M12 x 90 Alloy Steel Metric Socket Head Shoulder Screw (Stripper Bolt) combines an internal hex socket head with a ground metric shoulder and a smaller M10-1.5 thread. The head retains the part, the shoulder bears and locates, and the thread secures the fastener in the tapped hole.

Robotics joints and end-effector pivots use the shoulder where rotation happens around a precise metric diameter. Check shoulder diameter, shoulder length, thread size, thread length, socket size, and head dimensions before substitution.

Cold Headers keeps metric shoulder screws separate from socket head cap screws so the locating function stays clear. ISO 7379 catalog nominals often list 13 mm here; this hard-to-find 12 mm shoulder is a stocked variant used in North American metric tooling. Non-catalog shoulder diameters or shoulder lengths can be quoted when the standard range does not match the tool drawing. Alloy Steel Metric Socket Head Cap Screws are the clamping fastener choice when a metric print does not need a shoulder.

Technical Highlights

• Style: Socket head shoulder screw (stripper bolt), internal hex drive
• Material: Alloy Steel
• Shoulder Diameter: 12 mm nominal (11.984 / 11.941 mm)
• Shoulder Length: 90 mm
• Thread: M10-1.5 (one size below the shoulder, per ISO 7379)
• Thread Length: 16.40 mm
• Head Diameter: 18.00 / 17.73 mm (max/min)
• Head Height: 8.00 / 7.78 mm (max/min)
• Hex Key Size: 6 mm
• Minimum Key Engagement: 4.9 mm
• Dimensional Standard: ISO 7379

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.