Carbon Steel Grade Class 4.8 8.8 10.9 12.9 Brass Bronze Copper H59

Product Description

Carbon Steel Grade Class 4.8 8.8 10.9 12.9 Brass Bronze Copper H59 is recommended for sheet metal cabinets and welded panels and related OEM fastening projects where Carbon Steel, Copper Plated, and Flat need to match the final assembly rather than a generic stock screw.

Typical Applications

• Sheet metal cabinets and welded panels.
• Stud welding or projection welding workflows.
• Metal enclosures needing fixed threaded points.

Parameter Notes for RFQ Review

• Carbon steel is a cost-effective option for strength-focused assemblies and can be paired with protective finishes.
• Copper plating can support weldability, conductivity or visual identification depending on the assembly.
• A flat or countersunk head is selected when the screw needs to sit flush with the surface.
• The listed thread range (M3 M4 M5 M6) indicates which metric or gauge families can be reviewed for the same product style. The length range (9-35mm) should be checked against clamping thickness, thread engagement and clearance behind the assembly.
• Drive note: Drive type to be confirmed from drawing or sample. Confirm driver access, assembly torque and whether service teams need matching tools.

Suitable OEM / RFQ Needs

Best fit for OEM/RFQ buyers who need sheet metal cabinets and welded panels, stud welding or projection welding workflows, with review of material (Carbon Steel), finish (Copper Plated), thread range (M3 M4 M5 M6) and length (9-35mm). Send drawings, target quantity, application load/environment and any sample photos for a practical quotation.

Buyer Questions

• Can this product be customized from a drawing or sample? Yes. XiYu can review drawings or samples for custom dimensions, material, finish, head style and production quantity. For this item, start from the listed Carbon Steel / Copper Plated direction and confirm any changes in the RFQ.
• What should be checked before ordering weld screws? Confirm base material, welding method, sheet thickness, weld area, thread size and any pull-out or torque requirement. A welded sample check is recommended before bulk production.
• What RFQ information helps speed up quotation? Provide thread size (M3 M4 M5 M6), length (9-35mm), material, finish, drawing or photo, target quantity, application environment and whether samples are required.
• Can samples be reviewed before bulk production? Sample review can be discussed for custom or production RFQs. For appearance-critical or functional screws, sample approval helps confirm finish, fit and assembly behavior before mass production.