Nails, Screws & Fasteners Cheat Sheet

Nail sizes, screw types, and anchor selection for various materials. Helps choose the right fastener for any project.

Common Nail Sizes

Size	Length	Common Use
6d	2"	Finish work, thin trim
8d	2-1/2"	Sheathing, siding
10d	3"	Framing, general purpose
16d	3-1/2"	Framing (most common)
20d	4"	Heavy framing, beams

Nail Types

Common Nails

Large flat head, framing & rough carpentry

Box Nails

Thinner than common, less splitting, siding

Finish Nails

Small head, can be set below surface, trim work

Brad Nails

Very thin, delicate trim, minimal splitting

Roofing Nails

Large head, galvanized, shingles & roofing

Masonry Nails

Hardened steel, concrete & brick

Screw Sizes & Types

Type	Size Range	Best Use
Wood Screws	#6 to #14	General woodworking
Deck Screws	2" to 3-1/2"	Outdoor projects, decking
Drywall Screws	1-1/4" to 2"	Drywall to studs
Construction Screws	2-1/2" to 6"	Framing, structural
Pocket Hole Screws	1" to 2-1/2"	Joinery with Kreg jig

Screw Drive Types

Phillips

Cross pattern, very common

Square (Robertson)

Less cam-out, popular in Canada

Star (Torx)

No cam-out, high torque

Hex

Structural screws, lag bolts

Anchor Types for Different Materials

Drywall Anchors

Plastic Expansion: Light loads (10-25 lbs)
Self-Drilling: Medium loads (25-50 lbs)
Toggle Bolts: Heavy loads (50-100+ lbs)
Snaptoggle: Heavy loads, reusable (100+ lbs)

Concrete & Masonry

Tapcon Screws: Concrete, brick, block
Wedge Anchors: Heavy duty, permanent
Sleeve Anchors: Versatile, removable
Concrete Screws: Quick installation

Fastener Selection Guide

Exterior: Use galvanized, stainless, or coated fasteners
Treated Lumber: Use hot-dipped galvanized or stainless
Cedar/Redwood: Use stainless to prevent staining
Hardwoods: Pre-drill to prevent splitting
Softwoods: Can direct-drive most fasteners
Rule of thumb: Fastener should be 3x thickness of material being attached

Additional Information

About This Fasteners Guide

This comprehensive fasteners cheat sheet provides essential reference information for selecting the right nails, screws, and anchors for any project. Understanding fastener types, sizes, and materials ensures your projects hold together securely and withstand the intended loads and environmental conditions.

Choosing the wrong fastener can lead to project failure - from stripped screws and split wood to corrosion stains and structural weakness. This guide covers nail sizes (penny designations), screw types and drive styles, drywall anchors for different weight capacities, and special considerations for treated lumber, exterior applications, and different wood types.

With thousands of fastener options available, knowing which one to use can be overwhelming. This reference simplifies the selection process by focusing on the most common applications in residential construction and woodworking, helping you choose fasteners that will perform properly for years to come.

Why Use This Fasteners Reference Guide?

Having quick access to fastener specifications helps ensure your projects are strong, durable, and appropriate for their environment. This guide prevents common fastener mistakes that compromise project integrity.

Select the correct nail size (penny designation) for framing, trim, and sheathing
Choose appropriate screw types and drive styles for different applications
Match drywall anchor capacity to the weight you're hanging
Use corrosion-resistant fasteners for exterior and treated lumber projects
Understand when to pre-drill to prevent wood splitting
Follow the 3x rule for proper fastener length selection

Frequently Asked Questions

What size screw should I use for most woodworking projects?

The general rule is to use a screw that's at least 3 times the thickness of the material you're fastening through. For attaching 3/4" material, use screws at least 2-1/4" long. Common all-purpose sizes are #8 x 1-1/4" for light duty and #8 x 2" for general woodworking. For structural connections, use #10 or larger. The screw should penetrate at least 1" into the base material. For hardwoods, always pre-drill with a bit slightly smaller than the screw shank to prevent splitting.

What does "16d" mean for nail sizes?

The "d" stands for "penny," an old English pricing system. The number indicates the nail length: 16d nails are 3-1/2" long - the most common framing nail. The penny system: 4d = 1-1/2", 6d = 2", 8d = 2-1/2", 10d = 3", 12d = 3-1/4", 16d = 3-1/2", 20d = 4". For framing, use 16d nails for through-nailing studs to plates and 10d for toenailing. For sheathing, use 8d nails. Finish nails for trim typically range from 4d to 8d depending on trim thickness.

Which drywall anchor should I use for heavy items?

For heavy items (50+ lbs), use toggle bolts or Snaptoggle anchors. Standard toggle bolts can hold 100+ lbs in 1/2" drywall; Snaptoggles hold similar weight and are easier to use and reusable. Self-drilling drywall anchors (25-50 lbs) work for medium loads like towel bars. Plastic expansion anchors (10-25 lbs) are only for light items like picture frames. Always locate at least one stud when hanging very heavy items - even the best drywall anchors can't match the holding power of screwing into a stud.

What screws should I use for pressure-treated lumber?

Use hot-dipped galvanized (HDG), stainless steel, or fasteners rated for ACQ-treated lumber. Regular zinc-plated screws will corrode quickly due to the copper in modern treatment chemicals, creating streaks and weakening joints. For decks, use coated deck screws rated for ground contact treatment. Stainless steel is the best choice for coastal areas or when appearance matters, as galvanized coating can leave dark marks. Check fastener packaging for "ACQ compatible" or "for treated lumber" labeling.

When should I pre-drill holes for screws?

Pre-drill when: working with hardwoods (oak, maple, walnut), driving screws near the end of a board (within 1" of edge), using large-diameter screws, or when the wood is splitting. Use a drill bit slightly smaller than the screw's inner shank diameter. For softwoods like pine and fir, pre-drilling usually isn't necessary except near edges. When attaching hardwood to softwood, pre-drill only the hardwood. Self-drilling construction screws can go into softwood without pilot holes but may still split hardwood.

What's the difference between Phillips and Torx (star) drive screws?

Phillips head (cross pattern) is common but tends to "cam out" - the bit slips out under high torque, potentially stripping the screw head. Torx (star pattern) has more contact points, providing much better torque transfer with virtually no cam-out. This makes Torx ideal for high-torque applications like deck screws and structural fasteners. Square (Robertson) drive is similar in performance to Torx. While Phillips is cheaper and more common, Torx and square drive are preferred for power driving and critical connections.

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