Bulk #4-40 Phillips Flat Undercut Thread Cutting Screw Type 23 – Full Thread 18-8 Stainless Sheet metal screws These high-strength fasteners are manufactured

These high-strength fasteners are manufactured from Class 12

Bright zinc plating provides durable corrosion protection while meeting RoHS requirements—ideal for HVAC installs

✔️ Marine-grade A4 (316) Stainless Steel for unmatched corrosion resistance

Fast shipping from the USA—Monster Bolts has you covered

Fine-thread 5/16-24 hex nuts available under the USA Fasteners collection

Bulk #4-40 Phillips Flat Undercut Thread Cutting Screw Type 23 – Full Thread 18-8 Stainless Sheet metal screws These high-strength fasteners are manufacturedMonster Overview: Perfect low profile, rust proof assemblies with #4 40 Phillips Flat Undercut Head Thread Cutting Screws, Type 23, 18 8 Stainless from Monster Bolts. The undercut 82 head keeps more threads engaged in thin sheet, while the Type 23 triangular chip relief pocket ejects swarf as it cutslowering drive torque and leaving clean internal threads in stainless panels, aluminum, and plastics. Precision machined from 18 8 (A2) stainless, these