M4-0.7 x 20 18-8 Stainless Steel Metric Flat Head Socket Cap Screw gives raised-head interference a cleaner answer: a metric flat head with internal hex drive access and 18-8 stainless construction. This geometry reduces surface projection so guides, tracks, and mating plates can pass over the fastened area more cleanly.

Food-equipment surfaces and wipedown panels often favor countersunk stainless screws because the finished face is easier to clean. 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: M4-0.7 (coarse metric pitch)
• Length: 20 mm (overall, including head)
• Head Diameter: 8.00 / 7.78 mm (max/min)
• Head Height: 2.48 mm (max)
• Hex Key Size: 2.5 mm
• Minimum Key Engagement: 1.49 mm
• Dimensional Standard: ISO 10642

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