Bakelite Handle Thumb Screws

 

Bakelite handle thumb screws are essential key accessories for various industrial equipment, mechanical operating levers, and instrument panels. They not only have to withstand frequent manual operations, but also need to adapt to complex environments such as moisture and oil. The stainless steel screws we developed specifically for Bakelite handles are made of high-quality 304/316 stainless steel. Through precision machining technology, we ensure that each screw can provide reliable fastening performance and long-term durability.

In terms of material selection, we insist on using stainless steel that meets the A2-70/A4-80 standard. 304 stainless steel contains chromium and nickel, which can form a dense chromium oxide protective layer on the surface, effectively resisting humid environments and weak acid and alkali corrosion. According to actual measurements, our 316 stainless steel screws can remain rust-free for more than 96 hours in a standard salt spray test, far exceeding the rust-proof performance of ordinary galvanized screws.

Bakelite handles are made of phenolic resin-based composite materials, which have extremely high volume resistivity (usually in the range of 10^12-10^15Ω·cm). This excellent insulation property makes it particularly suitable for electrical control cabinets, high-voltage equipment, and other occasions that require reliable insulation. In terms of wear resistance, the surface of the bakelite handle has been specially hardened, and its Rockwell hardness can reach HRR 110-120. In the actual wear test, after 5000 friction cycles, the surface wear was only 0.05mm. This is mainly due to the wear-resistant fillers added to the material and the special pressing process, which form a dense wear-resistant layer on the surface of the product.

In practical applications, bakelite handle thumb screws show excellent adaptability. Whether it is the frequent rotation of the machine tool operating handle, the high salt spray environment faced by marine equipment, or the high hygiene requirements of food processing equipment, this screw can perfectly meet the requirements.

Why choose our products?
1. We can provide material report (SGS/MSDS) to ensure the components meet the standards.
2. Full process salt spray test + torque test to eliminate thread slippage or rust defects.
3. Supports non-standard dimensions, surface polishing, laser engraving, and other requirements.