Best Carriage Nut

Usongshine MGN9C Linear Rail Bearing Sliding Block Match use with MGN9 Linear Guide for CNC xyz DIY Engraving Machine (200mm, C-Type)

Surface technology: Anti-oxidation by electroplating (nickel plating).
Rail guide material: bearing steel. Rail guide length: 300mm.
Block: MGN12H ball bearing carriage. Block material: Stainless Steel. Blocks are pre-loaded.
Suggested to use M3 T nut and screws if you fix it to 20 series EU Al-profile.
There are two rubber stoppers on each side of the linear rail, it can prevent the carriage block from falling out.

Sigma Electric ProConnex 49130 EMT Conduit Hanger #2-1/2, 1-Pack

Trade size #2-1/2 for 1-1/4-in EMT conduit.

Sigma Electric ProConnex 52155 Rigid Conduit Hanger #6, 1-Pack

Trade size #6 for 2-1/2-in Rigid conduit.

Sigma Electric ProConnex 52100 EMT/Rigid Conduit Hanger #0, 50-Pack

Secures and supports Rigid and EMT conduit.
Trade size #0 for 1/2-in EMT or 3/8-in & 1/2-in Rigid conduit.

Gampak Conduit Hanger Emt 1/2 \ Csa Bag

Used to secure & suspend EMT, rigid, IMC & PVC conduits from overhead supports.

The Hillman Group 4759 3/8\-16 x 3\ Elevator Bolts, 4-Pack

Elevator nuts are made for use with a nut.
Similar to a carriage bolt except the head is thin and flat.

The Hillman Group 4752 1/4 x 2-Inch Elevator Bolt, 5-Pack

Elevator nuts are made for use with a nut.
Similar to a carriage bolt except the head is thin and flat.

The Hillman Group 4751 Elevator Bolt (1/4\-20 x 1-1/2\) - 5 Pieces

Elevator nuts are made for use with a nut.
Similar to a carriage bolt except the head is thin and flat.

The Hillman Group 4754 5/16 x 1-1/2-Inch Elevator Bolt, 4-Pack

Elevator Nuts Are Made For Use With A Nut.
Similar To A Carriage Bolt Except The Head Is Thin And Flat.

The Hillman Group 4750 1/4-20 x 1-Inch Elevator Bolt, 5-Pack

Elevator Nuts Are Made For Use With A Nut.
Similar To A Carriage Bolt Except The Head Is Thin And Flat.

The Hillman Group 4755 5/16 x 2-Inch Elevator Bolt, 4-Pack

Elevator Nuts Are Made For Use With A Nut.
Similar To A Carriage Bolt Except The Head Is Thin And Flat.

Dinkle SS2 DIN Rail Terminal Block End Bracket 32mm 35 mm Rail, Pack of 25

Fits 1-5/8" Post and 1-3/8" Rail (outside diameter).

Glvaner (8 Sets) 5/16-18 x 2-1/2' Stainless Steel Carriage Bolts Screws Round Head Square Neck and Hex Nuts & Flat Washers 304 Stainless Steel 18-8 Full Thread Coverage

Package Includes: 8 Pcs Carriage Bolts (5/16-18 x 2-1/2") + 8 Pcs Hex Nuts (5/16"-18)+ 8 Pcs 5/16" ID Flat Washers.
Screw length (including the neck): 2-1/2 inch or 63mm.
Material: 304 stainless steel (A2) and no exterior finish, greater strength and corrosion resistance performance than regular stianless steel or zinc plated fasteners..
Carriage bolts have a dome shaped head and a square neck generally requiring a hex nut and flat washer. The square neck makes them self-locking when used within a square hole..