M5-0.8 x 5 18-8 Stainless Steel Metric Socket Head Cap Screw supports maintenance work where corroded plain steel hardware is being replaced with 18-8 stainless steel. Head height in this socket head pattern corresponds to the nominal metric thread diameter, a useful check when reviewing counterbore clearance. For stainless-on-stainless assembly, run threads at moderate speed and use lubricant or anti-seize when galling is a concern.

Protected marine-adjacent deck equipment may use 18-8 only when the exposure and specification allow it.

Special left-hand thread requests can be discussed when a metric stainless socket screw must match unusual equipment. Cold Headers supports distributors, OEM buyers, and MRO teams that need uncommon metric socket screw lengths. 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: M5-0.8 (coarse metric pitch)
• Length: 5 mm
• Head Diameter: 8.50 / 8.14 mm (max/min)
• Head Height: 5.00 / 4.82 mm (max/min)
• Hex Key Size: 4.0 mm
• Minimum Key Engagement: 2.7 mm
• Dimensional Standard: ISO 4762 / DIN 912

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