dfh.fm
M3-0.5 A2 / 18-8 Stainless Steel Semi-Flanged Knurled-Head Thumb Nut
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M3 × 0.5 stainless thumb nut for hand-adjusted printer hardware. A compact semi-flanged knurled-head nut with an 8 mm head diameter, made from A2 / 18-8 stainless steel for corrosion-resistant, tool-free adjustment.
Why use this over a hex nut?
- Tool-free grip: the knurled outer head is made to turn by hand, useful for covers, brackets, tensioners, fixtures, and parts that come on and off often.
- Small footprint: thumb nuts fit tighter spaces than wing nuts while still giving more finger purchase than a standard M3 hex nut.
- Semi-flanged face: the raised shoulder/flange gives a broader bearing surface than the knurled body alone.
- A2 / 18-8 stainless: suitable for damp shop environments and printer enclosures where plain steel hardware can rust.
Specifications
- Thread: M3 × 0.5 mm, right-hand internal thread
- Head style: knurled thumb nut with semi-flanged/shouldered face
- Head diameter: 8 mm
- Material: A2 / 18-8 stainless steel
- Sold as: single thumb nut
Intended use
Use anywhere a 3D-printer mod, fixture, cover, or small assembly needs an M3 nut that can be loosened and tightened by hand instead of with a wrench.
Gotchas
- This is a nut, not a screw or bolt; pair it with an M3 screw, stud, or threaded rod.
- It is stainless, not black oxide and not brass.
- It is not a locking nut; use threadlocker or a locknut where vibration resistance is required.
Shipping & Returns
Returns:
Thank you for purchasing from dfh.fm. I want you to be completely satisfied with your purchase. If for any reason you are not satisfied, you may return your purchase within 60 days of the original purchase date.
Defective items: Please inspect items upon receipt. If you receive a defective item, you may return it for a full refund or replacement within 90 days of the original purchase date. Please contact me to initiate a return for a defective item.
Non-defective items: If you are not satisfied with a non-defective item, you may return it for a refund within 30 days of the original purchase date. A 20% restocking fee will be deducted from the refund amount, to offset the time and inconvenience, as I am the sole employee processing the return and restocking the item. The fee also covers the costs associated with processing the return. Refunds for non-defective items will be issued through the original payment method.
Preordered items: Due to the nature of preorders, delivery dates are subject to change. Please keep in mind that, If you have preordered an item, it is not eligible for a refund until after it has arrived at the store. Once the item arrives at the store and is inspected, you may request a refund within 30 days of the original purchase date. Please note that refunds for preordered items may take up to 10 days to be issued.
To initiate a return, please open a ticket on the shop’s discord channel, with your order number and the reason for the return. We will provide you with further instructions on how to return your purchase.
Thank you for shopping with us. If you have any questions or concerns, please don't hesitate to contact me, via Discord.
Order alterations and cancellations:
Once an order has ben submitted, no alterations can be made. This includes adding or removing items or canceling orders. You are welcome to return an order, once you have taken receipt, following the returns procedure listed above.
Shipping:
US Shipping is via UPS or USPS. The way it is set up shows the least expensive options for standard, priority and express shipping. I can not take special requests for specific carriers at this time.
International shipping is mostly UPS, as I utilize Zonos/UPS integration to tally extremely accurate import and shipping costs.
I require a telephone and email with international orders and you must make yourself available to the carrier or your customs, should they require more information. If you are unreachable and the package is discarded or rerturned, I will not be responsible for rerturning your shipping cost.
If there is a problem with an international order, it is my choice to refund part or all of the order, or send a replacement.
Addresses are verified through Shopify, but the customer is still responsible for inputting their address in the correct format. Any returns or lost shipments, due to incorrectly addressed packages, are the responsibility of the customer.
