Page Contents

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
4 M3 x 5mm Screws $0.10 $0.40
18 M3 x 10mm Screws $0.15 $2.70
2 M3 x 12mm Screws $0.15 $0.30
20 M3 x 25mm Screws $0.25 $5.00
12 M3 x 30mm Screws $0.30 $3.60
27 M3 Locknuts $0.10 $2.70
6 M4 x 16mm Screws $0.25 $1.50
2 M5 x 6mm Screws $0.40 $0.80
175 M5 x 10mm Screws $0.15 $26.25
25 M5 x 16mm Screws $0.20 $5.00
50 M5 x 30mm Screws $0.30 $15.00
2 M5 x 45mm Screws $0.50 $1.00
70 M5 Washers $0.05 $3.50
18 M5 x 6mm Spacers $0.20 $3.60
15 M5 x 6mm Eccentric Spacers $2.00 $30.00
70 M5 Locknuts $0.10 $7.00
175 M5 Tee Nuts $0.35 $61.25
35 25mm Wood Screws $0.05 $1.75
2 Camera Mounts $1.50 $3.00
754 TOTALS   $181.05

M2.5 Screws

Length 4mm
Threads M2.5
Price $0.15
Quantity 18

M2.5 Standoffs

These standoffs are used to offset the Arduino and the Raspberry Pi from the electronics mounting plate.

6mm length

16mm length

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

M3 Screws

5mm length

10mm length

12mm length

25mm length

30mm length

Trade Name M3 Low-Profile Socket Head Cap Screw
Material 18-8 Stainless Steel
Lengths 5mm, 10mm, 12mm, 25mm, and 30mm
Threads M3 x 0.5mm
Head Height 2mm
Head Diameter 5.5mm
Socket Size 2mm Hex
Tensile Strength 70,000 psi
Recommended Supplier McMaster Carr (United States)
Price 5mm - $0.10
10mm - $0.15
12mm - $0.15
25mm - $0.25
30mm - $0.30
Quantity 5mm - 4
10mm - 18
12mm - 2
25mm - 20
30mm - 12

M3 Locknuts

Twelve of these locknuts are used to secure the UTM electronic pin screws in place. The nylon insert allows them to resist loosening when subjected to vibration.

Trade Name Nylon-Insert Locknut
Threads M3 x 0.5mm
Height 4mm
Width 5.5mm
Material 18-8 Stainless Steel
Recommended Supplier McMaster Carr - Part Number 93625A100 (United States)
Price $0.10
Quantity 27

M4 Screws

Six of these screws are used to secure the electronics box cover to its base.

Material 18-8 Stainless Steel
Threads M4 x 0.7mm
Length 16mm
Head Type 3mm socket head cap
Price $0.25
Quantity 6

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.

6mm length

10mm length

16mm length

30mm length

45mm length

Trade Name Button-Head Socket Cap Screw
Material 18-8 Stainless Steel
Tensile Strength 70,000psi
Lengths 6, 10, 16, 30, and 45mm
Threads M5, 0.8 pitch
Head Type 3mm Hex
Head Height 2.75mm
Head Diameter 9.5mm
Recommended Supplier McMaster Carr (United States)
Price 6mm - $0.40
10mm - $0.15
16mm - $0.20
30mm - $0.30
45mm - $0.50
Quantity 6mm - 2
10mm - 175
16mm - 25
30mm - 50
45mm - 2

M5 Washers

These washers are used throughout FarmBot in combination with M5 screws and M5 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
Recommended Supplier McMaster Carr (United States)
Supplier Part Number 93475A240
Price $0.05
Quantity 70

M5 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
Recommended Supplier OpenBuilds (United States)
Price $0.20
Quantity 18

M5 x 6mm 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
Recommended Supplier OpenBuilds (United States)
Price $2.00
Quantity 15

M5 Locknuts

These nuts resist loosening because their nylon insert grips the screw that they are attached to. They are used in combination with M5 screws throughout FarmBot.

Material 18-8 Stainless Steel
Hex Size 8mm
Height 5mm
Threads M5 x 0.8 pitch
Locking Mechanism Nylon Insert
Recommended Supplier McMaster Carr (United States)
Supplier Part Number 93625A200
Price $0.10
Quantity 70

M5 Tee Nuts

Combined with M5 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 $0.35
Quantity 175

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 25cm
Head Diameter 12mm
Recommended Supplier Home Depot (United States)
Price $0.05
Quantity 35

Camera Mounts

These stainless steel loop clamps are used to secure the camera to the z-axis.

Trade Name Loop Clamp
Material 321 Stainless Steel
ID 3/8”
Center-to-Center Length 1/2”
Length 15/16”
Width 3/8”
Height 7/16”
Thickness 1/32”
Mounting Hole Diameter 13/64”
Recommended Supplier McMaster Carr, part number 8863T66
Price $1.50 each
Quantity 2