Kalote 265PCS Rivnut Kit, Zinc Plated Carbon Steel Rivet Nut, M3 M4 M5 M6 M8 M10 M12 Rivnuts Assortment Set, Flat Head Threaded Insert Nut for Metal Sheets, Electrical Appliances and Industrial

PREMIUM BLACK ZINC FINISH: Unlike standard yellow zinc, our black zinc plating offers superior resistance to oxidation and salt spray, making it ideal for the UK’s damp climate. The sleek black finish is perfect for automotive, motorcycle, and bicycle modifications where a discreet, professional look is required. ISO PRECISION THREADS: Each nutsert is manufactured with high-precision ISO metric threads to ensure smooth engagement. We have solved the common "stuck bolt" issue by implementing a strict deburring process, ensuring you won't experience stripping or jamming during high-torque installations. HEAVY-DUTY CARBON STEEL: Forged from high-strength carbon steel, these rivet nuts provide exceptional load-bearing capacity. The specialized knurled body design increases torque-to-turn resistance, ensuring the insert stays locked firmly in place without spinning in the hole. COMPREHENSIVE 7-SIZE ASSORTMENT: This 265pcs master kit includes all essential metric sizes: M3 (85), M4 (50), M5 (50), M6 (35), M8 (30), M10 (10), and M12 (5). One kit covers everything from precision electronics and furniture to heavy-duty vehicle chassis and marine projects. REINFORCED ORGANISER CASE: Comes in a durable, compartmentalised storage box with clear size labels. The reinforced latches prevent the case from opening during transport, solving the "mixed-up parts" frustration and keeping your workshop tidy and efficient.