The best 5/8-inch spade bit depends on how deep you need to drill and whether you want a single bit or a size assortment. The IVY Classic is a straightforward choice for common wood-drilling tasks, while the Wisechain 16-inch bit is designed for deeper holes. Treela and the titanium-coated six-piece set include a 5/8-inch bit alongside other sizes. The Irwin Speedbor listed here is 7/8 inch, not 5/8 inch, so it is only an adjacent option when you also need a larger hole.
| Product | Best For | Size Note |
|---|---|---|
| IVY Classic Swift Bore | General-purpose wood drilling | 5/8 inch |
| Wisechain Long Spade Bit | Deep holes in wood | 5/8 inch, 16 inches long |
| Treela 6-Piece Set | Several hole diameters | Includes 5/8 inch |
| Six-Piece Titanium-Coated Set | Common household drilling sizes | Includes 5/8 inch |
| Irwin Speedbor | A larger 7/8-inch hole | Not 5/8 inch |
IVY Classic 5/8-Inch Swift Bore Bit
This single 5/8-inch bit is best for buyers who need a standard-diameter spade bit for wood rather than a multi-size kit or an extra-long tool. It is made from drop-forged high-carbon steel and is listed for plywood, hardwood, and softwood.
The double-fluted chip removers and sharp spurs are intended to support cutting and chip removal. The bit is electronically heat-treated and tempered to a stated Rockwell hardness of 47–52. Those details make it a relevant choice when you want a purpose-built 5/8-inch bit with listed material and heat-treatment specifications.
Limitation: The listed length is 6 inches, so choose a longer option if the hole must pass through thick lumber or a deep assembly.
Wisechain 16-Inch 5/8-Inch Spade Bit
Choose this bit if reach is more important than compact handling. Its 5/8-inch cutting size and 16-inch length are intended for deep holes in wood, including beams, studs, and thick panels. The product listing specifies 65Mn steel, a blue oxide coating, and a self-feeding tip.
The long design is the main reason to select it over a standard-length bit: it is intended to reach farther into wood without switching to a short paddle bit. Its self-feeding point is described as helping the bit enter wood with less effort, while the coating is specified for wear resistance and rust protection.
Limitation: The extra-long format is unnecessary for shallow holes and may be less convenient to control in routine drilling. The listing does not provide a short-length version in this product entry.
Treela 16-Inch Six-Size Bit Set
This set is best for buyers who need a long 5/8-inch bit but also expect to drill holes in several other diameters. It includes 3/8-, 1/2-, 5/8-, 3/4-, 7/8-, and 1-inch bits, all listed as 16 inches long.
The bits are described as heat-treated, drop-forged high-carbon steel, with a sharp spur tip for positioning and dual fluted edges for chip removal. The assortment can reduce the need to buy each diameter separately when a project calls for multiple hole sizes in wood.
Limitation: This is a set of extra-long bits, not a compact single-bit purchase. Avoid it if you only need a standard-length 5/8-inch bit for shallow holes.
Six-Piece Titanium-Coated Spade Set
This set is best for DIYers who want a 5/8-inch bit plus several smaller sizes for varied wood-drilling jobs. Its listed diameters are 1/4, 5/16, 3/8, 15/32, 1/2, and 5/8 inch. The bits have 1/4-inch quick-change hex shanks, high-carbon steel construction, and a titanium coating.
The listing also describes double-sided cutting spurs, a positioning tip, and chip-removal features. Those details make the kit a flexible choice for woodworking, cabinetry, and household projects when the included sizes match the work.
Limitation: The set stops at 5/8 inch, so it does not suit projects requiring larger holes. Its listing does not specify an extra-long bit length.
Irwin Speedbor 7/8-Inch Spade Bit
This Irwin bit is best only if your work also calls for a 7/8-inch hole. It is listed as a 6-inch Speedbor with chamfered cutting edges, and the product features claim faster drilling and longer life compared with a stated reference product.
It is included as a nearby size alternative, not as a substitute for a 5/8-inch bit. Select it when the larger diameter is the required measurement, or when you need a separate bit for another hole size.
Limitation: It is 7/8 inch, so do not choose it when the project specifically requires a 5/8-inch hole.
Buying Guide: How To Choose A 5/8-Inch Spade Bit
Do you need a standard or extra-long bit?
For ordinary holes in boards and panels, a standard-length bit such as the 6-inch IVY Classic is the more direct match. For deep holes through beams, studs, or thick panels, consider a 16-inch option. Match bit length to the drilling depth, and account for the full length needed to reach the work area.
Should you buy one bit or a set?
A single 5/8-inch bit is a simple choice when the hole size is fixed. A set makes more sense when a project requires several diameters. Compare the included sizes carefully: the Treela set includes 5/8 inch among six long sizes, while the titanium-coated set includes 5/8 inch with smaller diameters.
Which construction details matter?
Check the listed steel type, heat treatment, coating, cutting spurs, flutes, and shank. These details describe the bit’s construction and intended cutting features, but they do not guarantee a particular result in every wood type or drill. Follow the bit and drill manufacturer’s instructions for use.
How do you avoid buying the wrong diameter?
Confirm that the product listing says 5/8 inch, rather than relying on a similar-looking product name. A 7/8-inch bit makes a larger hole and is not an alternative for a precise 5/8-inch opening. Also check length and shank details before choosing.
Frequently Asked Questions
What is a 5/8-inch spade bit used for?
It drills 5/8-inch holes in wood. The appropriate bit length depends on the thickness and depth of the material.
Can a 7/8-inch spade bit replace a 5/8-inch bit?
No. A 7/8-inch bit cuts a larger hole, so it does not meet a 5/8-inch size requirement.
Is a 16-inch spade bit necessary?
Only when the hole needs more reach than a standard-length bit provides. For shallow holes, a long bit may be unnecessary.
Should I choose a single bit or a multi-size set?
Choose a single bit for a known 5/8-inch task. Choose a set if you need the additional diameters listed in that kit for other wood-drilling jobs.
What should I check before buying?
Confirm the diameter, length, shank style, material, and included sizes. Make sure each specification fits the intended drill and project requirements.