CUSTOMIZE YOUR JIGS, FIXTURES, AND T-TRACK: Experienced woodworkers use jigs regularly to create accurate, repeatable cuts quickly; The DCT 20 Pack of T Slot Bolts provides you with premium quality tee bolts to be used to create a router fixture, cabinet hardware jig, drawer pull jig, or other woodworking jigs; These “T” shaped wood bolts can be used with T nuts, knobs, or T tracks to create a variety of projects | T SHAPE PROVIDES VERSATILITY: Each piece is precision machined for quality, strength, and accuracy; T shaped head features a 7/16 x 5/8 inch (11 x 16mm) surface and a 3/32 inch (2mm) thickness and fits inside T-slot track or wooden groove; These furniture bolts and barrel nuts are ideal when building furniture, assembling sheds, decks, and cabinetry, or installing speakers or caster wheels | BUILT TO LAST: Constructed of grade 2 steel for strength, durability, and longevity; Zinc-plated for resistance to rust and corrosion; Unlike standard bolts and screws, these threaded wood inserts T bolts will not strip easily or over tighten | PERFECT SIZE FOR YOUR NEEDS: These T slot bolt wood fasteners have a length of 1-3/4 inch (4.4 cm) and a thread per inch of 20; The diameter of the bolt stem is 1/4 inch (.6 cm) | EASY TO USE: Measure and cut your bolt channel groove or use a pre-cut T-track that meets the size of your T bolt head; Once the track has been established, you can easily slide the T bolt into place and use a knob or T nut to tighten and hold the bolt in place (track, knobs, and tee nuts not included)