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Dimension Table for T-Slots, Bolts, and Nuts Table Chart

Engineering Hardware Standards

Dimension Table for T-Slots, Bolts, and Nuts per. American National Standard T-Slots ANSI/ASME B5.1M-1985.

1. Width of tongue used with the T-Slots will be found in the complete standard, B5.1M.

2. 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.

3. Corners of T-Slots may be square or may be rounded or broken to the indicated maximum dimensions at the manufacturer's option.

Basic Dimensional Design

Suggested Dimensional Design

T-Slots, Bolts, and Nuts per. American National Standard T-Slots ANSI/ASME B5.1M-1985

Nominal T-Bolt Size See Note 1		Width of Throat A1 See Note 2		Width of Headspace B2				Depth of Headspace C1
				inch		mm		inch		mm
inch	mm	inch	mm	min	max	min	max	min	max	min	max
-	4	-	5	-	-	10	11	-	-	3	3.5
-	5	-	6	-	-	11	12.5	-	-	5	6
0.250	6	0.282	8	0.500	0.562	14.5	16	0.203	0.234	7	8
0.312	8	0.344	10	0.594	0.656	16	18	0.234	0.266	7	8
0.375	10	0.438	12	0.719	0.781	19	21	0.297	0.328	8	9
0.500	12	0.562	14	0.906	0.969	23	25	0.359	0.391	9	11
0.625	16	0.688	18	1.188	1.250	30	32	0.453	0.484	12	14
0.750	20	0.812	22	1.375	1.469	37	40	0.594	0.625	16	18
1.000	24	1.062	28	1.750	1.844	46	50	0.781	0.828	20	22
1.250	30	1.312	36	2.125	2.219	56	60	1.031	1.094	25	28
1.500	36	1.562	42	2.562	2.656	68	72	1.281	1.344	32	35
-	42	-	48	-	-	80	85	-	-	36	40
-	48	-	54	-	-	90	95	-	-	40	44

 

Nominal T-Bolt Size See Note 1		Depth of Throat D1					Round or Breakoken Corners See Note 3
		inch		mm			inch			mm
inch	mm	min	max	min	max		R1 max	W1 max	U1 max	R1 max	W1 max	U1 x
-	4	-	-	4.5	7		-	-	-	0.5	0.8	0.8
-	5	-	-	5	8		-	-	-	0.5	0.8	0.8
0.250	6	0.125	0.375	7	11		0.02	0.02	0.03	0.5	0.8	0.8
0.312	8	0.156	0.438	9	14		0.02	0.03	0.03	0.5	0.8	0.8
0.375	10	0.219	0.562	11	17		0.02	0.03	0.03	0.5	0.8	0.8
0.500	12	0.312	0.688	12	19		0.02	0.03	0.03	0.5	0.8	0.8
0.625	16	0.438	0.875	16	24		0.03	0.03	0.05	0.8	0.8	1.3
0.750	20	0.562	1.062	20	29		0.03	0.03	0.05	0.8	0.8	1.3
1.000	24	0.750	1.250	26	36		0.03	0.06	0.05	0.8	1.5	1.3
1.250	30	1.000	1.562	33	46		0.03	0.06	0.05	0.8	1.5	1.3
1.500	36	1.250	1.938	39	53		0.03	0.06	0.05	0.8	1.5	1.3
-	42	-	-	44	59		-	-	-	1.5	2.5	2
-	48	-	-	50	66		-	-	-	1.5	2.5	2

Related

• Standard T-Nuts per ASME B5.1M table of dimensions and tolerances
• BS 2485 T-Bolts T-Nuts Dimensions
• Standard T-Bolts Dimensions Table Chart
• Dimension Table for T-Slots, Bolts, and Nuts Table Chart