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- Width of tongue used with the T-Slots will be found in the complete standard, B5.1M. Throat dimensions are basic. When slots are intended to be used for holding only, tolerances can be 0.0 + 0.010 inch or H12 Metric (ISO/R286); when intended for location, tolerance can be 0.0 + 0.001 inch or H8 Metric.
- BASIC DIA: A Head Diameter: J Slot Width: T Slot Depth; NO.0000: 0.043: 0.008: 0.007; NO.000: 0.064: 0.011: 0.009; NO.00: 0.093: 0.017: 0.014; NO.0: 0.119: 0.023: 0.
- T-BOLTS, SLOTS, NUTS, AND TONGUES 1646 Table 2. American National Standard T-Bolts ANSI/ASME B5.1M-1985 (R1998) T-BOLTS Nominal T-Bolt Size and Thread A 2 ab a For inch tolerances for thread dia meters of bolts or studs a nd for threads see page 1716.
- TSLOTS Aluminum Extrusion Manufacturer by Bonnell Aluminum.
You may want to verify the slot size. Unless someone recut them they should be a common size (1/2', 9/16' or 5/8'). Take flat file and run it down both sides of the slots to remove any burrs or mushrooming.
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
Standard T Slot Dimensions
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
3/8 7/16
Standard T Slot Sizes Guide
Standard T Slot Sizes Actual
1/2 9/16
5/8 11/16