IS 7790

Dimensions

Thread size (d)	Series 1	M4	M5	M6	M8	M10	M12	M16	M20	M24
	Series 2	-	-	-	M8 x 1	M10 x 1	M12 x 1.5	M16 x 1.5	M20 x 2	M24 x 2
	Series 3	-	-	-	-	M10 x 1.25	M12 x 1.25	-	M20 x 1.5	-
P1)		0.7	0.8	1	1.25	1.5	1.75	2	2.5	3
da	min	4	5	6	8	10	12	16	20	24
	max	4.6	5.75	6.75	8.75	10.8	13	17.3	21.6	25.9
dk	max	6.5	7.5	9.5	12.5	15	17	23	28	34
dw	min	5.8	6.8	8.3	11.3	14.3	16.2	22.2	28.2	33.2
e	min	7.66	8.79	11.05	14.38	17.77	20.3	26.75	33.53	39.98
e22 max	Series 1	1.4	1.6	2	2.5	3	-	-	-	-
	Series 2	-	-	-	2	2	-	-	-	-
	Series 3	-	-	-	-	2.5	-	-	-	-
f22 max	Series 1	-	-	-	-	-	6.4	7.3	9.3	10.7
	Series 2	-	-	-	-	-	5.6	5.5	7.3	7.3
	Series 3	-	-	-	-	-	4.9	-	5.6	-
h	max=nom	8	10	12	15	18	22	28	34	42
	min	7.64	9.64	11.57	14.57	17.57	21.48	27.48	33.38	41.38
m	max	3.2	4	5	6.5	8	10	13	16	19
	min	2.9	3.7	4.7	6.14	7.64	9.64	12.3	14.9	17.7
m'	min	2.32	2.96	3.76	4.91	6.11	7.71	9.84	11.92	14.16
r		3.25	3.75	4.75	6.25	7.5	8.5	11.5	14	17
≈	max=nom	7	8	10	13	16	18	24	30	36
	min	6.78	7.78	9.78	12.73	15.73	17.73	23.67	29.67	35.38
t	min	5.26	7.21	7.71	10.65	12.65	15.65	20.58	25.58	30.5
	max	5.74	7.79	8.29	11.35	13.35	16.35	21.42	26.42	31.5
w	min	2	2	2	2	2	3	4	5	6

1) P = Coarse pitch as per IS 4218 for Series1 .

2) For sizes < M10 Thread underout or thread runout e² max= 2P.

3) For size > M10 Thread underout not to exceed f² max(short) as per IS 1369 : 1982.

All data for information purpose only. For more details on product standards or dimensions, please feel free to contact us at centuryboltcentre@gmail.com