I’m your go-to source for Thumb Screws m4x8.5, engineered for fast, precise assembly in demanding environments. As an ODM Factory partner, we can tailor finishes, materials, and threading to fit your application and production line. Our Thumb Screws deliver corrosion resistance with stainless steel options and grip-friendly knurls for easy hand-assembly, even in tight spaces. We maintain tight tolerances and repeatable performance across high-volume runs, backed by QA checks and datasheets to support your BOM and QC processes. Whether you need standard stock or a customized solution, we can scale quickly to meet ODM needs and deliver competitive lead times. We collaborate closely with your design teams to ensure compatibility with tools, enclosures, or equipment housings. Place your trust in a supplier who understands factory demands, from sample to mass production. Contact us to discuss specs, packaging, and certification.
Thumb screws m4x8.5 are compact, finger-friendly fasteners ideal for electronics enclosures, panels, and mounting assemblies. The 4 mm thread with an 8.5 mm grip length enables secure, tool-free adjustments and repeatable removal. Available in stainless steel for corrosion resistance, zinc-plated steel for cost efficiency, and high-strength polymers for lightweight or non-conductive needs, they can be specified to RoHS standards. Service backed by expertise means more than parts. It combines design support, rapid prototyping, and rigorous quality control. In-house machining delivers tight tolerances and consistent surface finishes, while traceable materials and testing ensure reliability. Global logistics provide flexible MOQs, scalable production, and on-time delivery to manufacturers, contract assemblers, and distributors worldwide—from sample to full-scale production.
| Product ID | Material | Finish | Thread | Length (mm) | Head Type | Head Diameter (mm) | Knurl Diameter (mm) | Drive Type | Max Torque (N·m) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| A4-001 | Stainless Steel 304 | Satin | M4 x 0.7 | 8.5 | Knurled Thumb | 11.0 | 7.8 | Hex Socket | 1.20 | DIN 916 | RoHS Compliant |
| A4-002 | Stainless Steel 316 | Black Oxide | M4 x 0.7 | 12.0 | Knurled Thumb | 11.0 | 8.0 | Slotted | 0.90 | DIN 916 | RoHS Compliant |
| A4-003 | Brass CW 614 | Satin | M4 x 0.7 | 8.5 | Knurled Thumb | 9.0 | 6.5 | Phillips | 0.75 | DIN 916 | RoHS Compliant |
| A4-004 | Stainless Steel 304 | Polished | M4 x 0.7 | 15.0 | Knurled Thumb | 12.0 | 7.5 | Hex Socket | 1.60 | DIN 916 | RoHS Compliant |
| A4-005 | Stainless Steel 304 | Satin | M4 x 0.7 | 6.0 | Knurled Thumb | 9.0 | 6.0 | Slotted | 0.60 | DIN 916 | RoHS Compliant |
| A4-006 | Stainless Steel 316 | Black Passivate | M4 x 0.7 | 25.0 | Knurled Thumb | 14.0 | 7.9 | Hex Socket | 2.20 | DIN 916 | RoHS Compliant |
| A4-007 | Stainless Steel 304 | Satin | M4 x 0.7 | 20.0 | Knurled Thumb | 12.0 | 7.0 | Torx T6 | 1.80 | DIN 916 | RoHS Compliant |