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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Cross Recessed Countersunk Flat Head Screws (Common Head Style) - Grade A - Part 2: Steel of Property Class 8.8, Stainless and Non-Ferrous Metals

GB /T 819.2 - 1997

Display drawing:

国标GB /T819.2 - 1997 GB819.2 819.2GB Cross Recessed Countersunk Flat Head Screws (Common Head Style) - Grade A - Part 2: Steel of Property Class 8.8, Stainless and Non-Ferrous Metals
Download CAD Model*
国标GB /T819.2 - 1997 GB819.2 819.2GB Cross Recessed Countersunk Flat Head Screws (Common Head Style) - Grade A - Part 2: Steel of Property Class 8.8, Stainless and Non-Ferrous Metals
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 .
Screw Thread
d
M2 M2.5 M3 (M3.5) M4 M5 M6 M8 M10
P Pitch
b min
dk theor. max
Actual max
min
k max
x max
Socket No.
M1 series 1 type H
M2 series 1 type Z
M1 series 2 type H
M2 series 2 type Z
Penetration depth series 1 / type H min
max
series 1 / type Z min
max
series 2 / type H min
max
series 2 / type Z min
max
0.4 0.45 0.5 0.6 0.7 0.8 1 1.25 1.5
25 25 25 38 38 38 38 38 38
4.4 5.5 6.3 8.2 9.4 10.4 12.6 17.3 20
3.8 4.7 5.5 7.30 8.40 9.30 11.30 15.80 18.30
3.5 4.4 5.2 6.9 8.0 8.9 10.9 15.4 17.8
1.2 1.5 1.65 2.35 2.7 2.7 3.3 4.65 5
1 1.1 1.25 1.5 1.75 2 2.5 3.2 3.8
0 1 1 2 2 2 3 4 4
1.9 2.9 3.2 4.4 4.6 5.2 6.8 8.9 10
1.9 2.8 3 4.1 4.4 4.9 6.6 8.8 9.8
1.9 2.7 2.9 4.1 4.6 4.8 6.6 8.7 9.6
1.9 2.5 2.8 4 4.4 4.6 6.3 8.5 9.4
0.9 1.4 1.7 1.9 2.1 2.7 3.0 4.0 5.1
1.2 1.8 2.1 2.4 2.6 3.2 3.5 4.6 5.7
0.95 1.48 1.76 1.75 2.06 2.6 3 4.15 5.19
1.2 1.73 2.01 2.2 2.51 3.05 3.45 4.6 5.64
0.9 1.25 1.4 1.6 2.1 2.3 2.8 3.9 4.8
1.2 1.55 1.8 2.1 2.6 2.8 3.3 4.4 5.3
0.95 1.22 1.48 1.61 2.06 2.27 2.73 3.87 4.78
1.2 1.47 1.73 2.05 2.51 2.72 3.18 4.32 5.23
Weight of per 1000 steel products(≈kg)
- - - - - - - - -
①,The diameter of the unthreaded portion is approximately equal to the diameter of the pitch or allowed to equal the major diameter of the thread.
③,amax=2P

Alternative history

GB /T 819.2 - 1997 GB /T 819.2 - 2016
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