1/4-20 x 3 Stainless Steel 316 Hex Head Cap Screw

Description

1/4-20 x 3 Stainless Steel (SS) 316 Hex Cap Screw is a premium, high-corrosion-resistance fastener with added molybdenum, offering superior protection over SS 18-8 in saltwater, chemical, and harsh industrial environments.

Hex cap screws have a flat bearing surface, a hexagonal head, and a partially or fully threaded shank. Their six-sided head allows for easy tightening with standard wrenches and sockets, and the SS 316 composition provides the highest level of corrosion resistance among standard stainless steel fasteners.

Stainless Steel (SS) 316

• Stainless Steel 316 hex cap screws offer superior corrosion resistance compared to SS 18-8, thanks to the addition of molybdenum which enhances protection against saltwater, chlorides, and harsh chemicals
• These are the preferred choice for marine, coastal, and aggressive industrial environments where SS 18-8 may be insufficient

1/4-20 x 3 SS 316 Hex Cap ScrewFeatures

• High torque capacity due to the six-sided head, allowing use with wrenches, ratchets, and impact drivers
• Versatile thread options available in partial or full thread configurations for different grip and holding requirements
• Premium corrosion resistance, with molybdenum content providing exceptional protection in saltwater, chemical, and high-humidity environments

Common Uses

• Marine construction, offshore equipment, and saltwater-exposed structures
• Chemical processing, pharmaceutical, and food-grade manufacturing equipment
• Coastal construction, water treatment facilities, and harsh outdoor industrial applications

Application

• Only insert into a pre-drilled and, when required, tapped hole
• Use a wrench, socket, or impact driver sized to the hex head
• Pair with an appropriate nut and washer for through-bolting applications; use with a tapped hole when threading directly into material

Tips

• Always use a washer under the head to distribute load and prevent surface damage
• Hex cap screws are measured from directly under the head to the tip of the threaded shank
• Use SS 316 nuts and washers to maintain consistent corrosion resistance throughout the assembly — avoid mixing with lower-grade metals in highly corrosive environments