S-5 1/4" Self Piercing Screw w/ Capped Hex Head & Washer

The S-5! 1/4″ Self-Piercing Screw with Capped Hex Head & Washer is a stainless steel fastener designed for use with S-5! brackets and exposed-fastened applications. It features a capped hex head to protect the driver and a stainless steel sealing washer for weatherproofing. With a 1-inch (25 mm) length, 5/16-inch (8 mm) washer head, and 1/4-inch (6.3 mm) diameter, it pierces through metal panels and secures into steel decking or structural framing.

Key Features:

• 1/4″ (6.3 mm) diameter self-piercing screw
• 1″ (25 mm) long shaft for metal-to-metal fastening
• Capped hex head with 5/16″ (8 mm) head size
• Stainless steel sealing washer included for weather sealing
• Packaged 250 screws per box; lifetime product warranty through S-5!

• Diameter: 1/4″ (6.3 mm)
• Length: 1″ (25 mm)
• Head size: 5/16″ (8 mm) capped hex head
• Washer: Stainless steel sealing washer under head
• Material: Stainless steel (head, body, washer)
• Package quantity: 250 screws per box
• Includes: 250 self-piercing screws, each with capped hex head and sealing washer

• Align S-5! bracket over the metal panel and mark the fastening point.
• Position screw through bracket hole and ensure sealing washer makes contact with bracket base.
• Drive screw using hex driver or screw gun until washer seals firmly against bracket.
• Do not overtighten; ensure head is flush and washer compressed for seal without deforming material.
• Check that screw penetrates fully into steel deck or purlin for secure fastening.
• Inspect installed screws over time for seal integrity, corrosion, or loosening.

Q: What is the diameter and length of this screw?
A: It is 1/4″ diameter and 1″ long (25 mm).

Q: What type of head does it use and what size?
A: Capped hex head, approximately 5/16″ (8 mm) across the flats.

Q: Is the washer included, and what material is it?
A: Yes. It includes a stainless steel sealing washer under the head.

Q: How many screws come in a box?
A: 250 screws per bag or box.