Standard nuts (GOST 5915-70)

Parameter	Thread diameter d, mm
Thread pitch, mm	1.0	1.25	1.5	1.75	2.0	2.5	3.0	3.5	4.0
Diameter D, mm near		14.5				33.5	40.5	51.5
Span S, mm
Height H, mm		6.5

Table 12.11

Standard spring washers (GOST 6402-70)

Parameter	Thread diameter d, mm
Diameter d 0, mm	6.1	8.2	10.2	12.2	16.3	20.5	24.5	30.5	36.5
Thickness s, mm	1.4	2.0	2.5	3.0	3.5	4.5	5.5	6.5	8.0

Table 12.12

Bolt and screw length, mm

d	L / l 0	d	L / l 0

Bolt length should be chosen from the following standard series, mm:

8, 10, 12, 14, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 190, 200, 220, 240, 260, 300.

Table 12.13

Dimensions of bolt joints

Parameter	Thread diameter d, mm
a, not less	1.25·d
a1, not less	3.5		4.5	5.5
a2, not less		2.5		3.5
a3, not less
a4	1.5…	1.5	2…	2…	2.5…	2.5…	3…
c		1.6	1.6	1.6		2.5	2.5
D1
D2

Table 12.14

Lifting eye-bolts, mm

d	d1	d2	h	h1	l	f	c	x
M8							1.2	2.5
M10						1.5
M12						1.8.	3.5
M16

Table 12.15

Inspection hole cover

A mm	B mm	A1 mm	B1 mm	C mm	C1 mm	K mm	R mm	Dimensions of screw	Number of screws
					-			M8x22
					-			M8x22
								M10x22

Table 12.16

Air vent, mm

D	d1	d2	D	h	l	a	H1	H2	a1
M12x1.75						5.5
M16x2

Table 12.17

Air vent, mm

D	D	l	l1	d1	a	s
M12x1.25
M16x1.5
M20x1.5

Table 12.18