T - NUTS

Table 16: American National Standard T-Nuts *ANSI/ASME B5.1M-1985, R 199*2

Nominal T-Bolt Size	Width of Tongue A ₃	Tap for Stud E ₃	Width of Nut B ₃	Height of Nut C ₃	Total Thickness Including Tongue ^[a] K ₃	Length of Nut ^[a] L ₃	Rounding of Corners
R ₃	W ₃
inch	mm	inch	mm	inch	mm	inch	mm	inch max	mm max	inch max	mm max
inch	mm	max	min	max	min	UNC-3B	ISO ^[b]	max	min	max	min	max	min	max	min	inch	mm	inch	mm
	4
	5
0.250	6
0.312	8	0.330	0.320	8.7	8.5	0.250-20	M6	0.562	0.531	15	14	0.188	0.172	6	5.6	0.281	9	0.562	18	0.02	0.5	0.03	0.8
0.375	10	0.418	0.408	11	10.75	0.312-18	M8	0.688	0.656	18	17	0.250	0.234	7	6.6	0.375	10.5	0.688	20	0.02	0.5	0.03	0.8
0.500	12	0.543	0.533	13.5	13.25	0.375-1	6M10	0.875	0.844	22	21	0.312	0.297	8	1.6	0.531	12	0.875	23	0.02	0.5	0.06	1.5
0.625	16	0.668	0.658	17.25	17	0.500-13	M12	1.125	1.094	28	27