1/2″ 13 UNC Serrated Flange Lock Nut, Coated


Secure your fasteners with our coated 1/2″ 13 UNC Serrated Flange Lock Nut. Built for durability and stability. Get yours now!

Available on backorder


SKU: HW-NUT-PW-SBNUT Categories: , , , Tags: , ,


1/2″ 13 UNC Serrated Flange Lock Nut, Coated

Flange nuts or hex nuts ensure that the nut remains secure, even if the fastening surface is not uniform.

Their circular bottom flange is larger than the top hex part, which keeps the bolt from loosening over time.

Pergola World serrated flange nuts provide an excellent locking mechanism — they are perfectly angled so the nut doesn’t budge once fastened. The serrations also ensure that any movements or vibrations won’t compromise its holding power.

These flange nuts are perfect for irregular-shaped or oversized holes, as they cover all flaws. Sturdy, corrosion-resistant, and durable – they will provide the strength you need for years to come.



UNC13 Coarse Thread ½ inch
Height 7/16 inch
Overall Diameter 1 inch
Inside Diameter ½ inch
Hex Drive ¾ inch


Material Medium Carbon Steel
Made in Made in the USA
Coating Pergola World Multi-Stage Electrolytically Applied Black Military Spec — ACQ compatible
Application Universal application



1/2 13 UNC Serrated Flange Lock Nut, Coated- Drawings 1/2 inch Coated Flange Nut - Coating Specs

Additional information

Weight 0.04 lbs
Dimensions 0.5 × 1 × 1 in

Pergola World



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