Qty. Component $/Unit Subtotal
18 M2.5 x 4mm Screws $0.15 $2.70
4 M2.5 x 6mm Standoffs $0.50 $2.00
4 M2.5 x 16mm Standoffs $0.50 $2.00
14 M3 x 5mm Screws $0.10 $1.40
40 M3 x 10mm Screws $0.15 $6.00
15 M3 x 30mm Screws $0.30 $4.50
30 M3 Locknuts $0.10 $3.00
175 M5 x 10mm Screws $0.15 $26.25
40 M5 x 16mm Screws $0.20 $8.00
45 M5 x 30mm Screws $0.30 $13.50
70 M5 Locknuts $0.10 $7.00
100 M5 Washers $0.05 $5.00
30 M5 x 6mm Spacers $0.20 $6.00
15 M5 x 6mm Eccentric Spacers $2.00 $30.00
175 M5 Tee Nuts $0.40 $70.00
35 25mm Wood Screws $0.05 $1.75
810 TOTALS   $189.10

M2.5 Screws

These screws are used to mount the electronics boards to the electronics mounting plate with the M2.5 standoffs as an intermediary component.

Length 4mm
Threads M2.5
Drive Size 2mm
Price $0.15
Quantity 18 (2 extra)

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 5mm, 10mm, 30mm, and 35mm
Threads M3 x 0.5mm
Head Height 2mm
Head Diameter 5.5mm
Socket Size 2mm Hex
Tensile Strength 70,000 psi
Price 5mm - $0.10
10mm - $0.15
30mm - $0.30
35mm - $0.35
Quantity 5mm - 14
10mm - 40
30mm - 15 (3 extra)
35mm - 5 (1 extra)

M3 x 5mm Screws

M3 x 10mm Screws

M3 x 30mm 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, and 30mm
Threads M5, 0.8 pitch
Head Type 3mm Hex
Head Height 2.75mm
Head Diameter 9.5mm
Price 10mm - $0.15
16mm - $0.20
30mm - $0.30
Quantity 10mm - 175
16mm - 40
30mm - 45

M5 x 10mm Screws

M5 x 16mm Screws

M5 x 30mm Screws


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 - 30
M5 - 70

M3 Locknuts

M5 Locknuts


Washers are used throughout FarmBot in combination with screws and locknuts. They allow nuts to be tightened on plastic components and plates while preventing damage and distributing load.

Material 18-8 Stainless Steel
Outer Diameter 10mm
Inner Diameter 5.3mm
Thickness 0.9 to 1.1mm
Price $0.05
Quantity 100

M5 Washers


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
Price $0.20
Quantity 30 (12 extra)

M5 x 6mm 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 15

M5 x 6mm Eccentric Spacers


Standoffs are used to offset the electronics boards from the electronics mounting plate.

Material Stainless steel
Lengths 6mm, 16mm
For Screw Size M2.5
Price $0.50
Quantity 4 - 6mm length
4 - 16mm length

M2.5 x 6mm Standoffs

M2.5 x 16mm Standoffs

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 175

M5 Tee Nuts

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 35

Looking for an alternative supplier of fasteners and hardware?

We recommend purchasing parts from McMaster Carr (US) or AccuGroup (Europe). Both suppliers have a wide variety of parts, fast shipping, and great customer service. They also sell components in different sizes than we do to support your custom modifications.