Hillman 1/4-in x 20 Zinc-plated Steel Wood Insert Nut (4-Count) in the Lock Nuts department at

Jack nuts are blind fasteners designed for assembly line use in thin, soft or brittle materials. When tightened, the body collapses to form legs which grip the inside of the mounting surface, leaving a permanent, reusable threaded insert.

The Hillman Group 59127 Long Jack Nut, 1/4-20-Inch, 15-Pack

Hillman 1/4 in.-20 x 5/16 in. x 3/4 in. Stainless Steel Round Base

Carriage bolts are designed to fasten a wooden face to either a wood or metal frame. Its flat head is designed to eliminate the need for a washer and provide a semi-flush finish to applications. The square underside of the head is self-locking to eliminate spinning and the need for a driving tool. The zinc plating is rust resistant and provides a beautiful, consistent finish, but, may not work for all exterior projects.

Hillman 1/4 in. x 1-3/4 in. L Zinc-Plated Steel Carriage Bolt 100 Pk

Hillman 1/4-in x 20 Zinc-plated Steel Wood Insert Nut (4-Count) in

Hex nuts are to be used with machine bolts to adhere facing materials to prevent tension and shear movement. Specifically in wood to wood, wood to metal, or metal to metal applications. Zinc grade 2 steel hex nuts are recommended for most general uses and are corrosion resistant. Be sure to pre-drill any holes and to use washers and bolts that are a similar grade and finish.

Hillman Hexagonal Nut, 1/4-20 - 100 count

Hillman 1/4-in x 20 Stainless Steel Hex Nut (5-Count) in the Hex

Insert nuts provide strong machine screw threading in soft woods or substrates. External protrusions bite into the wood, preventing the nut from either turning or pulling out. Simply drill a pilot hole, thread in the insert with a screwdriver or T-wrench, and use a machine screw or bolt to attach the other part. Join wood, chipboard and plywood with these brass fasteners which are especially useful in knockdown furniture.