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

Drill Bit Sizes Chart: Fractional, Metric, Number & Letter

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

Phillips Truss Head Screw: Types, Sizes & Selection Guide

A Phillips truss head screw is not one universal fastener. Phillips identifies the drive recess, while truss identifies the broad, non-countersunk head.…

14 Screw Dimensions: Diameter, Length, Threads & Pilot Holes

A #14 screw is commonly described as approximately 1/4 inch, or about 6.3 mm, across the outside crests of its threads. This outside-thread measurement is…

Countersunk Flat Head Screw: Selection & Installation Guide

A countersunk flat-head screw is intended to finish flush with, or slightly below, a work surface. That result is not guaranteed by the words “flat head.” It…

Brass Screws: Where They Belong, Where They Fail & How Not to Snap Them

When brass screws are the right choice, where they fail, and the pilot-hole and waxing technique that stops them snapping at the head.

Impact Wrench vs Impact Driver: Which Tool Do You Need?

Choose the impact tool by the fastener, not the headline torque.

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.