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Unit:mm

Cross recessed countersunk head thread forming screws

GB /T 6561 - 1986

Display drawing:

国标GB /T6561 - 1986 GB6561 6561GB Cross recessed countersunk head thread forming screws
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 .
Screw Thread
d
M2.5 M3 M4 M5 M6
P Pitch
a max
b min
dk max
min
k max
Socket No.
m Ref.
Penetration depth min
max
x max
0.45 0.5 0.7 0.8 1
0.9 1 1.4 1.6 2
12 18 24 30 35
4.7 5.5 8.4 9.3 11.3
4.4 5.2 8 8.9 10.9
1.5 1.65 2.7 2.7 3.3
1 1 2 2 3
2.9 3.2 4.6 5.2 6.8
1.4 1.7 2.1 2.7 3
1.8 2.1 2.6 3.2 3.5
1.1 1.25 1.75 2 2.5
Weight of per 1000 steel products(≈kg)
- - - - -

Alternative history

GB /T 6561 - 1986 GB /T 6561 - 2014
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Similar Standards

1 Cross Recessed Countersunk Head Thread Rolling Screws [DIN]
DIN 7500 (ME) - 2000 		Cross Recessed Countersunk Head Thread Rolling Screws

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2 Cross Recessed Countersunk Head Thread Rolling Screws [DIN]
DIN 7500 (ME) - 1995 		Cross Recessed Countersunk Head Thread Rolling Screws

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3 Cross Recessed Countersunk Head Thread Rolling Screws [DIN]
DIN 7500 (M) - 1984 		Cross Recessed Countersunk Head Thread Rolling Screws

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4 Cross Recessed Countersunk Head Thread Rolling Screws [GB]
GB /T 6561 - 2014 		Cross Recessed Countersunk Head Thread Rolling Screws
5 Cross Recessed Countersunk Head Forming Screws [UNI]
UNI 8113 		Cross Recessed Countersunk Head Forming Screws
6 Self-tapping countersunk screws for metals and plastics [GOST]
GOST 10619 - 1980 		Self-tapping countersunk screws for metals and plastics