These screws have finer threads than typical screws, requiring a pre-drilled hole and are perfect for joining metal parts in machinery and construction.
Metallics MT208L6B Power Bits XLong 1/4 IN 6 IN (1pc)
https://nsiindustries.com/product/power-bits-xlong-1-4-6-1pc/
Power Bits XLong 1/4″ 6″ (1pc)
Metallics TSF26M Screws 8 X 2-1/2 Fh Ph TS St-zn (Box 1000)
https://nsiindustries.com/product/8-x-2-1-2-in-flat-head-phillips-tapping-screws-steel-zinc-1000qty/
These flat head tapping screws cut their own threads into a material, but still rquire a pilot hole and are typically used in construction with a variety of materials.
Metallics TS3312 Anchors 3/8 X 3-1/2 Wedge Ancr St-zn (Box 100)
https://nsiindustries.com/product/anchors-3-8-x-3-1-2-wedge-ancr-st-zn-box-100/
Anchors 3/8 X 3-1/2 Wedge Ancr St-zn (Box 100)
These pan head sharp point tapping screws cut their own threads into a material and do not require a pilot hole unless fastening metal.
Metallics MT212L4B Power Bits XLong 3/8 IN 4 IN (1pc)
https://nsiindustries.com/product/power-bits-xlong-3-8-4-1pc/
Power Bits XLong 3/8″ 4″ (1pc)
Metallics JRSH37112N5 Thread Rod 12-20 X 1-1/2 Mtl H-Mt Th-R (Jar 25)
https://nsiindustries.com/product/thread-rod-12-20-x-1-1-2-mtl-h-mt-th-r-jar-25/
Thread Rod 12-20 X 1-1/2 Mtl H-Mt Th-R (Jar 25)
Metallics TS347D Anchors 3/4 x 7 Wdg St-zn (Box 10)
https://nsiindustries.com/product/anchors-3-4-x-7-wdg-st-zn-box-10/
Anchors 3/4 x 7 Wdg St-zn (Box 10)
These indented hex head sharp point tapping screws cut their own threads into a material and do not require a pilot hole unless fastening metal.
Metallics JHTB80 Bolts 3/8-16 X 1-3/4 Hx Tap Blt St-zn (Jar 100)
https://nsiindustries.com/product/bolts-3-8-16-x-1-3-4-hx-tap-blt-st-zn-jar-100/
Bolts 3/8-16 X 1-3/4 Hx Tap Blt St-zn (Jar 100)