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T-Slots and T-Nuts - Metric Sizes

Standard metric T-slots and T-nuts.

Standard Metric T-Slots

Size	s1 (mm)	t1 (mm)	a1 (mm)	h1 (mm)
M4	5	10 - 11	3.5 - 4.5	8 - 10
M5	6	11 - 12.5	5 - 6	11 - 13
M6	8	14.5 - 16	7 - 8	15 - 18
M8	10	16 - 18	7 - 8	17 - 21
M10	12	19 - 21	8 -9	20 - 25
M12	14	23 - 25	9 - 11	23 - 28
M16	18	30 - 32	12 - 14	30 - 36

1 inch = 25.4 mm

Standard Metric T-Nuts

Size	s2 (mm)	t2 (mm)	a2 (mm)	h2 (mm)
M4	5	9	2.5	6
M5	6	10	4	8
M6	8	13	6	10
M8	10	15	6	12
M10	12	18	7	16
M12	14	22	8	19
M16	18	28	10	25

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Engineering ToolBox, (2018). T-Slots and T-Nuts - Metric Sizes . [online] Available at: https://www.engineeringtoolbox.com/t-slut-t-nut-size-metric-d_2072.html [Accessed Day Mo. Year].

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