OpenBuilds V-Slot T-nut bolts screw size
M5 · 8 to 25 mm long
The screws used on OpenBuilds V-Slot T-nut bolts are M5 in lengths from 8 to 25 mm.
It is listed for V-Slot 20x20/20x40 uses M5 T-slot bolts.
This entry is marked reported and comes from printables.com.
For reference, M5 is 5 mm across the threads at 0.8 mm pitch. The imperial size people confuse it with: #10-32 (4.83 mm) — the other common rack thread; check before mixing.
OpenBuilds V-Slot T-nut bolts screw specifications
One row per fitment record. Head, drive are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M5 | 8–25 mm | 0.8 mm | not stated | not stated | V-Slot 20x20/20x40 uses M5 T-slot bolts | Reported |
Fitment records and sources
V-Slot 20x20/20x40 uses M5 T-slot bolts
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- Printer and CNC builds usually publish a bill of materials; when it lists a length, follow it, since extrusion T-nuts and motor faces have fixed thread depths.
- Diameter: across the threads an M5 screw measures about 5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.8 mm from one thread crest to the next (12.5 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 8–25 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M5 heads take PH2 for Phillips and T25 for Torx, and a 4 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
- Tightening: no device-specific torque is published in these records. The site's general figure for M5 is about 4.0-6.0 N·m into metal threads and 1.5-2.5 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M5
- Shimano SPD cleat bolts are widely sold as M5 x 8, but Shimano's own dealer manuals don't state the thread — check the old bolt.
- Truss and stage-light clamps use M8 or M10 bolts depending on tube diameter — larger than anything in this database, so don't substitute an M6.
Buy these screws at TechSpare Warehouse
In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.
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$5.99Choose size -
M5 x 10mm Black Wafer Head Folding Mechanism Screws for GOTRAX GXL V2, Rival, XR Ultra & XR Elite – 10-Pack Replacement
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Devices whose records share a thread with OpenBuilds V-Slot T-nut bolts, closest length match first.
- Avid CNC router mount also M5 × 20 mm
- Voron gantry and frame joints also M5 × 8–16 mm
- Voron 2.4 / Trident also M5 × 8–25 mm
- 2020 T-slot hammer head bolts also M5 × 8–25 mm
- Shapeoko 5 Pro CNC router also M5 × 10 mm
- 2040 extrusion T-nuts also M5 × 8–20 mm
- Printer / CNC extrusion frame bolts also M5 × 8–25 mm
- 2020/2040 extrusion end tap also M5 × 8–16 mm
Questions about OpenBuilds V-Slot T-nut bolts screws
- What size screw does OpenBuilds V-Slot T-nut bolts use?
- M5 × 8–25 mm for V-Slot 20x20/20x40 uses M5 T-slot bolts.
- How long are the screws in OpenBuilds V-Slot T-nut bolts?
- The records range from 8 to 25 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M5 screw?
- 0.8 mm (coarse), which is the standard pitch for M5 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 4.2 mm and the normal clearance hole is 5.5 mm.
- What screwdriver do I need for OpenBuilds V-Slot T-nut bolts?
- The sources do not name the drive. For M5, Phillips heads normally take PH2 and Torx heads T25; socket heads take a 4 mm hex key.
- Can I use an imperial screw instead of M5?
- No. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing. Use a true M5 screw so it does not cross-thread or strip the hole.