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Strong-Point CF428 – Phillips Flat Head, Hi-Low, Notched Threads, Diamond Point, Blue Ceramic Coating, 1/4 x 1-3/4, Case Quantity: 2000

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Part Number: CF428
Application: Attaches wood or metal to concrete, brick, cement block or masonry.


• Meets ASTM A 510 for carbon steel manufacturing
• Product meets ASTM B-117 for salt spray corrosion testing


• Ceramic coating exceeds 500/hr. salt spray resistance
• Designed to work with ACQ treated lumber
• Notched threads for cutting into concrete, brick and cement block
• Diamond Point design for cutting and clearing debris during installation


Pre-drill hole a minimum of 1/4” deeper than concrete screw to be embedded with a carbide masonry drill bit. Use a standard screw gun set at a maximum of 2500 RPM drive speed recommended. Use a #3 Phillips drive bit. Fastener is properly installed when head sits flush with the work surface. Do not over torque as it can cause the head to snap or stripping of the recess. Installed fasteners must be embedded into concrete, brick, cement block or masonry a minimum of 1”.

Product Submittal: CF420_CF464


We offer free shipping for all orders across the U.S. mainland. JFasteners fulfill most orders within 1 business day via FedEx and UPS depending on the size and weight of the order.


At JT Thomas we have a 100% Customer Satisfaction Guarantee. If you are not completely satisfied with your purchase, simply return it for a replacement or refund. We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unused, and in its original packaging. You’ll also need the order number. To start a return, you can contact us at If your return is accepted, ship your items to the address provided. Items sent back to us without first requesting a return will not be accepted.

Customer Reviews

Victor Ortega
July 15, 2022
Great service
Great service. Really fast shipping Thanks again.
Townhomes HOA
June 27, 2022
Impressive service, pricing at JT Thomas
Great experience with JT Thomas - really amazing service and got a good price. Will be using them again for sure.
Stanley Chiu
June 26, 2022
Wonderful service and items ordered are…
Wonderful service and items ordered are high quality as expected. Will be doing further business with JT Thomas Fasteners again!
Krzysztof Smagowicz
June 12, 2022
Bought multiple products from…
Bought multiple products from jfastener. The shipping came through quickly and received screws. Will use again
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Strong-Point CF428 – Phillips Flat Head, Hi-Low, Notched Threads, Diamond Point, Blue Ceramic Coating, 1/4 x 1-3/4, Case Quantity: 2000
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