M3.5 M4 Knurled Thumb Screws - China Manufacturer
I stock M3.5 M4 Knurled Thumb Screws designed for fast, tool-free assembly in electronics, machinery, and fixtures. As a China-based Manufacturer, I understand B2B buyers need consistent supply and predictable lead times. My screws feature knurled heads for easy hand-tightening, stainless steel options for corrosion resistance, and a precision thread that fits standard panels without loosening under vibration. I offer M3.5 and M4 sizes in several finish options, with customizable shoulder lengths and zinc plating to meet environmental requirements. Bulk pricing, stable shipments, and QC checks before packing are part of my service. If you are sourcing from a trusted Manufacturer in China, you can rely on my prompt quotes and technical support to select the right screw for your assembly line. I am ready to provide samples, datasheets, and production lead times to help you make a quick decision.
M3.5 M4 Knurled Thumb Screws Factory Industry Leaders
M3.5 and M4 knurled thumb screws are ideal for compact electronics, enclosures, and instrumentation. A leading factory in this field deploys CNC turning, knurling, and heat treatment to deliver tight tolerances and repeatable grip. Materials include stainless steel (A2/A4), brass, and aluminum, with finishes such as passivation, zinc plating, black oxide, or anodizing for corrosion resistance. Custom knurl patterns, head styles, and drive options enable precise torque, retention, and aesthetics for prototypes or mass production. For global buyers, stable supply and traceability matter as much as price. A capable supplier offers ISO-aligned manufacturing, RoHS/REACH compliance, 100% inspection, and batch traceability. Flexible lead times, sensible MOQs, and ready packaging support smooth logistics and regulatory compliance. With proactive communication, optional dual sourcing, and scalable capacity, this approach helps teams accelerate launches while maintaining consistent quality worldwide.
{ M3.5 M4 Knurled Thumb Screws Factory Industry Leaders}
| SKU | Size | Length (mm) | Head Type | Knurling Pattern | Material | Finish | Thread (D × Pitch) | Tensile Strength (MPa) | Temperature Range (°C) | Compliance |
|---|---|---|---|---|---|---|---|---|---|---|
| KRS-M35-304-01 | M3.5 | 8 | Knurled Thumb | Diamond | 304 Stainless Steel (A2) | Satin | M3.5 × 0.50 | 520 | -40 to 120 | RoHS, REACH |
| KRS-M35-316-02 | M3.5 | 12 | Knurled Thumb | Diamond | 316 Stainless Steel (A4) | Passivated | M3.5 × 0.50 | 550 | -50 to 200 | RoHS, REACH |
| KRS-M35-BR-03 | M3.5 | 6 | Knurled Thumb | Cross | Brass | Nickel Plated | M3.5 × 0.60 | 190 | -20 to 120 | RoHS |
| KRS-M4-304-04 | M4 | 10 | Knurled Thumb | Diamond | 304 Stainless Steel | Satin | M4 × 0.70 | 540 | -40 to 150 | RoHS, REACH |
| KRS-M4-316-05 | M4 | 16 | Knurled Thumb | Diamond | 316 Stainless Steel | Passivated | M4 × 0.70 | 600 | -60 to 180 | RoHS, REACH |
| KRS-M4-NYL-06 | M4 | 25 | Knurled Thumb | Smooth | Nylon 6/6 | Natural | M4 × 0.70 | 120 | -40 to 120 | UL94 V-2 |
| KRS-M3.5-NYL-07 | M3.5 | 14 | Knurled Thumb | Diamond | Nylon 6/6 | Natural | M3.5 × 0.60 | 90 | -20 to 80 | UL94 V-2 |
| KRS-M4-BR-08 | M4 | 8 | Knurled Thumb | Diamond | Brass | Nickel Plated | M4 × 0.70 | 190 | -20 to 120 | RoHS |
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