ABS-Lock Nuts 8mm (Jam Nut, 3D Printed Workshop Tool)

A fix that fits your shop, not somebody else's.

1.9k downloads in the maker community

$9.99

Color: Gray

Printed in the USA when you order.

1.You order it
2.We print it fresh
3.It ships to you

Works as a jam nut to back up your standard 8mm (or 5/16") hardware
Designed to function like a nylon insert lock nut in non-critical uses
Based on OpenSCAD Metric Fasteners library—precision meets practicality
Perfect for DIY projects, prototypes, and workshop experiments

Meet the ABS-Lock Nut: a clever 3D printed workshop tool that steps in when you need a jam nut for your 8mm hardware (or 5/16" imperial). Trimmed down from Giles Bathgate's OpenSCAD Metric Fasteners library, this little nut backs up your bolts and works similarly to a nylon insert lock nut—minus the metal price tag.

Use it to secure assemblies in non-critical applications, prototype mechanical builds, or keep your workshop stocked with custom fasteners on demand. It's a simple, functional piece that shows off what 3D printing does best: turning open-source designs into real tools you can actually use.

Whether you're tinkering with a new build or need a quick replacement nut, this ABS-Lock gives you that satisfying click of a problem solved.