Value Collection MS35338-140 Split Lock Washer 5/16 in 316 Ss

Product Description

The VALUE COLLECTION MS35338-140 is a split lock washer designed to resist fastener loosening caused by vibration and dynamic loads. Manufactured from 316 stainless steel, this washer delivers strong corrosion resistance, making it suitable for wet, marine, and chemically demanding environments. The washer fits a 5/16 inch screw with an inside diameter range of 0.314 to 0.322 inches and a maximum outside diameter of 0.583 inches. Thickness measures 0.078 inches nominal, with a maximum thickness of 0.088 inches. This part meets military specifications under the MS35338 fastener standard, confirming consistent dimensional and material compliance. Electricians, plumbers, HVAC technicians, and general maintenance professionals commonly use split lock washers across mechanical and structural assemblies.

This washer is used wherever a 5/16 inch fastener requires positive locking against vibration-induced loosening. Typical applications include mechanical equipment mounting, electrical panel and enclosure assembly, HVAC equipment installation, plumbing fixture attachment, and general industrial or marine hardware. The 316 stainless steel grade resists chloride corrosion, making it a practical choice for coastal installations, pool mechanical rooms, and outdoor equipment. Sold individually per package with a minimum order quantity of 100 pieces, this washer is suited for trade professionals stocking hardware for ongoing service and installation work.

Key Features

• 316 stainless steel construction for superior chloride and corrosion resistance
• Meets MS35338 military fastener specification for dimensional consistency
• Inside diameter range of 0.314 to 0.322 inches fits standard 5/16 inch screws
• Maximum outside diameter of 0.583 inches for proper load distribution
• Nominal thickness of 0.078 inches with maximum of 0.088 inches
• Suitable for marine, pool, outdoor, and chemically exposed environments

Compatibility

Designed for use with 5/16 inch screws and bolts conforming to inch-system fastener standards. Meets military specification MS35338 and is dimensionally compatible with assemblies requiring that standard.

Installation Notes

Split lock washers are installed between the fastener head or nut and the mating surface before final torque is applied. Power down or de-energize any electrical or mechanical equipment before working on fastened assemblies. Use appropriate hand tools or power drivers sized for the fastener; do not over-torque, as excessive force can flatten the washer and eliminate its locking function. When installing in corrosive or wet environments, pair with 316 stainless steel fasteners to avoid galvanic incompatibility.