Rectangular nuts are useful in many woodworking applications. Their large surface area reduces embedding into softwoods and are self-locking when the flat side is oriented toward material. Commonly used in clamping applications and even more commonly in T-Track.
13-M010 1/4-20 Nut fits into most 1/4” Aluminum T-Track's including both Woodpecker and Incra T-Track. It measures 7/16” wide, 1” long and approximately 1/8” thick.
13-M015 ¼-20 Nut is a larger version of the 13-M010 and will only fit the T-Slot in the front of the Incra Twin Linear fence. It will not fit most ¼” aluminum T-Tracks.
measures 1/2” wide, 1 1/8” long and approximately 1/8” thick.
13-M020 5/16-18 will fit into the front slot of the Incra Table Saw Rails. This can be quite useful for attaching in-feed and out-feed support tables.