I offer hex socket shoulder screw solutions designed for lasting performance in automation, machinery, and equipment assembly. Our hex socket shoulder screw provides a precise shoulder for accurate positioning and a secure threaded fastener with a low profile. We stock options in stainless steel, alloy steel, and plated finishes, covering imperial and metric sizes from M4 to M12 (or 1/8" to 1/2"), with shoulder lengths tailored to your clearances. Finishes include zinc plating, black oxide, and passivation to resist corrosion in tough environments. The combination gives you high tensile strength, wear resistance, and easy installation in guide rails, hinges, and alignment assemblies. If you're looking for Cheap choices without sacrificing reliability, check our Pricelist and factory-direct pricing. I handle quality control, fast quotes, and samples to suit your project timeline. Reach out with your specs and I’ll propose the best hex socket shoulder screw solution for you.
Hex socket shoulder screws, or hex shoulder bolts, pair precise axial alignment with a durable bearing surface. The cylindrical shoulder locates parts and guides movement, while the hex socket drive ensures secure tightening. They are available in stainless or alloy steel, with finishes such as zinc, black oxide, or passivation, and come in standard metric and unified threads aligned to DIN, ISO, and ANSI tolerances for global use. For global buyers, these fasteners stand out for consistency and customization. You can specify shoulder length and diameter, thread size, and finish to fit your design. Rigorous quality control, including dimensional checks and hardness testing, plus export-ready packaging and scalable production, ensures reliable supply and predictable lead times across international projects. Ideal for automotive, automation, robotics, and precision fixtures, hex socket shoulder screws support durable performance in challenging environments.
| Product Code | Material | Head Style | Shoulder Dia. (mm) | Shoulder Len. (mm) | Thread Size | Overall Length (mm) | Finish | Heat Treatment | Hardness (HRC) | Tolerance | Notes | Origin |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HS-01 | Alloy Steel | Socket Head | 8 | 16 | M6 × 1.0 | 40 | Black Oxide | Quenched & Tempered | 44-48 | +0 / -0.05 | Precision sliding fit for light machinery | Germany |
| HS-02 | AISI 316 Stainless | Socket Shoulder | 10 | 20 | M8 × 1.25 | 52 | Satin | Not required | 40-46 | +0 / -0.05 | Corrosion-resistant for outdoor equipment | Japan |
| HS-03 | Alloy Steel | Socket Shoulder | 12 | 25 | M10 × 1.5 | 70 | Black Oxide | Quenched & Tempered | 46-52 | +0.0 / -0.05 | Heavy-duty alignment fixtures | USA |
| HS-04 | Brass | Socket Shoulder | 9 | 18 | M6 × 1.0 | 45 | Nickel-plated | Annealed | 28-32 | +0 / -0.05 | Low-friction bushings in light equipment | India |
| HS-05 | AISI 304 Stainless | Socket Shoulder | 11 | 22 | M8 × 1.25 | 60 | Bright | Not required | 38-44 | +0 / -0.04 | Medical-grade components for sterilization | Sweden |
| HS-06 | Alloy Steel | Socket Shoulder | 6 | 12 | M4 × 0.7 | 35 | Blued | Quenched & Tempered | 38-42 | +0 / -0.05 | Small-scale assemblies | Taiwan |