M5-0.8 x 40 18-8 Stainless Steel Metric Socket Head Cap Screw is an 18-8 stainless steel metric socket head cap screw for equipment built around metric drawings. The socket head form is common in machinery where strong tool engagement and compact radial clearance are needed. This material is often selected for washdown, humidity, and outdoor equipment where 18-8 is appropriate for the exposure.
Outdoor production equipment and service panels may specify 18-8 metric fasteners for general weathering conditions. On many metric drawings, A2 stainless identifies the same broad chromium-nickel stainless family commonly called 18-8 in North America. For metric prints where clamp strength matters more than stainless corrosion performance, compare Alloy Steel Metric Socket Head Cap Screws.
For metric maintenance work, Cold Headers can quote the specified stainless socket head screw without forcing inch conversion. Review the metric thread, length, head diameter, head height, socket size, and key engagement before substituting another screw.
Technical Highlights
- Head Style: Cylindrical socket head, internal hex drive
- Material: 18-8 Stainless Steel
- Thread Size: M5-0.8 (coarse metric pitch)
- Length: 40 mm
- Head Diameter: 8.50 / 8.14 mm (max/min)
- Head Height: 5.00 / 4.82 mm (max/min)
- Hex Key Size: 4.0 mm
- Minimum Key Engagement: 2.7 mm
- Dimensional Standard: ISO 4762 / DIN 912
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
