M4-0.7 x 70 18-8 Stainless Steel Metric Flat Head Socket Cap Screw is the exact-size metric flat head socket cap screw used when the mating part already has a compatible countersink. Use the verified diameter, socket size, head diameter, and key engagement values when checking countersink and tool fit.

Clean equipment panels and stainless machine covers can use the 18-8 material when the environment fits general stainless service. Metric flat heads per ISO 10642 use a 90° countersink angle, while inch-series flat heads use 82°; the two styles do not seat properly in each other's countersinks. 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: 70 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.