Monster Overview: Equip your precision builds with M4 Button Head Socket Cap Screws from Monster Bolts. Crafted from Class 12.9 black alloy steel and finished in thermal black oxide, these screws combine exceptional strength with a smooth, low-glare appearance. The rounded button head profile provides wide bearing surface and snag-free aesthetics—ideal for robotics, electronics, enclosures, and mechanical assemblies. Quality & Supply: Each lot meets or exceeds Monster Bolts’ demanding quality standards, ensuring consistent performance across every carton. Keep your builds moving with fast U.S. shipping and reliable bulk supply. Monster Features: High Strength: Class 12.9 alloy steel for demanding torque and load applications. Sleek Button Head: Low profile with wide bearing surface for secure, clean installs. Hex Drive: 2.5 mm internal hex for precise fit and positive torque transfer. Thermal Black Oxide: Low-gloss finish with light oil—mild corrosion resistance and RoHS compliant. Standards: Button head geometry to DIN 9427 / ISO 7380. Monster Specifications Feature Details Diameter / Thread M4-0.70 (coarse, standard metric) Available Lengths Select length above (multiple sizes stocked) Head / Drive Button Head Socket — Hex 2.5 mm Material / Grade Black Alloy Steel, Class 12.9 Finish Thermal Black Oxide (light oil; RoHS compliant) System of Measurement Metric Standards DIN 9427 / ISO 7380 More Monster Bolts: • M2.5 Hex Keys• Matching M4 Nuts & Washers• All Bulk Metric Socket Screws Order Today and Experience the Monster Bolts Difference Buy with confidence—every Monster Bolts order is backed by responsive support and fast U.S. fulfillment. MTRs available on request for bulk cartons. Note: Bulk shipping times can vary slightly based on inventory location and order size. Most orders ship quickly; smaller bulk quantities may take a few extra days to process.