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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Hexagon Lobular Socket Head Cap Screws-Property Class 8.8

GB 6191 - 1986

Display drawing:

国标GB 6191 - 1986 GB6191 6191GB Hexagon Lobular Socket Head Cap Screws-Property Class 8.8
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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.
Thread Size
d
M6 M8 M10 M12 (M14) M16 M20
P Pitch
dk max
min
ds max
min
k max
min
Socket No.
t max
min
B max
r min
1 1.25 1.5 1.75 2 2 2.5
10 13 16 18 21 24 30
9.78 12.73 15.73 17.73 20.67 23.67 29.67
6 8 10 12 14 16 20
5.82 7.78 9.78 11.73 13.73 15.73 19.67
3.9 5 6 7 9 11 13
3.6 4.7 5.7 6.64 8.64 10.57 12.57
T30 T40 T50 T55 T55 T60 T80
2 2.6 3 3.8 4 4.5 7
1.6 2.2 2.6 3.32 3.52 4.02 6.42
4.15 5 6.62 8.2 8.2 9.8 13
0.25 0.4 0.4 0.6 0.6 0.6 0.8
Weight of per 1000 steel products(≈kg)
- - - - - - -
Length of Thread b min
- - - - - - -

Alternative history

GB 6191 - 1986 GB /T 2671.2 - 2004 GB /T 2671.2 - 2017
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Similar Standards

1 Hexalobular Socket Head Cap Screws [ISO]
ISO 14579 - 2011 		Hexalobular Socket Head Cap Screws

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2 Cheese Head Screws with Hexalobular Slot [ISO]
ISO 14579 - 2001 		Cheese Head Screws with Hexalobular Slot

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3 Hexalobular Socket Raised Cheese Head Screws [YJT]
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4 Hexalobular Socket Head Cap Screws [DIN]
DIN 6929 (OE) - 2013 		Hexalobular Socket Head Cap Screws
5 Hexalobular Socket Cheese Head Screws [ISO]
ISO 14580 - 2011 		Hexalobular Socket Cheese Head Screws
6 Fillister Head Screws with Hexalobular Slot [TABLE 2.2.6-2 VI] [ASME]
ASME B 18.6.3 (H6B-VI) - 2024 		Fillister Head Screws with Hexalobular Slot [TABLE 2.2.6-2 VI]
7 Hexalobular Socket Head Cap Screw with Large Driving Feature [DIN]
DIN 34802 - 2001 		Hexalobular Socket Head Cap Screw with Large Driving Feature
8 Hexalobular Socket Head Cap Screws [DIN EN ISO]
DIN EN ISO 14579 - 2011 		Hexalobular Socket Head Cap Screws
9 Hexalobular Socket Cheese Head Screws [ISO]
ISO 14580 - 2001 		Hexalobular Socket Cheese Head Screws
10 Hexalobular Socket Head Cap Screws [ASME/ANSI]
ASME/ANSI B 18.3 (Table 1-III) - 2012 		Hexalobular Socket Head Cap Screws
11 Aerospace Series Screws, Pan Head, Six Lobe Recess, Coarse Tolerance Normal Shank, Medium Length Thread, in Titanium Alloy, Anodized [DIN EN]
DIN EN 4178 - 2017 		Aerospace Series Screws, Pan Head, Six Lobe Recess, Coarse Tolerance Normal Shank, Medium Length Thread, in Titanium Alloy, Anodized
12 Hexalobular Socket Cheese Head Screws [DIN EN ISO]
DIN EN ISO 14580 - 2002 		Hexalobular Socket Cheese Head Screws
13 Low Head Hexagon Socket Cap Screws [ASME]
ASME B 18.3 (Table 12-III) - 2012 		Low Head Hexagon Socket Cap Screws
14 Cheese Head Screws with Hexalobular Slot [ASME]
ASME B 18.6.3 (T22-VI) - 2013 		Cheese Head Screws with Hexalobular Slot
15 Hexalobular Socket Cheese Head Screws [JIS]
JIS B 1136 - 2014 		Hexalobular Socket Cheese Head Screws
16 Spline Socket Head Cap Screws [GB]
GB 824 - 1976 		Spline Socket Head Cap Screws
17 Hexalobular Socket Cheese Head Screws [NF]
NF E 25-111 - 1983 		Hexalobular Socket Cheese Head Screws
18 Hexalobular Socket Head Cap Screws [GB]
GB /T 2671.2 - 2017 		Hexalobular Socket Head Cap Screws
19 Hexalobular Socket Head Cap Screws [NF]
NF E 25-110 - 2001 		Hexalobular Socket Head Cap Screws
20 Hexalobular Socket Cheese (Short) Head Screws [GB]
GB /T 2671.1 - 2017 		Hexalobular Socket Cheese (Short) Head Screws
21 Hexagon Lobular Socket Head Cap Screws-Property Class 4.8 [GB]
GB 6190 - 1986 		Hexagon Lobular Socket Head Cap Screws-Property Class 4.8
22 Hexalobular Socket Cheese Head Screws [NF]
NF E 25-111 - 2001 		Hexalobular Socket Cheese Head Screws
23 Hexalobular Socket Cheese (short) Head Screws [GB]
GB /T 2671.1 - 2004 		Hexalobular Socket Cheese (short) Head Screws
24 Hexalobular Socket Cheese Head Screws [JIS]
JIS B 1107 - 2018 		Hexalobular Socket Cheese Head Screws
25 Hexalobular Socket Cheese Head Screws [JIS]
JIS B 1136 - 2004 		Hexalobular Socket Cheese Head Screws
26 Hexalobular Socket Head Cap Screws [GB]
GB /T 2671.2 - 2004 		Hexalobular Socket Head Cap Screws
27 Hexalobular Socket Cheese Head Screws [JIS]
JIS B 1107 - 2004 		Hexalobular Socket Cheese Head Screws
28 Hexalobular Socket Flat Head Screws [YJT]
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