These socket button head cap screws have threads along the entire length and have a hex drive allowing high torque perfect for clamping machinery parts together.

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.
Screws 6 x 3/8 Btn Hx Pin TR SMS 18-8 (100 pcs)
https://nsiindustries.com/product/screws-6-x-3-8-btn-hx-pin-tr-sms-18-8-100-pcs/
Screws 6 x 3/8 Btn Hx Pin TR SMS 18-8 (100 pcs)
Bolts 5/16-18 x 2-3/16 x 1-3/8 U-Blt SS (Box 50)
https://nsiindustries.com/product/bolts-5-16-18-x-2-3-16-x-1-3-8-u-blt-ss-box-50/
Bolts 5/16-18 x 2-3/16 x 1-3/8 U-Blt SS (Box 50)
Screws 8-32 x 1-1/2 RH 1way TR MS USA (100 pcs)
https://nsiindustries.com/product/screws-8-32-x-1-1-2-rh-1way-tr-ms-usa-100-pcs/
Screws 8-32 x 1-1/2 RH 1way TR MS USA (100 pcs)
Screws 8-32 x 1/2 PN Span TR MS USA 1 (100 pcs)
https://nsiindustries.com/product/screws-8-32-x-1-2-pn-span-tr-ms-usa-1-100-pcs/
Screws 8-32 x 1/2 PN Span TR MS USA 1 (100 pcs)
3/4 K-O Seal & Gasket USA 316 SS
Threaded Rod Dual Directional Assorted Rod (1 pc)
https://nsiindustries.com/product/threaded-rod-dual-directional-assorted-rod-1-pc/
Threaded Rod Dual Directional Assorted Rod (1 pc)
These socket button head cap screws have threads along the entire length and have a hex drive allowing high torque perfect for clamping machinery parts together.
Anchors 3/8 Snake+ Ancr Set Tool (bag 1)
https://nsiindustries.com/product/anchors-3-8-snake-ancr-set-tool-bag-1/
Anchors 3/8 Snake+ Ancr Set Tool (bag 1)