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(Non-preferred) dimensions in parentheses.

Countersunk Flat Head Screws With Cross Recess—Part 1: Property Class 4.8

GB /T 819.1 - 2016

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国标GB /T819.1 - 2016 GB819.1 819.1GB Countersunk Flat Head Screws With Cross Recess—Part 1: Property Class 4.8
国标GB /T819.1 - 2016 GB819.1 819.1GB Countersunk Flat Head Screws With Cross Recess—Part 1: Property Class 4.8
Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.
Screw Thread
d
M1.6 M2 M2.5 M3 (M3.5) M4 M5 M6 M8 M10
P Pitch
a max
dk theor. max
Actual max=nominal size
min
k max=nominal size
r max
x max
Socket No.
M1 Ref.
M2 Ref.
Penetration depth Type H max
min
Type Z max
min
0.35 0.4 0.45 0.5 0.6 0.7 0.8 1 1.25 1.5
0.7 0.8 0.9 1 1.2 1.4 1.6 2 2.5 3
3.6 4.4 5.5 6.3 8.2 9.4 10.4 12.6 17.3 20
3.0 3.8 4.7 5.5 7.30 8.40 9.30 11.30 15.80 18.30
2.7 3.5 4.4 5.2 6.94 8.04 8.94 10.87 15.37 17.78
1 1.2 1.5 1.65 2.35 2.7 2.7 3.3 4.65 5
0.4 0.5 0.6 0.8 0.9 1 1.3 1.5 2 2.5
0.9 1 1.1 1.25 1.5 1.75 2 2.5 3.2 3.8
0 0 1 1 2 2 2 3 4 4
1.6 1.9 2.9 3.2 4.4 4.6 5.2 6.8 8.9 10
1.6 1.9 2.8 3 4.1 4.4 4.9 6.6 8.8 9.8
0.9 1.2 1.8 2.1 2.4 2.6 3.2 3.5 4.6 5.7
0.6 0.9 1.4 1.7 1.9 2.1 2.7 3.0 4.0 5.1
0.95 1.2 1.73 2.01 2.2 2.51 3.05 3.45 4.6 5.64
0.7 0.95 1.48 1.76 1.75 2.06 2.6 3 4.15 5.19
Weight of per 1000 steel products(≈kg)
- - - - - - - - - -
Length of Thread b min
- - - - - - - - - -
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.

Suppliers

Best price if from GlobalFastener.com.
Suzhou Yongchuang Fastener Factory
  • Mr. Tang

  • +86-15298892886

  • +86-512-66700967

  • Material: stainless steel, carbon steel; Nominal diameter: M1-M14; Nominal length: 5-400mm
Shanghai Chengtai Hardware Manufacturing Co., Ltd.
  • Mr.Zhuge

  • +86-18916049888

  • +86-21-59742477/59740118

  • Material: stainless steel; Specification: complete; Surface treatment: according to customer requirement
GotopScrews International Co., Limited
  • Manager Zhuang

  • +86-13008864675

  • +86-755-89505088

  • Material: carbon steel, alloy steel, stainless steel, copper, aluminum, titanium; Specifications: M0.6~M6; Length: 1~60mm; Surface Treatment: galvanizing, nickel plating, zinc nickel alloy, electrophoresis, dacromet, CD grain, PVD, etc.
Yuyao Hutson Metal Product Co., Ltd.
  • Ma Huazhen/Xu Tianyang

  • +86-13095941973, 18268663653

  • +86-574-62761228

  • Material: stainless steel, A2-70, A2-80, A4-70, A4-80, A2(302, 303, 304), A4(316), 410, 430; Complete specifications

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