Fasteners and Hardware
Tech specs for the fasteners and hardware in FarmBot Express. Visit our shop to purchase parts.
| Component | $/Unit | Express Qty | Express Subtotal | XL Qty | XL Subtotal | MAX Qty | MAX Subtotal |
|---|---|---|---|---|---|---|---|
| M2.5 x 4mm Screws | $0.15 | 8 | $1.20 | 8 | $1.20 | 8 | $1.20 |
| M2.5 x 11mm F/F Standoffs | $0.50 | 2 | $1.00 | 2 | $1.00 | 2 | $1.00 |
| M3 x 12mm Screws | $0.15 | 16 | $2.40 | 16 | $2.40 | 16 | $2.40 |
| M3 Locknuts | $0.10 | 4 | $0.40 | 4 | $0.40 | 4 | $0.40 |
| M5 x 10mm Screws | $0.15 | 56 | $8.40 | 72 | $10.80 | 72 | $10.80 |
| M5 x 16mm Screws | $0.20 | 14 | $2.80 | 14 | $2.80 | 14 | $2.80 |
| M5 x 20mm Screws | $0.24 | 12 | $2.88 | 12 | $2.88 | 12 | $2.88 |
| M5 x 25mm Screws | $0.26 | 2 | $0.52 | 2 | $0.52 | 2 | $0.52 |
| M5 x 30mm Screws | $0.30 | 12 | $3.60 | 12 | $3.60 | 12 | $3.60 |
| M5 x 40mm Screws | $0.40 | 8 | $3.20 | 8 | $3.20 | 8 | $3.20 |
| M5 Flange Locknuts | $0.20 | 34 | $6.80 | 34 | $6.80 | 34 | $6.80 |
| M5 x 6mm Spacers | $0.20 | 5 | $1.00 | 5 | $1.00 | 5 | $1.00 |
| M5 x 14.5mm Spacers | $0.30 | 4 | $1.20 | 4 | $1.20 | 4 | $1.20 |
| M5 x 6mm Eccentric Spacers | $2.00 | 5 | $10.00 | 5 | $10.00 | 5 | $10.00 |
| M5 Tee Nuts | $0.40 | 10 | $4.00 | 10 | $4.00 | 10 | $4.00 |
| 20mm Nut Bar | $1.50 | 2 | $3.00 | 2 | $3.00 | 2 | $3.00 |
| 40mm Nut Bar | $1.75 | 11 | $19.25 | 15 | $26.25 | 15 | $26.25 |
| 60mm Nut Bar | $2.00 | 17 | $34.00 | 21 | $42.00 | 21 | $42.00 |
| 25mm Wood Screws | $0.05 | 15 | $0.75 | 15 | $0.75 | 15 | $0.75 |
| Dowel Pins | $2.00 | 0 | $0.00 | 3 | $6.00 | 3 | $6.00 |
| 200mm Zip Ties | $0.10 | 4 | $0.40 | 4 | $0.40 | 4 | $0.40 |
| 3mm Hex Driver | $5.00 | 1 | $5.00 | 1 | $5.00 | 1 | $5.00 |
| 8mm Wrench | $3.00 | 1 | $3.00 | 1 | $3.00 | 1 | $3.00 |
| TOTALS | 243 | $114.80 | 270 | $138.20 | 270 | $138.20 |
M2.5 Screws
These screws are used to mount the electronics boards into the electronics box.
| Length | 4mm |
| Threads | M2.5 |
| Drive Size | 2mm |
| Price | $0.15 |
| Quantity | 8 |
M2.5 x 4mm Screws
M3 Screws
M3 screws are used throughout FarmBot for mounting motors and other small electronic components on the tools.
| Trade Name | M3 Low-Profile Socket Head Cap Screw |
| Material | 18-8 Stainless Steel |
| Lengths | 12mm |
| Threads | M3 x 0.5mm |
| Head Height | 2mm |
| Head Diameter | 5.5mm |
| Socket Size | 2mm Hex |
| Tensile Strength | 70,000 psi |
| Price | 12mm - $0.15 |
| Quantity | 12mm - 16 |
M3 x 12mm Screws
M5 Screws
M5 button-head screws of various lengths are used throughout FarmBot to attach plates and 3D printed parts to extrusions, V-wheels to plates, and other components together. They are usually used in combination with M5 washers, and terminated with an M5 tee nut or locknut. The button head provides a wide bearing surface, a low-profile head, and a finished appearance. Length is measured from under the head.
| Trade Name | Button-Head Socket Cap Screw |
| Material | 18-8 Stainless Steel |
| Tensile Strength | 70,000psi |
| Lengths | 10, 16, 20, 25, 30 and 40mm |
| Threads | M5, 0.8 pitch |
| Head Type | 3mm Hex |
| Head Height | 2.75mm |
| Head Diameter | 9.5mm |
| Price | 10mm - $0.15 16mm - $0.20 20mm - $0.24 25mm - $0.26 30mm - $0.30 40mm - $0.40 |
| Quantity | 10mm - Express: 56, Express XL and MAX: 72 16mm - Express: 14, Express XL and MAX: 14 20mm - Express: 12, Express XL and MAX: 12 25mm - Express: 2, Express XL and MAX: 2 30mm - Express: 12, Express XL and MAX: 12 40mm - Express: 8, Express XL and MAX: 8 |
M5 x 10mm Screws
M5 x 16mm Screws
M5 x 20mm Screws
M5 x 25mm Screws
M5 x 30mm Screws
M5 x 40mm Screws
Locknuts
Locknuts are used throughout FarmBot to secure M3 and M5 screws in place. The nylon insert allows the locknut to resist loosening when subjected to vibration.
| Trade Name | Nylon-Insert Locknut |
| Threads | M3 x 0.5mm, M5 x 0.8mm |
| Height | M3 - 4mm M5 - 5mm |
| Width | M3 - 5.5mm M5 - 8mm |
| Material | 18-8 Stainless Steel |
| Price | M3 - $0.10 M5 - $0.15 |
| Quantity | M3 - 4 M5 - 34 |
M3 Locknuts
M5 Flange Locknuts
Spacers
These spacers are used to offset V-wheels from plates so that they may engage extrusions.
| Material | Aluminum |
| Outer Diameter | 10mm |
| Inner Diameter | 5.10mm |
| Length | 6mm, 14.5mm |
| Price | 6mm - $0.20 14.5mm - $0.30 |
| Quantity | 6mm - 5 14.5mm - 4 |
M5 x 6mm Spacers
M5 x 14.5mm Spacers
Eccentric Spacers
When rotated, eccentric spacers accurately position V-wheels on a plate such that they can firmly engage V-slot aluminum extrusions. They are only used on wheels on one side of an extrusion. Adjustments are made by using a 8mm wrench on the spacer itself.
| Material | Stainless Steel |
| Height | 6mm (not including rim) |
| Bore | 5mm |
| Rim | Fits into a 7.12mm hole |
| Hex Size | 8mm |
| Divot | Indicates shortest distance from rim to bore |
| Price | $2.00 |
| Quantity | 5 |
M5 x 6mm Eccentric Spacers
Standoffs
These F/F standoffs are used to offset the Raspberry Pi Zero from the Farmduino Express board.
| Material | Stainless steel |
| Lengths | 11mm |
| Male Threads | M2.5 |
| Female Threads | M2.5, 4mm length |
| Price | $0.50 |
| Quantity | 4 |
Tee Nuts
Combined with screws, these drop-in style tee nuts allow components such as plates and 3D printed parts to be attached quickly and securely anywhere on a V-slot aluminum extrusion.
| Trade Name | Drop-in Tee Nut |
| Material | Stainless Steel |
| Threads | M5 x 0.8mm pitch |
| Fits Slot Size | 6 |
| Price | $0.40 |
| Quantity | 10 |
M5 Tee Nuts
Nut Bars
These stainless steel bars act as long tee nuts allowing two screws to securely hold plates, brackets, and other components to a v-slot extrusion.
| Material | Stainless steel |
| Threads | M5 x 0.8mm pitch |
| Fits Slot Size | 6 |
| Price | 20mm - $1.50 40mm - $1.75 60mm - $2.00 |
| Quantity | 20mm - Express: 2, Express XL and MAX: 2 40mm - Express: 11, Express XL and MAX: 15 60mm - Express: 17, Express XL and MAX: 21 |
20mm Nut Bar
40mm Nut Bar
60mm Nut Bar
Wood Screws
These are used to attach the track end plates and track joining plates to supporting infrastructure such as a raised.
| Material | Steel |
| Finish | Black Oxide |
| Length | 25mm |
| Head Diameter | 12mm |
| Price | $0.05 |
| Quantity | 15 |
Dowel Pins
These pins were used to help align the gantry main beams on XL and MAX devices during assembly.
No longer recommended
Due to manufacturing tolerances with the aluminum extrusions, we no longer recommend using these components in the assembly. Use a flat surface, such as a table, to help align the gantry main beams instead.
| Material | Stainless Steel |
| Length | 40mm |
| Diameter 1 | 4.2mm |
| Diameter 2 | 4.25mm |
| Price | $2.00 |
| Quantity | Express: 0 Express XL: 3 Express MAX: 3 |
Zip Ties
Zip ties are used to fasten the vacuum pump and solenoid valve.
| Material | Nylon |
| Color | Black |
| Length | 200mm |
| Price | $0.10 |
| Quantity | 10 |
200mm Zip Ties
3mm Hex Driver
This hex (allen) driver is used to tighten all of the M5 screws on FarmBot.
| Hex Size | 3mm |
| Bit Material | Hardened steel with a titanium nitride coating |
| Handle Material | Anodized aluminum |
| Price | $5.00 |
| Quantity | 1 |
8mm Wrench
The wrench is for tightening M5 locknuts and adjusting eccentric spacers throughout FarmBot.
| Size | 8mm |
| Price | $3.00 |
| Quantity | 1 |
