Overview
ISO 2010:2011 - "Slotted raised countersunk head screws - Product grade A" is an international standard that specifies the characteristics, dimensions and basic requirements for countersunk slotted raised head screws of product grade A with metric threads from M1.6 to M10 inclusive. It defines dimensional data, nominal lengths, thread pitches and references the applicable mechanical property, tolerance and finishing standards used for manufacturing, inspection and procurement of these fasteners.
Key topics and requirements
- Scope: Covers raised countersunk (bugle-type) slotted head screws, product grade A, threads M1.6–M10.
- Dimensions and tolerances: Detailed dimensional tables (head, shank, thread length and related symbols per ISO 225) and preferred lengths. Typical thread pitches shown range from 0.35 mm to 1.5 mm depending on size.
- Material and mechanical properties: Steel, stainless steel and non‑ferrous options are covered. Recommended property classes include 4.8, 5.8 (steel) and A2‑50, A2‑70 (stainless steel), with mechanical-property requirements referenced to ISO 898‑1, ISO 3506‑1 and ISO 8839.
- Thread and tolerance classes: Uses general-purpose metric threads per ISO 261 / ISO 965‑2 and tolerance class 6g for external threads. Product grade tolerances follow ISO 4759‑1.
- Surface finish and coatings: Electroplating and passivation practices are referenced (ISO 4042, ISO 16048); non‑electrolytically applied zinc flake coatings per ISO 10683. Surface discontinuity limits per ISO 6157‑1.
- Acceptance and inspection: Acceptance inspection is specified by ISO 3269.
- Designation example: "Countersunk raised head screw ISO 2010 - M5 × 20 - 4.8" (indicates standard, thread size, nominal length and property class).
Applications and users
- Typical users: fastener manufacturers, component suppliers, product designers, mechanical engineers, procurement and quality inspection teams.
- Typical applications: assemblies requiring a flush countersunk finish with a raised head profile and slotted drive - consumer products, electronics, machinery, light‑duty structural joints and repair parts where metric small‑screw sizes (M1.6–M10) are used.
- Practical benefits: ensures interchangeability, consistent mechanical performance, agreed tolerances and appropriate surface finishes for corrosion resistance and assembly reliability.
Related standards
Keywords: ISO 2010, slotted raised countersunk head screws, product grade A, M1.6–M10, fastener dimensions, mechanical properties, screw tolerances.
