M3-0.5 x 6 18-8 Stainless Steel Metric Socket Head Cap Screw provides a cylindrical socket head and internal hex drive for metric assemblies exposed to ordinary moisture. The cylindrical socket head gives wrench access through the internal hex while keeping the head shape familiar for counterbored metric designs. Metric drawings from European suppliers may call this broad austenitic stainless family A2; do not treat that as a strength-grade claim.

Replacement repairs on humid plant equipment can use 18-8 stainless to reduce repeated rust-stain service issues. For stainless-on-stainless threads, moderate installation speed and a suitable lubricant or anti-seize help reduce galling risk.

Cold Headers has supplied specialty socket fasteners since 1962 and supports exact metric size identification. 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: 6 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.