GB /T 8 - 2021 Square Head Bolts - Product Grade C

Unit: 毫米(mm)

Thread Size
d

M10

M12

(M14)

P	Pitch
e	min
k	Nominal Size
	max
	min
k₁	min
r	min
s	max
s	min
x	max

1.50	1.75	2.0
20.24	22.84	26.21
7	8	9
7.45	8.45	9.45
6.55	7.55	8.55
5.21	5.91	6.61
0.4	0.6	0.6
16	18	21
15.57	17.57	20.16
3.8	4.2	5

per 1000 units ≈ kg(7.85kg/cm3)

Thread Length
b

①,The diameter of the unthreaded part is approximately equal to the pitch diameter.

GB /T 35 - 2013

Square Head Bolts With Small Head

GB /T 35 - 1988

Small square head bolts

GB 8 - 1988

Square Head Bolts - Product Grade C
Suppliers(1)

GB 8 - 1976

Square Head Bolts - Product Grade C
Suppliers(1)

DIN 21346 - 1989

Square Head Bolts For Shaft Guides

JIS E 1107 - 2008

Fish Plate Bolt Square Head

JIS B 1182 (T1-1) - 1995

Thin Square Head Bolts [Table 1-1]

JIS B 1182 (T1-2) - 1995

Square Head Bolts [Table 1-2]

JIS B 1182 (T1-3) - 1995

Square Head Bolts [Table 1-3]

JIS B 1182 (T2) - 1995

Large Square Head Bolts [Table 2]

Q 194B

Small square head bolts

ASME/ANSI B 18.2.1 - 1996

Square Bolts
Suppliers(2)

UNI 5729 - 1965

Large square head bolts and bolts with square nut - metric coarse thread - Finish C

BS 916 - 1953

Spuare Head Screws with B.S.Threads [Table 1]

BS 916 - 1953

Square Head Screws faced under head with B.S.Threads - Black [Table 2]

BS 916 - 1953

Square bolts faced under head, and faced under head and turned on shank with B.S.Threads - Black [Table 2]

BS 916 - 1953

Square Head Bolt with B.S.Threads [Table 1]

CNS 4699 - 1982

Square Head Bolts For Wooden Guide Plates

CNS 3134 - 1981

Square Head Bolts (Finished)

CNS 3135 - 1981

Square Head Bolts (Semi-Finished)

CNS 3136 - 1981

Square Head Bolts (Regular)

CNS 3137 - 1981

Large Square Head Bolts (Regular)

GOST 21249 (-1) - 1996

Blunt Bolts for General Purpose - Basic Parameters and Dimensions

GOST 21249 (-2) - 1996

Blunt Bolts for General Purpose - Basic Parameters and Dimensions

ASME B 18.2.1 - 2012

Askew Head Bolts [Table 4] (ASTM A307 / A354 / A394)

ASME B 18.2.1 - 2012

Square Head Bolts [Table 1] (ASTM A307 / A354 / A394)
Suppliers(2)

ASME B 18.2.1 - 2010

Square Head Bolts
Suppliers(2)

ASME B 18.2.1 - 2010

Askew Head Bolts

ASME B 18.2.3.10M - 1996

Metric Square Head Bolts

Wenzhou Fengding Fastener Manufacture Co., Ltd.
Contact:	Mr.Huang
Cellphone：	+86-18857755588 13676725866
email：	wzfdjgj@163.com
Material: carbon steel，copper，Stainless steel;Surface treatment: according to customers' requirements; Grade: 4.8, 8.8, 10.9, 12.9; Nominal diameter: M3-M20; Nominal length: 5-300mm