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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Hexagon lobular socket countersunk head screws

GB 2673 - 1986

Display drawing:

国标GB 2673 - 1986 GB2673 2673GB Hexagon lobular socket countersunk head screws
Download CAD Model*

 *Models with different eras.

Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
×

Choose materials based on density.(g/cm3)

  • Carbon Steel 7.85
  • Stainless Steel 8.1
  • Stainless Steel 7.95
  • Stainless Steel 7.7
  • Titanium Alloy 4.5
  • Aluminum Alloy 2.8
  • Copper 8.89


Select here or enter material density on the calculation page.
Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.
Screw Thread
d
M6 M8 M10 M12 (M14) M16 M20
P Pitch
a max
dk Theoretical max
Actual max
min
k max
r max
Socket No.
t max
min
B max
x max
1 1.25 1.5 1.75 2 2 2.5
2 2.5 3 3.5 4 4 5
12.6 17.3 20 24 28 32 40
11.3 15.8 18.3 22 25.5 29 36
10.9 15.4 17.8 21.5 25 28.5 35.4
3.3 4.65 5 6 7 8 10
1.5 2 2.5 2.5 2.5 3 3
T30 T40 T50 T55 T55 T60 T80
1.8 2.5 2.7 3.5 3.7 4.1 6
1.4 2.1 2.3 3.02 3.22 3.62 5.42
4.15 5 6.62 8.2 8.2 9.8 13
2.5 3.2 3.8 4.3 5 5 6.3
Weight of per 1000 steel products(≈kg)
- - - - - - -
Length of Thread b min
- - - - - - -

Alternative history

GB 2673 - 1986 GB /T 2673 - 2007 GB /T 2673.1 - 2018

Suppliers

Best price if from GlobalFastener.com.
Jiangsu BofanKe Precision Metal Technology Co., Ltd.

  • Director Tang

  • +86-15298892886/15262400870

  • +86-516-86839568

  • Material: stainless steel, carbon steel; Nominal diameter: M1-M14; Nominal length: 5-400mm
Contact us via Email

Similar Standards

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4 Hexalobular Socket Countersunk Head Screws, High Head [ISO]
ISO 14582 - 2013 		Hexalobular Socket Countersunk Head Screws, High Head
5 82° Hexalobular Socket Countersunk Flat Head Screws [ASME]
ASME B 18.6.3 (T2-VI) - 2013 		82° Hexalobular Socket Countersunk Flat Head Screws
6 Screws With Six Lobes Recessed Countersunk Head - Symbol FX [NF]
NF E 25-107 - 2007 		Screws With Six Lobes Recessed Countersunk Head - Symbol FX
7 Hexalobular Socket High Countersunk Head Screws [GB]
GB /T 2673.2 - 2020 		Hexalobular Socket High Countersunk Head Screws
8 Hexagon Socket Flat Countersunk Head Cap [ASTM]
ASTM 18.3 (Table 8-III) - 2012 		Hexagon Socket Flat Countersunk Head Cap