61000-M8x1 is genuine German Walter original standard insert clamping screw, professionally developed as matching replacement fastener for Walter full-range turning, boring, grooving and indexable milling tool holders. Equipped with precision M8×1 fine metric thread and 12.9 ultra-high tensile alloy steel substrate, the black anti-rust oxidized surface adapts to long-term workshop coolant working environment. The fine pitch thread enables precise and uniform clamping force distribution, firmly locks carbide inserts without displacement during high-feed heavy cutting and severe interrupted machining. Widely used as spare replacement parts in CNC lathe, vertical machining center and mold machining workshops for daily tool maintenance and mass production line tool servicing.

• 12.9 grade ultra-high tensile alloy steel raw material, integral quenching and tempering heat treatment, outstanding tensile strength, torsion resistance and fatigue resistance, not easy to break under standard tightening torque
• Precision M8×1 fine pitch thread design, tighter thread fit compared with coarse thread M8×1.25, finer clamping pressure adjustment, effectively avoids insert looseness and vibration marks on workpiece surface
• Uniform black oxidation anti-corrosion surface treatment, good resistance to cutting fluid corrosion, prevents rust and thread seizure after long-term storage or continuous workshop use
• Standard internal hex drive head, perfectly matched with Walter dedicated torque wrench, supports standardized torque tightening to eliminate over-torque screw fracture and under-torque insert shifting risks
• Strict German Walter factory thread tolerance control, high consistency of thread pitch and tooth profile, good interchangeability for all Walter tool holders with M8×1 screw holes
• Optimized screw head pressure surface design, uniform stress on insert positioning hole, reduces local stress concentration and extends service life of both screw and carbide insert
• Universal multi-scene compatibility, suitable for Walter external turning tools, internal boring bars, grooving cutters and indexable face/shoulder milling cutter bodies
• Standard batch packaging for workshop inventory management, convenient centralized procurement as daily maintenance spare parts, reduces tool downtime caused by damaged original screws