High strength friction grip bolts and nuts

Here is some useful information relating to High Strength Friction Grip Bolts.

Table 1.1

Approximate Masses of Ordinary Bolts, Nuts and Washers

	Mass per 100 bolts excluding nuts (kg)
Nominal Length (mm)	M12	M16	M20	M24	M30
30	4.0
35	4.6
40	5.0	9.5	15.9
45	5.4	10.4	17.6
50	5.9	11.1	18.5	27.6	49.2*
55	6.4	11.5	19.7	29.7	51.9*
60	6.8	12.7	21.0	31.5	54.7
65	7.1	13.4	22.3	33.4	57.4
70	7.6	13.7	23.4	35.2	60.2*
80	8.5	15.9	25.8	38.7	65.7
90	9.4	17.4	28.2	41.5	71.2
100	10.0	18.8	30.6	45.1	76.7
110	11.1	20.5	33.1	48.6	82.3
120	12.0	22.3	35.6	52.3	88.0
130	12.7	23.8	38.0	55.8	88.0
140	13.6	25.4	40.6	59.3	97.5
150	14.5	26.9	43.1	63.0	103
160	15.3	27.8	44.7	66.5	109
180	17.1	31.0	49.5	73.5	120
200		34.2	54.5	80.5	131
Mass per 100 nuts (kg)
DIN 934	1.51	3.00	5.90	10.1	20.9
ISO 4032	1.59	3.42	6.67	11.4	22.3
Mass per 100 round flat washers (kg)
DIN 126	0.59	1.06	1.64	3.11	5.05

Table 1.2

Basic Dimensions of HSFG Bolts

	s		k		ds		e
d	Min	Max	Min	Nom	Max	Min	Min
M16	26.2	27.0	9.25	10.0	16.7	15.3	29.56
M20	33.0	34.0	11.60	13.0	20.0	19.67	37.29
M24	40.0	41.0	14.10	15.0	24.0	23.67	45.20
M30	49.0	50.0	17.65	19.0	30.8	29.16	55.37

Table 1.3

Basic Dimensions of Nuts for HSFG Bolts 

	p	s		e	m
d	pitch	Max	Min	Min	Max	Min
M16	2.0	27.0	26.2	29.56	17.1	19.4
M20	2.5	34.0	33.0	37.29	20.7	19.4
M24	3.0	41.0	40.0	45.20	24.2	22.9
M30	3.5	50.0	49.0	55.37	30.7	29.5

Table 1.4

Basic Dimensions of Washers for HSFG Bolts

	d1		d2		c
d	Max	Min	Max	Min	Max	Min
M16	17.43	17	33	31.4	1.6	1.2
M20	21.52	21	40	38.4	2.0	1.6
M24	25.52	25	47	45.4	2.0	1.6
M30	31.62	31	56	54.1	2.4	2.0