This page explains how Self-Tapping Screw is classified within Fabricated Metal Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A self-tapping screw is a fastener that creates its own mating thread when driven into a pre-drilled hole in materials like metal, plastic, or wood.
Technical details and manufacturing context for Self-Tapping Screw
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Thread Size | ST2.2–ST8.0 mm | Nominal thread diameter range for standard self-tapping screws.ISO 1478 |
| Length | 4–100 mm | Typical length range; custom lengths available.ISO 1478 |
| Thread Pitch | 0.8–2.5 mm | Pitch varies with thread size.ISO 1478 |
| Hardness | HV 450–560 HV | Core hardness for carbon steel screws.ISO 898-5 |
| Tensile Strength | 800–1200 MPa | Typical tensile strength for hardened carbon steel.ISO 898-5 |
| Surface Finish | Zinc plating, black oxide, phosphate | Common finishes for corrosion resistance.ISO 4042 |
| Corrosion Resistance | 72–500 hours | Salt spray test duration depending on coating thickness.ISO 9227 |
| Drive Type | Phillips, Pozidriv, Torx, Hex | Common drive configurations. |
| Head Type | Pan, flat, oval, truss | Standard head styles per ISO 1478. |
| Point Type | Type AB, B, C | Point style determines cutting vs. forming ability.ISO 1478 |
| Thread Forming Torque | 0.5–5.0 N·m | Typical driving torque for sizes ST3.5–ST6.3. |
| Pull-out Strength | 200–1500 N | Depends on substrate and screw size. |
| Tolerance | ±0.05 mm | Diameter tolerance for thread sizes up to ST8.ISO 1478 |
| Operating Temperature | -40 to 120 °C | Typical range for coated carbon steel. |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
A practical evidence checklist for RFQ preparation and supplier evaluation.
Compare the published product scope and source details, then include your specifications and quantity in an enquiry.
12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
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Common materials include carbon steel (e.g., 1022, 10B21), stainless steel (e.g., 304, 410), alloy steel (e.g., 4037), brass, and aluminum. The choice depends on the application's strength and corrosion requirements.
Thread size (ST2.2–ST8.0) and length (4–100 mm) are specified per ISO 1478. Selection depends on the substrate thickness and required pull-out strength. Always consult the manufacturer for specific application data.
Thread cutting screws remove material to create a thread, while thread forming screws displace material. Point types (AB, B, C) indicate the cutting or forming ability. The choice depends on the substrate material and hardness.
Relevant standards include ISO 1478, DIN 7970, GB/T 5280, SAE J933, and ASTM F837. These define dimensions, mechanical properties, and testing methods. Verify compliance with the supplier.
Commonly used trade names and technical identifiers for Self-Tapping Screw.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
Compare manufacturer profiles with relevant product and process capability.