Brass Copper Bronze H59 H62 Round Head Knurled Thumb Machine Screw Bolt

Product Description

Brass Copper Bronze H59 H62 Round Head Knurled Thumb Machine Screw Bolt is recommended for tool-free covers and inspection panels and related OEM fastening projects where Brass, Plain, and Round need to match the final assembly rather than a generic stock screw.

Typical Applications

• Tool-free covers and inspection panels.
• Camera, optical and test fixtures.
• Adjustable equipment assemblies and serviceable hardware.

Parameter Notes for RFQ Review

• Brass, copper or bronze options suit decorative hardware, electrical contact considerations and corrosion-sensitive assemblies.
• Plain, polished or passivated finishes are suitable when the base material appearance and clean surface are preferred.
• A pan, round or button head provides a visible bearing surface and is easier to inspect after assembly.
• The listed thread range (M2.5 M2.6 M2.9 M3.5 M3.9 M4.2 M4.8 M5.5) indicates which metric or gauge families can be reviewed for the same product style. The length range (10-55mm) 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 tool-free covers and inspection panels, camera, optical and test fixtures, with review of material (Brass), finish (Plain), thread range (M2.5 M2.6 M2.9 M3.5 M3.9 M4.2 M4.8 M5.5) and length (10-55mm). 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 Brass / Plain direction and confirm any changes in the RFQ.
• Is this suitable for tool-free adjustment? Thumb screw geometry is intended for repeated hand operation, covers, fixtures and adjustable hardware. Confirm grip diameter, clearance and thread engagement before production.
• What RFQ information helps speed up quotation? Provide thread size (M2.5 M2.6 M2.9 M3.5 M3.9 M4.2 M4.8 M5.5), length (10-55mm), 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.