Value Collection MSC-87925319 Standard Flat Washer 18-8 Ss

Product Description

The VALUE COLLECTION MSC-87925319 is a No. 4 screw standard flat washer manufactured from 18-8 stainless steel. It is designed to distribute load under a fastener head or nut, reducing surface damage and preventing pull-through in bolted assemblies. The washer measures 1/8 inch inside diameter, 5/16 inch outside diameter, and 0.032 inches thick. Conforming to ASME B18.22.1 1965, it meets a recognized inch-series fastener standard. Electricians, plumbers, HVAC technicians, and general contractors use flat washers like this in equipment mounting, panel assembly, pipe hangers, and structural fastening applications where corrosion resistance is a priority.

This washer is suited for indoor and outdoor applications where moisture, mild chemicals, or humid environments are present. The 18-8 stainless steel construction makes it appropriate for HVAC equipment mounting, plumbing fixture installation, electrical enclosure assembly, and similar light-duty to medium-duty fastening tasks. It is sized for a No. 4 screw, which is common in instrument panels, thin-gauge sheet metal, and small equipment housings across residential and light commercial work.

Key Features

• 18-8 stainless steel construction provides corrosion resistance in wet or humid environments
• Conforms to ASME B18.22.1 1965 inch-series flat washer standard
• 1/8 inch ID fits No. 4 screws for instrument panels, sheet metal, and small equipment housings
• 0.032 inch thickness distributes clamp load without adding significant stack height
• 5/16 inch OD provides adequate bearing surface for No. 4 fastener applications

Compatibility

Designed as an OEM-style or replacement flat washer for No. 4 inch-series screw applications conforming to ASME B18.22.1 1965.

Installation Notes

Flat washers are installed by general trades and maintenance technicians using standard hand tools. Always power down or de-energize equipment before replacing fasteners in electrical or HVAC panels. Do not mix stainless steel fasteners with dissimilar metals in environments prone to galvanic corrosion without appropriate isolation. Follow applicable NEC or equipment manufacturer guidelines when fastening inside electrical enclosures.