S-91273A808 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and extending service life.
• Enhanced wear resistance and reduced light glare with the black oxide finish, providing a durable, low-profile surface.
• High-strength performance with 70,000 PSI tensile strength and 35,000 PSI minimum shear strength, ensuring reliable fastening under load.
• Precise component alignment and smooth rotation enabled by the 20mm shoulder length with tight tolerances, acting as a reliable shaft or pivot.
• Secure, non-slip installation thanks to the knurled head and 3mm hex socket drive, allowing for high-torque application without cam-out.
• Accurate and consistent thread engagement with Class 5g6g metric coarse threads (M6x1mm), facilitating easy assembly and interchangeability.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring suitability for global industrial supply chains.

Professional Applications & Engineering Value

This M6x1mm shoulder screw is engineered to solve critical alignment and pivot-point challenges in precision assemblies. The 18-8 stainless steel core provides excellent resistance to rust and corrosion, making it suitable for demanding environments like machinery, automotive, and electronics. The black oxide finish not only adds an extra layer of protection against wear but also minimizes light reflection in sensitive optical equipment. The integral 20mm shoulder with its precise diameter ensures components like gears, bearings, and linkages are held at exact distances, eliminating misalignment and reducing wear on moving parts. Combined with the hex socket drive and knurled head, it offers secure, high-torque installation, which is essential for maintaining assembly integrity in high-vibration applications. This design directly addresses the need for durable, reliable, and precisely manufactured shoulder screws in professional settings.

Specification Summary & Compliance

This precision shoulder screw features an M6x1mm coarse thread with a Class 5g6g tolerance fit, ensuring high dimensional accuracy for consistent performance. The shoulder diameter is 6mm with a tight tolerance of -0.04 to -0.01 mm, and the shoulder length is 20mm with a tolerance of 0 to 0.25 mm, guaranteeing precise assembly. Manufactured from 18-8 stainless steel with a black oxide finish, it meets key industry standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated industrial and international markets.