Stainless Steel Hex Socket Shoulder Bolt Set 5 Pack with 5mm Shoulder Diameter 20mm Shoulder Length M4 Thread 304 Stainless Fully Threaded Heavy Duty Pro Grade Build to Last for DIY Projects and Industrial Use

5-Pack 304 Stainless Shoulder Bolts, 5mm x 20mm, M4 Thread
✔️ 5pcs; 304 stainless; hex socket drive; fully threaded; 9.5mm (0.37") thread length

This heavy-duty shoulder bolt set is designed for DIY projects and industrial use, delivering solid corrosion resistance and long life. Each bolt features a 5mm shoulder diameter and 20mm shoulder length, with M4 threads and a socket cap head for secure drive. These bolts help prevent rotation and provide reliable alignment in textile, hydraulic, injection molding, and machinery assemblies.

✅ Pack content: 5 bolts per set (5-pack)
✅ Material: 304 stainless steel for corrosion resistance and durability
✅ Drive type: hex socket head; inner hex width 3mm (0.12")
✅ Shoulder: diameter 5mm (0.2"), length 20mm (0.8")
✅ Thread: M4, length 9.5mm (0.37"), fully threaded
✅ Head style: socket cap; head size 3.5 x 9mm (0.14" x 0.35")
✅ Material grade: A2-70; ISO7379; weight ~27g
✅ Applications: widely used in textile, hydraulic, injection molding, machinery

💡 What is a shoulder bolt used for in precise machinery and assembly applications?

Shoulder bolts act as precise locating pins and rotation controls in many builds.

• Shoulder bolts provide accurate alignment and a smooth bearing surface for bushings and spacers.
• They give a consistent shoulder for bearings and bushings to ride on, reducing wobble.
• Made from 304 stainless steel, they resist corrosion in harsh industrial environments.
• With M4 threads and a 5mm shoulder, they fit compact, sturdy mechanical setups.