Express Express XL
Part Notes Price Cost Qty Subtotal Subtotal Qty Subtotal Subtotal
Assembly Tools - 3mm Hex Driver No plastic bag $5.00 $1.80 1 $5.00 $1.80 1 $5.00 $1.80
Assembly Tools - 8mm Thin Wrench No plastic bag $3.00 $0.10 1 $3.00 $0.10 1 $3.00 $0.10
M2.5 x 4mm Screw Pre-assembled in the electronics box. $0.15 $0.010 8 $1.20 $0.08 8 $1.20 $0.08
M3 x 16mm Flat Head Screw 2mm Hex Drive $0.15 $0.014 8 $1.20 $0.11 8 $1.20 $0.11
M3 x 30mm Flat Head Screw 2mm Hex Drive $0.25 $0.014 2 $0.50 $0.02 2 $0.50 $0.02
M3 Locknut Pre-assembled in electronics box $0.10 $0.016 4 $0.40 $0.06 4 $0.40 $0.06
M3 x 12mm Screw --- $0.15 $0.014 16 $2.40 $0.22 16 $2.40 $0.22
M3 x 35mm Screw Pre-assembled in electronics box $0.25 $0.03 4 $1.00 $0.12 4 $1.00 $0.12
M5 Flange Locknut --- $0.20 $0.09 34 $6.80 $3.06 34 $6.80 $3.06
M5 x 10mm Screw M5 x 10mm Screw --- $0.15 $0.026 56 $8.40 $1.45 72 $10.80 $1.87
M5 x 16mm Screw M5 x 16mm Screw --- $0.20 $0.033 8 $1.60 $0.26 8 $1.60 $0.26
M5 x 20mm Screw M5 x 20mm Screw --- $0.25 $0.049 10 $2.50 $0.49 10 $2.50 $0.49
M5 x 25mm Screw M5 x 25mm Screw --- $0.28 $0.049 2 $0.56 $0.09 2 $0.56 $0.09
M5 x 30mm Screw M5 x 30mm Screw --- $0.32 $0.049 10 $3.20 $0.49 10 $3.20 $0.49
M5 x 40mm Screw M5 x 40mm Screw --- $0.42 $0.055 8 $3.36 $0.44 8 $3.36 $0.44
10mm Nut Bar Nut Bar - 10mm Rev A --- $1.25 $0.30 10 $12.50 $3.00 10 $12.50 $3.00
140mm Nut Bar Nut Bar - 140mm Rev A --- $3.00 $1.09 0 --- --- 2 $6.00 $2.18
20mm Nut Bar Nut Bar - 20mm Rev A --- $1.50 $0.45 2 $3.00 $0.90 2 $3.00 $0.90
40mm Nut Bar Nut Bar - 40mm Rev A --- $1.75 $0.56 11 $19.25 $6.16 15 $26.25 $8.40
60mm Nut Bar Nut Bar - 60mm Rev B --- $2.00 $0.68 17 $34.00 $11.56 17 $34.00 $11.56
M5 x 14.5mm Spacer Rev A --- $0.30 $0.115 4 $1.20 $0.46 4 $1.20 $0.46
M5 x 6mm Spacer Rev A --- $0.20 $0.115 5 $1.00 $0.57 5 $1.00 $0.57
Eccentric Spacer Rev A --- $2.00 $0.35 5 $10.00 $1.75 5 $10.00 $1.75
Standoff Pre-assembled in electronics box $0.50 $0.045 2 $1.00 $0.09 2 $1.00 $0.09
Wood Screw --- $0.05 $0.007 15 $0.75 $0.10 15 $0.75 $0.10
Zip Tie --- $0.10 $0.015 4 $0.40 $0.06 4 $0.40 $0.06
TOTAL 247 $124.22 $33.48 269 $139.62 $38.32

Component tests

Size and shape

Test Description Target Tolerance
Drive size Use the appropriate hex or nut driver to check the drive size of screws and nuts. M3, M5, 5.5mm, 8mm, etc N/A
Screw length Measure the length of screws with digital calipers. See BOM spec. +/- 0.5mm
Threads Measure threads of screws and nuts using a thread guage See BOM spec. N/A
Head diameter Measure the diameter of screw heads with digital calipers. See BOM spec. +/- 0.2mm
Head height Measure the height of screw heads with digital calipers. See BOM spec. +/- 0.2mm
Nut height Measure the height of nuts with digital calipers See BOM spec. +/- 0.2mm
Flange diameter Measure the diameter of locknut flanges with digital calipers. See BOM spec. +/- 0.2mm

Material and appearance

Test Description Target Tolerance
Material Ensure the material is aluminum or stainless steel and will not rust by holding a magnet to the part. Aluminum or stainless steel (no magnetic attraction) Weak attraction to stainless steel is permissible.

Function

Test Description Target Tolerance
Threading Fasten screws and nuts to reference mating component to ensure thread size and quality. Components should thread together smoothly. Test 10 pieces. N/A
Locking Tighten locknuts onto a screw and try to remove by hand. Locknut should resist being removed. Test 3 pieces. N/A