Value Collection ST1/4-20X1-1/4 Hex Bolt 1/4-20 Ss

Product Description

The VALUE COLLECTION ST1/4-20X1-1/4 is a self sealing hex bolt designed for applications that require a leak-resistant mechanical fastener. Built from 18-8 stainless steel and passivated for enhanced corrosion resistance, this bolt integrates a silicone O-ring under the head to form a reliable seal against moisture, fluids, and gases at the fastener point. The 1/4-20 UNC thread and 1-1/4 inch length under head make it a compact, versatile fastener. Plumbers, HVAC technicians, and mechanical contractors install this type of bolt where standard hex bolts would allow seepage around the fastener hole.

This self sealing hex bolt is suited for residential and light commercial mechanical systems where panel covers, access doors, enclosures, or fluid-carrying assemblies must be fastened without allowing moisture or media ingress at the bolt location. Typical applications include equipment enclosures, HVAC sheet metal assemblies, plumbing fixture mounting, and any mechanical joint where thread sealants alone are insufficient. The passivated 18-8 stainless steel construction makes it appropriate for both indoor and moderately corrosive outdoor environments. Sold in a pack of 5.

Key Features

• Silicone O-ring under head creates a leak-resistant seal at the fastener point
• 18-8 stainless steel construction provides corrosion resistance in wet and humid environments
• Passivated finish enhances surface oxidation resistance beyond standard stainless steel
• 1/4-20 UNC thread for broad compatibility with standard tapped holes and nuts
• 1-1/4 inch length under head suits medium-depth panel and enclosure fastening
• Pack of 5 units per order

Compatibility

Designed as a direct-fit replacement or upgrade for standard 1/4-20 UNC hex bolts in applications requiring an integrated sealing washer or O-ring, including equipment enclosures, access panels, and mechanical assemblies where the bolt hole requires sealing.

Installation Notes

Installation requires a standard hex wrench or socket sized for the bolt head. Ensure the mating surface is clean and flat so the silicone O-ring seats evenly and forms a consistent seal. Do not overtighten, as excessive torque can deform or extrude the O-ring and compromise the seal. Stainless steel fasteners are susceptible to galling — apply an appropriate anti-seize compound to the threads before installation to prevent thread seizure.