Nail Gun Sizes Chart DIY Like a Pro 🔨

Not sure which nail gun size you need for your next project? This guide breaks down the different nail gun types, their sizes, and what jobs they’re perfect for.

Choosing the right nail gun size is the difference between a polished, professional finish and a messy, split-wood disaster.

Why Nail Gun Sizes Matter

Nail guns are designed for specific nail lengths and gauges. Using the wrong size can damage materials, create weak joints, or leave unsightly holes. Matching the nail gun size to your DIY task ensures both safety and quality.

Common Nail Gun Types and Sizes

Nail Gun Type	Nail Gauge / Size Range	Best For
Brad Nailer	18-gauge, 5/8" – 2" nails	Light trim, molding, crafts
Finish Nailer	15- or 16-gauge, 1" – 2.5" nails	Baseboards, cabinets, crown molding
Framing Nailer	8- to 12-gauge, 2" – 3.5" nails	Structural framing, decks, fencing
Pin Nailer	23-gauge, 3/8" – 1" pins	Small delicate trim, thin moldings
Roofing Nailer	11-gauge, 3/4" – 1.75" nails	Shingles, roofing underlayment
Flooring Nailer	Specialized cleats or staples	Hardwood floor installation

How to Read a Nail Gun Sizes Chart

• Gauge = thickness of the nail (higher number = thinner nail).

• Length = how deep the nail goes into material.

• Angle = magazine angle (e.g., 15°, 21°, 30°) determines accessibility in tight spaces.

Pro Tip: Always match your fastener gauge and length to both the tool and the material — forcing mismatched nails leads to jams or splits.

DIY Tips for Using Nail Guns

1. Test on Scrap First — Fire a few nails into a test board to check depth.

2. Adjust Depth Setting — Prevents nails from sinking too deep or sticking out.

3. Hold Square to Material — Ensures nails go straight without bending.

4. Use Correct Air Pressure — Too much pressure splits wood; too little leaves nails exposed.

5. Wear Safety Gear — Nail guns can misfire; always use goggles and gloves.

Conclusion

Nail gun sizes may seem confusing at first, but once you know the basics of gauges, lengths, and applications, it’s easy to choose the right tool. Use brad and finish nailers for trim, framing nailers for structure, and specialty nailers for roofing or flooring. With the right size, your DIY projects will look professional every time.

FAQ

What size nail gun do I need for baseboards? A 15- or 16-gauge finish nailer is best for baseboards.

Can I use a brad nailer for crown molding? Sometimes, but a finish nailer gives stronger holding power.

What’s the difference between brad and finish nailers? Brads are thinner (18-gauge) for light trim, while finish nails are thicker (15–16-gauge) for heavier trim.

What nail gun is used for framing? A framing nailer with 2" – 3.5" nails is ideal for structural work.

Are all nails interchangeable between guns? No, always use the exact gauge and length recommended for your nail gun.