TB /T 1479 - 1991 - 易紧通

Unit: 毫米(mm)

Thread Size
d

M20

M22

L	(js17)	Nominal Size
	max
	min
b	max
	min
d_s2	(h14)	max=nominal size
	min
d_s1	≈
d₁
d_w	min
k	(js15)	Nominal Size
	max
	min
h	(js15)	Nominal Size
	max
	min
e	min
s	(h13)	max=nominal size
	min
r	max
	min
R	max
	min
y
per 1000 units≈kg

55	55	70
56.5	56.5	71.5
53.5	53.5	68.5
50	50	55
45	45	50
20	22	22
19.48	21.48	21.48
18.38	20.38	20.38
3.5	4	4
27.7	29.2	29.2
13	14	14
13.35	14.35	14.35
12.65	13.65	13.65
8	8.5	8.5
8.29	8.79	8.79
7.71	8.21	8.21
33.6	35.7	35.7
30	32	32
29.67	31.71	31.71
1.8	1.8	1.8
1	1	1
1.5	1.5	1.5
0.8	0.8	0.8
2.5	2.5	2.5
180	235	273

GB /T 32.1 - 2020

Hexagon Bolts With Wire Holes On Head

GB /T 32.3 - 2020

Hexagon Bolts With Wire Holes On Head - Fine Pitch Thread

GB 32.1 - 1988

Hexagon Bolts With Wire Hole On Head-Product Grade A and B

GB 32.2 - 1988

Hexagon Bolts With Wire Holes On Head - Reduced Shank - Product Grade B

GB 32.3 - 1988

Hexagon Bolts With Wire Holes On Head-fine Pitch Thread-product Grade A And B

GB 25 - 1976

Bolts, Small Hexagon Head With Holes Through The Head

GB 26 - 1976

Bolts, Small Hexagon Head With Fit Neck And Holes Through The Head

Q 170

Hexagon bolts with wire holes on head

Q 170B

Hexagon bolts with wire hole on head

Q 171

Hexagon bolts with wire holes on head

Q 171B

Hexagon bolts with wire hole on head

Q 171C

Hexagon bolts with wire hole on head

EN 2887 - 1995

Aerospace series - Bolts, normal hexagonal head, threaded to head, in corrosion resisting steel, passivated - Classification: 600 MPa (at ambient temperature)/425 °C

GOST 7796 (-3) - 1970

Hexagon Reduced Head Bolts Product Grade B, Type 3

GOST 7798 - 1970

Hexagon bolts with wire holes on head

GOST 7805 (-3) - 1970

Hexagon Bolts With Wire Holes On Head, product grade A, Type 3

NAS NAM 51474 (DS 51474) - 2011

Screw, cap, hex head, fully threaded, metric

QJ 2365 - 1992

Hexagon head bolts with hole

WJ 2215 - 1994

Hexagon Bolts With Wire Holes On Head - Full Thread