Key Features
Overview
The Kreg Shelf Pin Jig Drill Bit (1/4″) is a replacement drill bit for drilling shelf-pin holes in cabinets, bookcases, and furniture. This is a drill bit designed for precise shelf-pin hole drilling in wood. Model Number KMA3210. If you use the Kreg Shelf Pin Jig and need clean, repeatable 1/4 inch holes for adjustable shelving, this is the bit built for that job.
What matters here is control and consistency. The 1/4 inch cutting diameter matches standard shelf-pin applications, while the brad point tip helps the bit start accurately so holes stay where you intended. That makes a difference when you are drilling a long run of holes in cabinet sides or repairing worn shelving layouts in existing furniture.
Kreg builds this bit from high-speed steel, which is the right material for a wood-drilling accessory that needs to stay sharp and cut cleanly. It is a simple part, but it solves a specific problem: getting smooth holes fast without the bit skating around or leaving rough entry points that make shelf hardware fit poorly.
The 1/4 inch hex shank is another practical detail. It fits quick-change chucks, so it works well in common drill drivers and impact-ready quick-change setups used around the shop or on site. If you are building new cabinets, modifying built-ins, or doing shelf repairs, faster bit changes save time when you are going back and forth between drilling, driving, and layout work.
This bit is specifically intended for use with the 1/4 inch Kreg Shelf Pin Jig, which is the real value here. It is not just a random 1/4 inch bit. It is sized and configured for shelf pin work, and the available kit contents indicate it comes with a stop collar and Allen wrench so you can set drilling depth for repeatable hole placement.
Who should buy it? Cabinet installers, finish carpenters, furniture builders, remodelers, and serious DIY users who already own a Kreg Shelf Pin Jig or need a direct replacement bit for one. If your work includes adjustable shelving, this bit gives you the right diameter, the right tip style, and the right shank style without overthinking it.
Accurate Holes for Adjustable Shelving
This bit is made for one of those jobs where accuracy matters more than flash. When shelf holes are straight, smooth, and consistent, shelves sit right and hardware fits the way it should.
- 1/4 inch diameter for shelf-pin hole drilling
- Brad point tip helps start holes cleanly in wood
- High-speed steel construction for repeat use
- 1/4 inch hex shank fits quick-change chucks
What’s in the Box
- (1) 1/4 inch Shelf Pin Drill Bit
- (1) Stop Collar
- (1) Allen Wrench
Shelf Pin Jig is sold separately.
Key Specifications
| Bit Diameter | 1/4 in |
|---|---|
| Material | High-Speed Steel |
| Overall Length | 3 in |
| Flute Length | 1.5 in |
| Shank Type | 1/4 in Hex |
| Minimum Chuck Size Required | 3/8 in |
| Point Style | Brad Point |
| Made In | United States |
Compatibility
Built For
Pro Tip
Set the stop collar once on a scrap piece before drilling your cabinet parts. That quick test cut confirms depth and keeps you from blowing past the shelf-pin depth on finished material.
Warranty & Support
Tool Nut’s Take
Kreg Shelf Pin Jig Drill Bit (1/4″) Does the One Job It Needs to Do Right
If you own the Kreg jig, this is the correct replacement bit to keep shelf-pin work clean, fast, and repeatable.
- Who it’s for: Cabinetmakers, trim carpenters, furniture builders, and DIY users drilling 1/4 inch shelf-pin holes in wood.
- Why it stands out: Brad point accuracy, high-speed steel construction, and a 1/4 inch hex shank that works well with quick-change setups.
- Worth knowing: This is a specialized accessory for shelf-pin work, and the jig itself is sold separately.
Common Questions
- What is this bit used for? It is used to drill 1/4 inch shelf-pin holes for adjustable shelving in cabinets, bookcases, and furniture.
- Is this compatible with the Kreg Shelf Pin Jig? Yes. The source data states it is designed for use with the 1/4 inch Kreg Shelf Pin Jig.
- What type of shank does it have? It has a 1/4 inch hex shank for use with quick-change chucks.
- What material is the bit made from? The bit is made from high-speed steel.
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