1500PCS Screw Assortment Kit, M2-M6 12.9 Alloy Steel Hex Socket Cap Bolts

GRADE 12.9 HIGH TENSILE STRENGTH: Forged from quenched and tempered alloy carbon steel, these 12.9-grade metric bolts offer ultimate tensile strength to withstand heavy loads and severe stress without snapping. | COMPLETE SHOCK-ABSORBING SYSTEM: Includes 1500pcs sorted hardware: 315 screws, 375 nuts, 375 flat washers, and 375 spring lock washers. The added spring washers prevent screws from loosening under high vibration. | PRECISION BEVEL-EDGED SOCKET HEAD: Standardized socket head cap design with deep, sharp internal hex sockets. Ensures a perfect, non-slip fit with the 5 included Allen keys, minimizing the risk of head stripping. | EASY DISPENSING & ACCURATE LABELING: Packed inside a rugged transparent organizer with immovable compartment dividers. A dedicated internal partition schematic prevents small M2/M3 washers from mixing during transport. | HIGH-STRESS COMPATIBILITY & BOUNDARY: Ideal for precision industrial machinery, robotics, RC motor mounts, and 3D printer frames. Note: Features black oxide finish; recommended for indoor, dry, or oiled environments only.