Standard T Slot Sizes
- Bolt Size (d) T-Slot Size (a) L: Part. E: k: b: a1: Bolt Size (d) T-Slot Size (a) L: Part. E: k: b: a1: M06: 6: 25: 787-0606-025: 10: 4: 15: 5,7: M18: 20.
- IS 2013: T-Slots- Dimensions and Spacings by Bureau of Indian Standards. Publication date 1995 Usage CC0 1.0 Universal Topics data.gov.in, standardsbis.in, public.
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80/20 provides T-slot aluminum profiles, or bars, that have channels used to connect other bars and parts — for instance, panels, linear bearings or casters. It is a building system anyone can use to create custom solutions. 80/20 UNIVERSITY One of the many benefits you'll find with 80/20 profiles and parts is its versatility.
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Standards for T-slots
T-slots come in standard sizes. Needless to say things designed to fit in the T-slots are designed to fit these standard sizes. Similarly, the cutters designed for cutting T-slot are designed to cut standard size T-slots.
fig outline of a T-slot
The key characteristic of a T-slot is its width. Of course this can be metric or imperial
Metric T-slots (all in millimeters)
A b B+ C C+ Hmin Hmax
6 11 +1.5 5 +1 13 11
8 14.5 +1.5 7 +1 18 15
10 16 +2 7 +1 21 17
12 19 +2 8 +1 25 20
Imperial T-slots (All in inches)
diam of bolt width of slot depth of throatmax
A
1/4 9/32 3/8 1/8 9/16 1/2 15/64 13/64
5/16 11/32 7/16 5/32 21/32 19/32
Standard T Slot Dimensions
3/8 7/16
Standard T Slot Sizes Comparison
1/2 9/16
Standard T Slot Sizes Guide
5/8 11/16