5/16-18 x 5/16 18-8 Stainless Steel Low Head Socket Cap Screw provides a reduced-head socket-drive option for assemblies that need stainless construction and controlled head projection.

The low head geometry gives this 5/16-18 x 5/16 fastener a reduced profile for robotics and automation equipment, where compact socket-head geometry supports tight machine envelopes and serviceable internal-hex installation. It may also be specified for conveyor systems and packaging equipment, where lower head projection can reduce snag points while still providing socket-drive access for maintenance.

18-8 stainless steel is a general-purpose stainless choice for indoor equipment, many outdoor installations, and assemblies where a clean appearance is important.

For engineering departments and industrial buyers, Cold Headers helps identify low head socket screw sizes that fit specific clearance and assembly requirements.

Use the verified dimensions below to compare nominal body diameter, head diameter, head height, hex socket size, and key engagement against the available space in the assembly.

Technical Highlights

• Material: 18-8 Stainless Steel
• Thread Size: 5/16-18
• Length: 5/16 in.
• Nominal Body Diameter: 0.3125 in.
• Head Diameter: 0.431-0.437 in.
• Head Height: 0.152-0.156 in.
• Hex Socket Size: 0.1562 in.
• Minimum Key Engagement: 0.120 in.
• Drive Type: Internal Hex

Reference dimensions may vary slightly by manufacturer.

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