M5-0.8 x 10 18-8 Stainless Steel Metric Flat Head Socket Cap Screw is a flush-mount metric socket fastener for panels, guides, covers, and machine details built around metric prints. Use the verified diameter, socket size, head diameter, and key engagement values when checking countersink and tool fit.

Instrumentation faceplates and control housings rely on flush screw heads to avoid raised hardware around labels or operators. Stainless-on-stainless threads can gall when driven fast and dry, so moderate installation speed with lubricant or anti-seize is common practice. Confirm overall length, head diameter, head height, socket size, and key engagement before substitution.

Cold Headers keeps this 18-8 metric flat head family separated from inch-series and alloy rows so purchasers can keep the drawing callout intact. 18-8 Metric Button Head Socket Cap Screws reduce projection without a countersink. 316 stainless metric flat heads are non-catalog quote requests for environments requiring that material.

Technical Highlights

• Head Style: Flat (countersunk), internal hex drive
• Countersink Angle: 90°
• Material: 18-8 Stainless Steel
• Thread Size: M5-0.8 (coarse metric pitch)
• Length: 10 mm (overall, including head)
• Head Diameter: 10.00 / 9.78 mm (max/min)
• Head Height: 3.10 mm (max)
• Hex Key Size: 3.0 mm
• Minimum Key Engagement: 1.86 mm
• Dimensional Standard: ISO 10642

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