dfh.fm
M4 Nickel Plated Slot Head Binding Barrels and Screws
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M4 nickel-plated binding barrels and screws for removable clamping joints. Each set pairs an internally threaded barrel/post with a matching M4 screw; choose 20 mm, 25 mm, or 30 mm barrel length.
Why use binding barrels here
- Removable two-piece fastener: the barrel and screw clamp material from both sides, so panels, plates, folders, leather, fixtures, and printer mods can be opened again later.
- M4 internal thread: the screw and barrel are M4-threaded even though the outside of the barrel may be listed elsewhere by its roughly 5 mm outer diameter.
- Nickel-plated finish: silver-tone plating gives a clean, corrosion-resistant surface for visible hardware.
- Slotted head: installs with a flat-blade screwdriver; no hex key required.
Specifications
- Thread: M4 internal barrel thread with matching M4 screw
- Barrel lengths: 20 mm, 25 mm, or 30 mm
- Finish: nickel plated, silver tone
- Fastener style: binding barrel / binding post / Chicago screw / sex bolt
- Drive: slotted head
Intended use
Useful anywhere you need a clean removable post-and-screw joint: bookbinding, leather and strap work, panels, brackets, fixtures, and 3D-printer projects that call for a binding screw or sex bolt. For Voron-style endstop work, compare the length and outside barrel diameter against the original BOM before ordering.
Pick the right length
- 20 mm: shortest stocked barrel, best when the clamped stack is thin.
- 25 mm: mid-length option when 20 mm is too short.
- 30 mm: longest stocked option for thicker stacks or spacer-style use.
What it is not
- Not a standard socket-head cap screw or machine screw by itself; it is a two-piece binding post set.
- Not guaranteed to fit every “M5 sexbolt” BOM callout unless the BOM is referring to the barrel outside diameter and the required length matches.
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.
