M8-1.25 x 90 18-8 Stainless Steel Metric Socket Head Cap Screw is specified when the drawing calls for a metric socket head cap screw rather than an inch substitute. The verified head and socket dimensions help confirm counterbore fit before substituting another metric screw. For chloride, salt-spray, or marine-adjacent service beyond 18-8's comfort zone, a 316 stainless metric request can be quoted separately.

Pharmaceutical and cleanroom equipment may specify stainless metric fasteners where a clean appearance is part of the requirement.

Cold Headers supports distributors, OEM buyers, and MRO teams that need uncommon metric socket screw lengths. Review the metric thread, length, head diameter, head height, socket size, and key engagement before substituting another screw. Cold Headers can help confirm the exact metric length and stainless family when replacement records are incomplete.

Technical Highlights

• Head Style: Cylindrical socket head, internal hex drive
• Material: 18-8 Stainless Steel
• Thread Size: M8-1.25 (coarse metric pitch)
• Length: 90 mm
• Head Diameter: 13.00 / 12.57 mm (max/min)
• Head Height: 8.00 / 7.78 mm (max/min)
• Hex Key Size: 6.0 mm
• Minimum Key Engagement: 4.3 mm
• Dimensional Standard: ISO 4762 / DIN 912

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