M1.6 M2 M2.5 M3 M4 M5 Black Socket Countersunk Allen Head Bolts Grade 12.9 carbon steel Socket Screws - M1.6x0.35mmm / 4mm / Black

1.Grade 12.9 Carbon Steel Superiority
"Forged from ultra-high-strength Grade 12.9 carbon steel, these countersunk Allen bolts withstand extreme torque, heavy loads, and repetitive stress, making them indispensable for automotive, aerospace, and industrial machinery applications."

2.Sleek Black Oxide Corrosion Defense
"Enhanced with a durable black oxide coating, these screws resist rust, abrasion, and harsh environmental exposure while maintaining a sleek, low-profile finish for professional and aesthetic-critical installations."

3.Precision Countersunk Head Design
"Engineered with a flush-mounting countersunk head, these Allen bolts sit perfectly flat on surfaces, eliminating protrusions for streamlined assemblies in tight spaces or high-clearance applications."

4.Versatile Sizing (M1.6 to M5)
"Covering sizes from ultra-precise M1.6 to robust M5, this range adapts seamlessly to delicate electronics, CNC machinery, automotive panels, and structural frameworks requiring precision fastening."

5.DIN-Compliant Socket Drive Reliability
"Machined to exacting socket screw standards, the hex socket ensures secure Allen key engagement, minimizing stripping and delivering consistent torque control for error-free installations every time."