S-90269A923 M20 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction with a protective black oxide finish.
• Exceptional mechanical strength for demanding applications, offering a tensile strength of 70,000 psi and a minimum shear strength of 35,000 psi.
• Precise component alignment and rotation enabled by the 160mm shoulder with controlled diameter and length tolerances.
• Secure and reliable fastening with a Class 5g6g thread fit and coarse M20x2.5 thread for robust engagement and vibration resistance.
• Easy installation and removal facilitated by the 12mm hex socket drive and knurled head for superior grip, even with gloves.
• Guaranteed dimensional consistency and interchangeability, manufactured to meet the stringent ISO 7379 standard.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This M20x2.5 shoulder screw is engineered to solve critical challenges in heavy-duty industrial applications. The core of its value lies in the 316 stainless steel material, which provides outstanding resistance to chemicals and corrosion, significantly extending service life in demanding conditions. The long, 160mm shoulder acts as a precise pivot or axle, ensuring accurate alignment of moving parts in machinery, which reduces wear and prevents misalignment failures. The black oxide finish not only enhances corrosion protection but also reduces galling. Combined with the coarse metric thread and high tensile strength, this fastener delivers reliable, vibration-resistant performance in assemblies such as conveyor systems, robotic arms, and heavy machinery where precision shoulder screws are critical for operational integrity.

Specification Summary & Compliance

This metric shoulder screw features an M20x2.5 coarse thread with a Class 5g6g thread fit. The shoulder diameter is 24 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 160 mm with a tolerance of 0 to 0.25 mm. It is manufactured to conform to ISO 7379 and is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant.