B Power Tools
screws

From first pilot hole to clean drive

Learn the system in order: read the fastener, match the bit and driver, choose the pilot hole, drive with control, then diagnose what went wrong.

Start the learning path →
Start here

View the Drill Bit Sizes Chart

2026-08-07

Power tools from zero to one

5 stages · build in order
  1. 01

    Read the fastener

    Head · drive · diameter · length · thread
    What’s happening
    Learn which part of a screw name describes shape, fit, material, and holding behavior.
    What you’ll notice
    You can explain why Phillips truss head and countersunk flat head are not interchangeable descriptions.
    What to do
    Start with fastener anatomy before choosing a bit or tool.
    Foundation
  2. 02

    Match the interface

    Fastener ↔ bit ↔ driver
    What’s happening
    Match the recess to the correct bit profile and size, then choose a drill, driver, or impact tool.
    What you’ll notice
    The bit seats fully without rocking and the tool suits the fastening job.
    What to do
    Use the matcher before buying another tool.
    Compatibility
  3. 03

    Prepare the material

    Pilot · clearance · countersink
    What’s happening
    Select a pilot hole from the screw root, material hardness, and thread engagement needed.
    What you’ll notice
    The hole guides the screw without removing the material the threads must hold.
    What to do
    Test on scrap when the material or finish is unforgiving.
    Setup
  4. 04

    Drive with control

    Speed · torque · alignment
    What’s happening
    Keep the bit square, start slowly, and use only enough torque to seat the fastener.
    What you’ll notice
    The head seats cleanly without cam-out, crushing, or stripping.
    What to do
    Stop when the joint is seated; more trigger is not more secure.
    Technique
  5. 05

    Diagnose the failure

    Strip · snap · split · stall
    What’s happening
    Trace the symptom back to interface fit, pilot size, material, alignment, speed, or torque.
    What you’ll notice
    You can change one variable instead of guessing at a stronger tool.
    What to do
    Fix the cause before repeating the drive.
    Troubleshoot

Use this as a learning path, not a shopping list. Each stage removes one common source of stripped heads, split material, snapped screws, or unnecessary tool purchases.

Guides

Screw Head Styles

Phillips Truss Head Refers to Two Screw Features

Phillips identifies the drive recess, while truss identifies the broad, non-countersunk head. Those terms alone do not prove two screws are interchangeable.
Screw Dimensions

#14 Screw Dimensions Vary by Type

One production wood-screw guide puts thread diameter at 0.235-0.246 in. and body diameter at 0.190-0.201 in., showing why measurement point matters.
Screw Head Styles

Choose and Fit a Countersunk Flat-Head Screw

For a reliable flush fit, define the installed height, use the selected screw's drawing, match the countersink and test a representative sample.
Screw Materials

Brass Screws Have Clear Uses and Limits

Brass has roughly one-third to half the tensile strength of steel, and the head can twist off abruptly, leaving a soft shank that extractors struggle to grip.
Power Tool Comparisons

Impact Wrench vs Impact Driver: Fastener Type Decides

Screws favor a driver and sockets favor a wrench. A driver may still be enough when socket work is occasional, accessible, and light.

How this site is written

Dimensions and compatibility depend on the exact fastener, material, tool, and manufacturer. We show the matching logic and name the source; verify the packaging and tool manual before drilling or driving.