Prototyping Fasteners and Components

We keep a stock of small fasteners and components exclusively for course use.

Fasteners

The following are kept available in bins for course use.

Size	Description	Vendor	Vendor Ordering
M3 x 10	socket head cap screw, 2.5 mm hex socket	McMaster-Carr	91290A115
M3 x 14	socket head cap screw, 2.5 mm hex socket	McMaster-Carr	91290A119
M3 x 18	socket head cap screw, 2.5 mm hex socket	McMaster-Carr	91290A121
M3	nut, 2.3 mm thick, 5.5 mm wide	McMaster-Carr	91828A211
M3	brass screw-to-expand inserts, flanged, fits in 5/32” hole	McMaster-Carr	94510A240
M6 x 20	socket head cap screw, 5 mm hex socket	McMaster-Carr	91290A326
M6 x 25	socket head cap screw, 5 mm hex socket	McMaster-Carr	91290A330
M6 x 30	hex head screw	Fastenal	162328
M6 x 30	socket head cap screw, 5 mm hex socket	McMaster-Carr	91290A332
M6 x 35	socket head cap screw, 5 mm hex socket	McMaster-Carr	91290A334
M6 x 40	socket head cap screw, 5 mm hex socket	Fastenal	11137014
M6 x 45	socket head cap screw, 5 mm hex socket	McMaster-Carr	91290A338
M6 x 55	socket head cap screw, 5 mm hex socket	McMaster-Carr	91290A342
M6	washer, 6.4 mm ID, 12 mm OD, 1.5 mm thick	McMaster-Carr	91166A250
M6	washer, 6.4 mm ID, 18 mm OD, 1.5 mm thick	McMaster-Carr	91100A150
M6	nut, 5 mm thick, 10 mm wide	McMaster-Carr	90591A151
M6	wing nut	McMaster-Carr	94300A330
M6	brass screw-to-expand inserts, flanged	McMaster-Carr	94510A255
6 mm x 12 mm	shoulder screw	McMaster-Carr	92981A101
6 mm x 20 mm	shoulder screw	McMaster-Carr	92981A103
6 mm x 40 mm	shoulder screw	Fastenal	40019
M5	hex nut, 2.7 mm thick, 8 mm wide, for 6 mm shoulder screws	McMaster-Carr	90695A037
M5	washer, for M5 Screw Size, 5.3 mm ID, 10 mm OD, zinc-plated steel	McMaster-Carr	91166A240
6 mm x 9 mm	bushing, sleeve, SAE 841 bronze, 6 mm ID, 6 mm L, 9 mm OD	McMaster-Carr	6658K725
6 mm x 9 mm	bushing, flanged, SAE 841 bronze, 6 mm ID, 10 mm L, 9 mm OD, 12 mm flange OD	McMaster-Carr	6659K672
6 mm x 13mm	shaft collar, set screw, 6 mm ID, 8 mm W, 13 mm OD, M4 set screw	McMaster-Carr	57485K66
#8 x 1/2”	sheet metal screw, blunt, hex head (use 1/4” driver)	McMaster-Carr	93880A194
#8 x 3/4”	sheet metal screw, blunt, hex head (use 1/4” driver)	McMaster-Carr	93880A197
#8	washer, 0.172” ID, 0.375” OD	McMaster-Carr	92141A009

Drive Components

The following are available upon request.

Size	Description	Vendor	Vendor Ordering
5mm x M3	mounting hub for 5 mm shaft, M3 holes on 12.7 mm circle, for stepper motors, includes 1.5 mm hex key for set screw	Pololu	1998
NEMA17	stepper motor, 76 oz-in (5.5 Kg-cm), 1.5 Amp/phase, M3 mounting holes, 5mm shaft	Automation Technology	KL17H248-15-4A
GT2	timing belt, GT2, 6 mm width, bulk (10 meter lengths, not endless)	Amazon
GT2	timing belt, GT2, 6 mm width, 200 mm endless	Amazon
GT2 16T	timing belt pulley, GT2, 16 teeth, 6 mm tooth width, 5 mm bore (fits stepper motors)	Amazon
GT2 20T	timing belt pulley, GT2, 20 teeth, 6 mm tooth width, 8 mm bore (fits shafting)	Amazon