Fasteners & Screws

Structural screws, deck fasteners, lag bolts, screw sizing, pilot holes, and pressure-treated lumber fasteners.

25 guides

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Fasteners Screws

25 articles

Open socket set, combination wrenches and a torque wrench on a workshop bench with assorted hex bolts and nuts

Aug 4, 202629 min read

Bolt and Wrench Size Chart: SAE, Metric, Torque & Thread Pitch

Wrench and socket sizes for every SAE and metric bolt, plus thread pitch, heavy hex differences, SAE-to-metric near-swaps, and torque values derived f

An assorted collection of wood, drywall, machine, and lag screws scattered on a dark workbench surface

Jul 31, 202622 min read

Screw Size Chart: Every Type, Gauge & Pilot Hole (Wood, Drywall, Metal, Machine, Lag)

A #8 x 1-1/2 screw means nothing until you know what the numbers mean. Complete sizing chart for every screw type, with real pilot hole and clearance

Carpenter driving a nail into wall stud framing with a hammer, open box of assorted nails spilled on a sawhorse in the foreground

Jul 25, 202619 min read

Nail Size Chart: Penny Sizing Explained (8d, 10d, 16d & More)

J-bolts embedded in a concrete foundation with a wood sill plate being installed

Jul 12, 20266 min read

Foundation Anchor Bolts: Code Spacing, Embedment & Seismic Retrofit (2026)

Anchor bolts tie the sill plate to the foundation, resisting exactly the uplift and lateral loads that matter most in an earthquake or windstorm. New

Contractor installing a toggle bolt anchor into drywall, with assorted drywall anchor types nearby

Jul 12, 202626 min read

5 Types of Drywall Anchors — How Much Weight Can Drywall Hold? (2026)

Drywall is gypsum sandwiched in paper - it has almost no shear strength on its own. The right anchor spreads your load over enough of it to hold safel

Wedge anchor and epoxy anchor threaded rod side by side showing mechanical versus chemical bonding methods

Jul 5, 202612 min read

Wedge Anchor vs. Epoxy Anchor: Which One Do You Need? (2026)

Wedge anchors are faster with no cure time. Epoxy anchors deliver higher capacity, work near edges, in cracked concrete, and resist vibration loosenin

Molly bolt and toggle bolt side by side showing the expanding sleeve versus spring-loaded wing mechanisms

Jul 5, 202610 min read

Molly Bolt vs. Toggle Bolt: Which One Do You Need? (2026)

Molly bolts handle 25-50 lbs and are easy to reuse. Toggle bolts carry 75-150+ lbs but are permanent once installed. Full comparison with real weight

Drop-in anchor and wedge anchor side by side showing flush socket versus protruding stud design

Jul 5, 202612 min read

Drop-In Anchor vs. Wedge Anchor: Which One Do You Need? (2026)

Wedge anchors are faster and stronger in shear. Drop-in anchors need a setting tool but outperform wedge anchors in overhead tension loads and offer a

Wedge anchor and sleeve anchor side by side showing expansion clip differences

Jul 4, 202610 min read

Wedge Anchor vs. Sleeve Anchor: Which One Do You Need? (2026)

Wedge anchors carry 40-60% more holding capacity but only work in solid concrete. Sleeve anchors are weaker but work in brick and hollow block. Full c

Two rows of wood screws arranged smallest to largest across a dark walnut workbench

Jun 26, 20268 min read

Wood Screw Size Chart: Complete Guide to Types, Gauges & Lengths (2026)

Complete wood screw size chart — gauge to diameter conversion, correct lengths for different wood thicknesses, pilot hole sizes, and which head type t

Two hex bolt heads side by side showing three-line Grade 5 and six-line Grade 8 radial markings

Jun 26, 20267 min read

Bolt Grades Explained: Grade 5 vs Grade 8 vs Stainless (Which Do You Need?)

Bolt grades explained — Grade 5 vs Grade 8 vs stainless steel. Tensile strength, proof load, markings, and which grade to use for structural, automoti

Impact driver setting a self-drilling Tek screw with a bonded sealing washer into steel decking

Jun 26, 20266 min read

Self-Drilling Screws (Tek Screws): Complete Guide to Types, Sizes & Applications

Complete guide to self-drilling screws (Tek screws) — drill point numbers, sizes, thread types, and which to use for sheet metal, metal framing, roofi

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All Fasteners & Screws Guides

Complete index — 25 guides