Bulk 1/4"-20 Phillips Flat Undercut Thread Cutting Screw Type 23 – Full Thread Zinc-Bake (1/2" & 5/8") Length:5000 Qty - 1/4-20 x 1/2" Coarse Thread (UNC) Fine Thread

Coarse Thread (UNC) Fine Thread (UNF) 1/4"-20 1/4"-28 5/16"-18 5/16"-24 3/8"-16 3/8"-24 7/16"-14 7/16"-20 1/2"-13 1/2"-20 9/16"-12 9/16"-18 5/8"-11 5/8"-18 3/4"-10 3/4"-16 7/8"-9 7/8"-14 1"-8 1"-12 1-1/8"-7 1-1/8"-12 1-1/4"-7 1-1/4"-12 1-1/2"-6 1-1/2"-12 Ideal Applications:

making nut installation smooth and efficient

Finish: Plain (unplated) — suitable where extra corrosion protection is not essential

but more is possible

Bulk 1/4"-20 Phillips Flat Undercut Thread Cutting Screw Type 23 – Full Thread Zinc-Bake (1/2" & 5/8") Length:5000 Qty - 1/4-20 x 1/2" Coarse Thread (UNC) Fine ThreadMonster Overview: Tackle tight clearance countersinks with 1 4 20 Phillips Flat Undercut Head Thread Cutting Screws, Type 23, Zinc Bake from Monster Bolts. The undercut flat head sits lower than a standard 82 flat, making room for thicker sheet metal or brittle plastics without punching through. A Type 23 triangular chip relief pocket at the tip clears swarf as it cutsreducing drive torque and leaving crisp internal threads in steel, aluminum, and