M10-1.5 x 40 18-8 Stainless Steel Metric Flat Head Socket Cap Screw fits imported or internationally designed equipment that specifies metric countersunk socket hardware. Unlike a cylindrical socket head, the countersunk head spreads into the prepared recess instead of standing above the surface.

Moving-part clearance zones use countersunk screws to keep nearby slides, linkages, or covers from contacting the fastener head. 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 has supported specialty socket fastener sourcing since 1962, including exact metric sizes for maintenance and production work. Compare 18-8 Metric Socket Head Cap Screws when a full cylindrical head is preferred.

Technical Highlights

• Head Style: Flat (countersunk), internal hex drive
• Countersink Angle: 90°
• Material: 18-8 Stainless Steel
• Thread Size: M10-1.5 (coarse metric pitch)
• Length: 40 mm (overall, including head)
• Head Diameter: 20.00 / 19.67 mm (max/min)
• Head Height: 6.20 mm (max)
• Hex Key Size: 6.0 mm
• Minimum Key Engagement: 3.60 mm
• Dimensional Standard: ISO 10642

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