Colored aluminum alloy 6061 hexagon socket screw (oxidized umbrella head screw/bolt) is a fastener that combines beauty and functionality. The following is a detailed description of its customization requirements, which is comprehensive and focused.
1. Core parameter requirements
Material
Aluminum alloy grade: 6061-T6 (to ensure strength and corrosion resistance).
Optional color oxidation type
Regular colors of anodizing: black/silver/gold/red/blue/green, etc., Pantone color number or physical sample must be provided.
Hard oxidation: suitable for high-wear-resistant scenes, with fewer color options.
Specifications and models
Nominal diameter: M2.5, M3, M4, M5, M6, M8, and the thread length or full or half thread requirements must be specified.
Head type: hexagon socket with hexagon.
Length range: Common lengths are provided according to the diameter (such as M3×5mm~50mm), and non-standard lengths must be confirmed separately.
Surface treatment
Anodized film thickness: ≥10μm, salt spray test ≥500 hours.
Color consistency: color difference within batch ΔE≤1.5.
Optional additional processes: sandblasting, matte effect, and bright surface polishing.
2. Key performance indicators
Mechanical properties
Tensile strength: ≥310 MPa.
Torque requirements: Provide recommended installation torque values for each specification (such as M4 screws recommended torque 1.2~1.5 N·m).
Tolerance standard
Thread accuracy: 6g (GB/T 197 standard).
Head diameter/height tolerance: ±0.1mm (non-standard needs to be marked).
Special needs
Anti-loosening treatment: Optional nylon glue pre-coating or double spiral locking structure.
Non-standard head type: If you need to increase the contact surface or adjust the groove depth, you need to provide a drawing.
3. Customization process description
Confirm the requirements
Provide a specification list (including diameter, length, quantity, and color code). Non-standard designs require submission of CAD drawings or 3D models (STEP/IGS format).
Proofing and acceptance
Proofing cycle: 5~7 working days (3~5 colors/specifications).
Acceptance criteria: size (three-dimensional detection), color difference (spectrometer), and salt spray test report.
Mass production and delivery
MOQ: usually 500~1000 pieces/specification (non-standard parts are negotiated separately).
Delivery cycle: 15~30 days (depending on quantity and process complexity).
Packaging: scratch-resistant PE bag + paper box, or customized labels/blister trays according to customer requirements.
4. Precautions
Color restrictions
Dark colors are prone to scratches after oxidation. It is recommended to give priority to matte treatment. Special colors, such as fluorescent colors, need to confirm the feasibility of the process (may require outsourcing electrophoresis).
Material alternatives
If higher strength is required, 7075 aluminum alloy is recommended (but the oxidation color is darker).
Corrosion resistance requirements: It is recommended to thicken the oxide layer or use stainless steel (the weight must be weighed).
Document support
Material certification (SGS) and RoHS/REACH compliance declaration must be provided.
V. Recommended application scenarios
Precision instruments, electronic equipment (such as PCB fixing).
Outdoor lighting, drones (lightweight + weather resistance).
Automotive modification parts (vibration resistance requirements must be indicated).
If further optimization of details is required, it is recommended to provide specific application scenarios for accurate matching solutions.
