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

Total Quantity	250 pieces
Material	Stainless Steel
Drive	Hex socket (Allen key)
Tip Type	Cup point
Sizes Included	M3, M4, M5, M6, M8 (multiple lengths each)
Storage	Compartmentalized plastic storage box

---

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

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

We are committed to quality, reliability, and customer satisfaction. Every product is carefully selected and tested to meet the highest standards.