China Slotted Head Screws Manufacturer, Supplier, Factory

Slotted Head Screws: Precision Engineering for Demanding Applications

When it comes to reliable and straightforward fastening solutions, Slotted Screws have been a fundamental component in countless industries for decades. Their classic slotted drive design offers a simplicity that is unmatched, making them a go-to choice for applications where a standard screwdriver is the primary tool. These Slotted Screws are engineered for precision, providing a secure hold in a variety of materials, from soft wood to hardened metals. The enduring popularity of Slotted Screws lies in their versatility and ease of use, ensuring they remain a staple in toolkits worldwide for assembly, maintenance, and repair tasks.


The design of Slotted Head Screws focuses on delivering maximum performance. The single, linear slot is machined to exact tolerances, ensuring a perfect fit for standard flat-head screwdrivers. This minimizes the risk of cam-out when the correct torque is applied, providing a cleaner and more controlled fastening process. Slotted Head Screws are available in a comprehensive range of sizes, materials, and finishes to meet the specific requirements of any project, from delicate electronics to heavy-duty construction.

Detailed Product Specifications

Standard Material & Finish Options:

  • Materials: Stainless Steel (Grade 304 & 316), Carbon Steel, Brass, Aluminum, Alloy Steel.
  • Finishes: Plain, Zinc Plated (Yellow, Blue, or Clear Chromate), Black Oxide, Nickel Plated, Passivated.
  • Corrosion Resistance: Varies by material and finish; stainless steel offers the highest level of protection.
  • Hardness: Rockwell C scale ratings tailored to material (e.g., Carbon Steel: RC 38-45).

Technical Data Table

Size (Nominal) Thread Pitch Head Diameter (mm) Slot Width (mm) Drive Size Standard Lengths (mm)
M2 0.4 3.8 0.4 #0 4, 5, 6, 8, 10
M3 0.5 5.5 0.6 #1 6, 8, 10, 12, 16
M4 0.7 7.0 0.8 #2 8, 10, 12, 16, 20
M5 0.8 8.5 1.0 #2 10, 12, 16, 20, 25
M6 1.0 10.0 1.2 #3 12, 16, 20, 25, 30
M8 1.25 13.0 1.6 #4 16, 20, 25, 30, 40
M10 1.5 16.0 2.0 #4 20, 25, 30, 40, 50

Performance & Compliance Standards:

  • Standards: DIN 84, ISO 1207, ANSI/ASME B18.6.3.
  • Strength Grade: Class 4.8, 8.8, A2-70, A4-80 as applicable.
  • Temperature Range: Performance is stable across a wide range, dependent on base material.
  • RoHS Compliance: All standard finishes are compliant with RoHS directives.

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