5/16-18 X 1 Inch Unslotted Indented Hex Washer Head Machine Screw Full Thread Stainless Steel 18-8 Pack Qty 625 For Heavy Duty Fastening In Automotive Machinery Metal Fabrication And General Projects

Heavy-Duty 5/16-18 x 1 in Stainless Screw Pack 625
✔️ 0.3125 in dia (7.94 mm), 1 in long (25.4 mm), 18-8 SS

These unslotted indented hex washer head machine screws are full-thread stainless fasteners designed for through-hole joining in automotive, machinery, and metal fabrication projects. They deliver strong performance in environments where corrosion resistance and reliable fastening matter, such as engines, housings, and general assemblies.

✅ Size: 5/16-18 UNC, dia 0.3125 in (7.94 mm), length 1 in (25.4 mm)
✅ Head: Indented hex washer head for flush seating and load distribution
✅ Material: 18-8 stainless steel for good atmospheric corrosion resistance
✅ Finish: natural stainless finish for reliable use in varied conditions
✅ Pack: 625 screws per pack for bulk projects
✅ Application: through-hole assemblies in automotive, machinery, metal fabrication, general projects

💡 What is a stainless steel machine screw used for in heavy equipment assemblies?

Handy fastener for through-hole joining and reliable thread formation. - Through-hole fastening in automotive and machinery where a mating thread is formed - Provides strong pull and torque transfer in high-stress assemblies - 18-8 stainless offers corrosion resistance for outdoor or food-related environments - Compatible with tapped holes or nuts in metal fabrication and general projects