminum, titanium, brass and special materials. |
| Strength | Grade: 4.8, 6.8, 8.8, 10.9, 12.9; A2-70, A2-80, A4-70, A4-80 |
| Head Types | Hex washer head, flat countersunk, pan head, truss head, etc. |
| Packing | Small box + carton +pallet, custom packaging service. |
Surface Finishing
| Hot-dip Galvanizing | Black Oxide | Nickel Plating | Phosphating | Polishing | Dacromet |
| Black Zinc Plating | White Zinc Plating | Stainless Steel Passivation | Mechanical Galvanizing | Color Zinc Plating | Chrome Plating |
| Powder Sherardizing | Olive Zinc | Copper Plating | Composite Plating | Electrophoresis | Baking Paint |
| Rustban Coating | Silver Plating | Cadmium Plating | Gold Plating | Zinc-Nickel Alloy | Electroless Nickel |
| Teflon (PTFE) | Atotech | QPQ | Cleaning | Nylok (Nyseal) | Magni Coating |
| Anodizing | Adhesive Coating | Zinc-Aluminum-Magnesium | Blue Zinc Plating | Yellow Zinc Plating | Zinc-Cobalt Alloy |
How to Install Self-Tapping Screws?
- Step 1: Drill holes
- Step 2: Clean holes
- Step 3: Screw in
Self-Tapping Screws Vs. Self-Drilling Screws Comparison
Self-tapping screws can only be used on pre-drilled holes or soft materials.
| Item | Self-Tapping Screws | Self-Drilling Screws |
|---|---|---|
| Has Drill Bit | ❌ No | ✅ Yes |
| Requires Pre-Drilling | ✅ Yes (in most cases) | ❌ No |
| Installation Efficiency | Moderate | Higher (completed in one step) |
| Suitable Materials | Plastic, thin sheet metal, etc. | Metal, wood, steel structures |
| Tools Required | Screwdriver, electric screwdriver | Electric drill, impact screwdriver |
| Usage Scenarios | General structural connections | Steel structures, construction panels |
| Cost | Slightly lower | Slightly higher |
Self Tapping Screw Production Process
Cross-Slotted Self-Tapping Screw
The cross-recessed self-tapping screw has a cross groove on its head and a sharp and wide thread, and can be installed using a cross screwdriver. 51fasteners offers a variety of head shapes, including pan head, flat head and oval head. Available sizes include #2, #4, #6, #8, #10, #12, 1/4, 5/16, and 3/8, with custom sizes also available.
Cross Washer Head Tapping Screw
- Diameter: ST3.5-ST4.8
- Length: 13-100mm
Phillips Pan Head Tapping Screw
- Diameter: ST3.0-ST46.0
- Length: 6-100mm
- Standard: DIN 7981, JIS B 1122, ANSI B 18.6.4, ISO 7049
Cross Countersunk Head Tapping Screw
- Diameter: ST3.0-ST46.0
- Length: 6-100mm
- Standard: DIN 7982, ISO 7050
Truss Head Phillips Tapping Screw
- Diameter: ST3.0-ST6.0
- Length: 6-100mm
Hex Self-Tapping Screws
Countersunk Hex Self-Tapping Screw
Hexagon Socket Head Self-Tapping Screw
Cylindrical Allen Head Self Tapping Screw
Torx Self-Tapping Screws
Torx Countersunk Self-Tapping Screw
Torx Pan Head Self-Tapping Screw
Slotted Self-Tapping Screws
Slotted Pan Head Self Tapping Screw
Slotted Raised Countersunk Self Tapping Screws
Customize Your Self-Tapping Screw Color
Select Self-Tapping Screws for Your Project
- Electrical appliance casing fastening: switch boxes, control panels
- Automobile manufacturing: interior parts assembly.
- Wooden furniture: furniture installation, aluminum alloy door and window assembly
- Electronics: circuit board fastening.
- Construction industry: fastening for thin steel connections and color steel plate installation.
- Mechanical manufacturing: mechanical casings for thin metal shells, equipment parts.
Self-Tapping Screws for Brick
Self-Tapping Screw for Deck
Chipboard Screws
