The reference for
everyday parts.
Standing in a hardware store wondering if CR2032 and CR2025 are the same? Not sure if your lamp takes E26 or E27? This site gives you the exact answer — dimensions, substitution rules, and nothing else.
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Batteries
Coin cells, alkaline, hearing aid — dimensions, substitution rules, and comparison pages.
Light Bulbs
LED, CFL, halogen, incandescent — efficiency, lifespan, and bulb-type comparisons.
Bulb Bases
E26, E27, GU10, G9, B22 and more — screw, pin, and bayonet families with interchangeability.
Fuses
AGC glass tube, ATC blade, mini-blade — amperage color codes and when types are interchangeable.
Fasteners
Wood screws, machine screws, hex bolts, carriage bolts, wall anchors — sizes, grades, and use cases.
Cables & Ports
USB-A, USB-C, HDMI, DisplayPort, 3.5 mm — connector specs and version compatibility.
Device Guides
What battery does a hearing aid take? What bulb base does a ceiling fan use? Plain answers by device.
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