M8-1.25 x 30 Cup Point Alloy Steel Metric Socket Set Screw is selected for holding gears, sprockets, and couplings at a set position on a shaft.

OEM metric assemblies use cup point socket set screws where repeatable holding contact matters more than external wrench access. The metric standard defines geometry for the set screw form; do not substitute cap screw assumptions for this headless locking application. Review the metric diameter, length, cup diameter, and hex key together before substitution.

Cold Headers supports imported equipment rebuilds where the replacement screw must match the original metric callout.

Technical Highlights

• Point: Cup (recessed rim)
• Material: Alloy Steel
• Thread Size: M8-1.25 (coarse metric pitch)
• Length: 30 mm
• Cup Diameter (dz): 5.00 / 4.70 mm (max/min)
• Hex Key Size: 4 mm
• Length Tolerance: ±0.42 mm
• Dimensional Standard: ISO 4029 / DIN 916

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