About Fastener Guide

Fastener Guide (fastenerguide.xyz) is an independent reference for every fastener — screws, bolts, nuts, washers, rivets, anchors, pins, and more. Each page explains what a fastener is, its anatomy, sizes, grades, materials, and typical uses, alongside head-to-head comparisons, printable reference charts, and interactive calculators.

Who it is for

Fastener Guide is written for the people who actually drive, torque, and spec fasteners: engineers checking a callout, machinists confirming a fit, woodworkers choosing a screw, mechanics replacing hardware, and DIYers standing in the fastener aisle wondering what the numbers mean. If a page does not help one of those readers make a decision, it does not belong here.

How our pages are built

Every reference page follows the same structure — definition, anatomy, sizing, grades, materials, uses, alternatives, and frequently asked questions — so you always know where to look. Dimensions, grades, proof loads, and torque values are cross-checked against governing engineering standards (ASME, ISO, DIN, SAE, ASTM) and manufacturer data, and comparison verdicts state plainly which side wins and why, including where the honest answer is “it depends.” Pages are revised as standards update and as reader questions reveal gaps.

Corrections policy

Fastener data has to be right — people build things from it. When an error is confirmed against the governing standard or manufacturer data, the page is corrected in place as quickly as possible. If you spot something wrong, we would rather hear about it than host it.

How the site pays for itself

Some product links on Fastener Guide are affiliate links: if you buy through them, we may earn a commission at no extra cost to you. Affiliate relationships never decide which fastener a comparison recommends — verdicts are written from the engineering first, and the shopping boxes follow the verdict, not the other way around.

A note on critical work

Spec values on this site are provided for reference and should always be confirmed against the governing standard and manufacturer data before critical assembly. If a joint failure could injure someone — structural connections, lifting, brakes, pressure systems — have the design reviewed by a qualified engineer.