mankk M-172-408PCS 408PCS Machine Shop Hardware

408-piece screw assortment kit

This mankk M-172-408PCS kit supplies 408 machine screws covering SAE #6-32, #8-32, #10-24 and metric M3, M4, M5 sizes. Phillips pan heads use 304 stainless steel for rust prevention and corrosion resistance. The transparent sorting box separates each size and includes a label for quick identification. It targets technicians, hobbyists and maintenance teams who need a broad range of common fasteners in one organised package.

Corrosion resistance under repeated use

The 304 stainless steel construction maintains integrity when exposed to moisture, chemicals or outdoor conditions over long periods. Cross groove heads reduce cam-out during sustained driving, limiting damage to both fastener and workpiece. Wide bearing surfaces distribute clamping force evenly, which helps prevent pull-through in soft materials such as plastic and wood during extended vibration or thermal cycling.

Replaces loose fastener bins and single-size packs

Builders who currently sort mixed jars or buy individual boxes gain a single labelled tray that covers the most frequent repair sizes. The jump is worthwhile when a project demands both SAE and metric threads without waiting for separate deliveries. Buyers who need larger diameters, higher grades such as 10.9 or 12.9 alloy steel, or specialised drive types will require a different assortment.