Monster Overview: When your project demands both strength and a clean, flush finish, M20 Flat Head Socket Cap Screws from Monster Bolts deliver unmatched performance. Made from Class 12.9 alloy steel with a durable thermal black oxide coating, these countersunk fasteners combine high tensile strength, precision machining, and a sleek, low-glare appearance. The M12 hex drive ensures secure engagement for reliable torque control and repeatable assembly results in heavy machinery and structural applications. Quality & Supply: Every production lot meets Monster Bolts’ internal benchmarks for hardness, dimensional precision, and surface consistency. Available in both full-thread and partial-thread (PT) options to suit your application requirements. Monster Features: Flush 90° Countersunk Head: Provides a smooth, even finish ideal for precision-engineered or clearance-limited assemblies. Superior Strength: Class 12.9 alloy steel ensures maximum tensile and preload capacity. Precision Drive: M12 hex socket delivers consistent torque and reduced cam-out risk. Thermal Black Oxide: Lightly oiled, RoHS-compliant finish offers mild corrosion resistance and a uniform black tone. Standards: Fully meets DIN 7991 / ISO 10642 specifications for dimensional accuracy and fit. Monster Specifications Feature Details Diameter / Thread M20-2.50 (coarse, standard metric) Drive Size Hex M12 Head Type Flat Head Socket Cap Screw – 90° countersunk profile Material / Grade Black Alloy Steel, Class 12.9 Finish Thermal Black Oxide (light oil; RoHS compliant) System of Measurement Metric Standards DIN 7991 / ISO 10642 Length Measurement: Flat head screws are measured over their entire length, including the head.Note: “PT” designates Partial Thread versions. More Monster Bolts: • M12 Hex Keys• Matching M20 Nuts & Washers• All Bulk Metric Flat Head Socket Screws Order Today and Experience the Monster Bolts Difference Buy with confidence — every Monster Bolts bulk order is backed by rigorous inspection, responsive support, and fast U.S. fulfillment.MTRs available upon request for unopened bulk cartons. Note: Bulk shipping times may vary slightly depending on order size and warehouse location. Most orders ship within a few business days.
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