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. This bulk pack of 100 ensures you always have reliable hardware on hand for repairs, builds, and maintenance.

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

• Bulk pack of 100 for shop, fleet, or fabrication use

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

• Pack Quantity: 100

• 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.