M3-0.5 x 55 18-8 Stainless Steel Metric Socket Head Cap Screw is specified when the drawing calls for a metric socket head cap screw rather than an inch substitute. The cylindrical socket head gives wrench access through the internal hex while keeping the head shape familiar for counterbored metric designs. The chromium-nickel stainless family resists rust and staining better than uncoated plain or alloy steel in many plant environments.

Conveyor frames in wet plants can use stainless metric SHCS sizes for covers, rails, brackets, and service panels. For stainless-on-stainless threads, moderate installation speed and a suitable lubricant or anti-seize help reduce galling risk.

Cold Headers supports hard-to-find metric stainless socket screw lengths while keeping the diameter, pitch, and length exact. Review the metric thread, length, head diameter, head height, socket size, and key engagement before substituting another screw.

Technical Highlights

• Head Style: Cylindrical socket head, internal hex drive
• Material: 18-8 Stainless Steel
• Thread Size: M3-0.5 (coarse metric pitch)
• Length: 55 mm
• Head Diameter: 5.50 / 5.20 mm (max/min)
• Head Height: 3.00 / 2.86 mm (max/min)
• Hex Key Size: 2.5 mm
• Minimum Key Engagement: 1.3 mm
• Dimensional Standard: ISO 4762 / DIN 912

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