M6-1.0 x 40 18-8 Stainless Steel Metric Button Head Socket Cap Screw combines 18-8 stainless material with metric button-head geometry for compact exterior fastening. The domed head reduces projection while the internal hex drive keeps installation access centered from the top.

Commercial equipment panels and machine skins use button heads when the installed screw remains part of the visible surface. Cold Headers helps distributors, maintenance teams, and OEM buyers source exact metric socket screw sizes. For non-standard metric lengths, Cold Headers can quote cut-to-length service after the base requirement is confirmed. If the print requires a full-height head instead, compare 18-8 Metric Socket Head Cap Screws in the same material family. A 316 metric button head version is a non-catalog request Cold Headers can quote when that stainless family is required.

Technical Highlights

• Head Style: Button (low-profile dome), internal hex drive
• Material: 18-8 Stainless Steel
• Thread Size: M6-1.0 (coarse metric pitch)
• Length: 40 mm
• Head Diameter: 10.50 / 10.07 mm max/min
• Head Height: 3.30 / 3.00 mm max/min
• Hex Key Size: 4.0 mm
• Dimensional Standard: ISO 7380-1

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