These 18-8 Stainless Steel Split Lock Washers for 5/16" screw size are engineered to prevent loosening caused by vibration, torque, and heavy-duty operation. Made from high-quality 18-8 stainless steel, they deliver excellent corrosion resistance and long-term durability, even in outdoor, marine, or chemical-exposed environments.

Split lock washers are commonly used in pressure washing equipment, softwash systems, fabrication, automotive work, and industrial machinery where fasteners must stay secure during repeated use. Key Features

• Constructed from corrosion-resistant 18-8 (304 grade) stainless steel

• Designed to prevent loosening from vibration or movement

• Compatible with 5/16" bolts, screws, and studs

• Ideal for outdoor, marine, industrial, and high-vibration applications

• Excellent chemical and rust resistance
  

Product Specs

• Material: 18-8 Stainless Steel (AISI 304)

• Screw Size Compatibility: 5/16"

• Inside Diameter (ID): 0.322"

• Outside Diameter (OD): 0.583"

• Washer Type: Split lock washer
  

• Standards: Meets ASME/ANSI specifications

• Applications: Pressure washer rigs, softwash skids, automotive, marine hardware, fabrication, machinery assembly, construction

Perfect For

• Locking fasteners on pumps, engines, frames, and brackets

• Trailer and rig mounting hardware

• Marine environments where corrosion resistance is essential

• Industrial equipment and machinery

• General fastening and maintenance applications

These stainless steel split lock washers provide lasting, vibration-resistant fastening security with superior corrosion protection.