250PCS Stainless Steel Allen Head Socket Set Grub Screws Assortment — M3 M4 M5 M6 M8 Cup Point with Storage Box

250PCS Stainless Steel Allen Head Socket Set Grub Screws Assortment — M3 M4 M5 M6 M8 Cup Point with Storage Box

Comprehensive 250-piece stainless steel Allen hex socket cup point set screw (grub bolt) assortment covering M3 through M8 in multiple lengths. Supplied in a compartmentalized plastic storage box for easy organization. The ideal workshop kit for electronics assembly, robotics, 3D printer maintenance, and general shaft locking applications.

Kit Specifications

Why Choose This 250PCS Kit?

• 250 pieces across 5 sizes — M3–M8 in multiple lengths; covers all common shaft locking applications
• Stainless steel — corrosion-resistant for long-term workshop stock
• Cup point tip — bites into shaft for reliable holding force
• Storage box included — compartmentalized organization; easy to identify and access sizes
• Workshop essential — eliminates repeated single-size orders

Typical Applications

• 3D printer GT2 pulley and motor coupling locking (M3)
• NEMA 17/23 stepper motor shaft collar retention
• CNC machine tool holder and collet locking
• Robotics joint and actuator shaft locking
• Electronics enclosure and instrument adjustment locking
• General workshop shaft locking and set screw replacement

Compatible With

Standard metric tapped holes M3–M8. Allen key sizes: M3=1.5mm, M4=2mm, M5=2.5mm, M6=3mm, M8=4mm. Compatible with GT2 timing pulleys, shaft collars, motor couplings, and standard set screw applications.

Package Contents

• 250× stainless steel Allen hex socket cup point set screws (M3, M4, M5, M6, M8 in multiple lengths)
• 1× Compartmentalized plastic storage box