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(Non-preferred) dimensions in parentheses.

Unit:mm

Hexalobular Socket Countersunk Flat Head Screws (common head style) with Reduced Loadability

ISO 14581 - 2022

Display drawing:

国际ISO 14581 - 2022 ISO14581 14581ISO Hexalobular Socket Countersunk Flat Head Screws (common head style) with Reduced Loadability
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
M2 (M2.5) M3 (M3.5) M4 M5 M6 M8 M10
P Pitch
a max
b Ref.
dk theoretical max
actual max
min
ds ≈
k max=nominal size
min
r max
min
x max
Socket No.
A Ref.
t max
min
Minimum tensile load(N) 4.8
8.8
10.9
50
70
0.4 0.45 0.5 0.6 0.7 0.8 1 1.25 1.5
0.8 0.9 1 1.2 1.4 2 2.5 3.13 3.75
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 7.3 8.4 9.3 11.3 15.8 18.3
3.5 4.4 5.2 6.94 8.04 8.94 10.87 15.37 17.78
1.7 2.15 2.6 3.05 3.5 4.4 5.3 7.1 8.9
1.2 1.5 1.65 2.35 2.7 2.7 3.3 4.65 5
0.985 1.224 1.369 1.995 2.333 2.28 2.81 4.06 4.4
0.5 0.6 0.8 0.9 1 1.3 1.5 2 2.5
0.1 0.1 0.1 0.15 0.2 0.2 0.25 0.4 0.4
1 1.1 1.25 1.5 1.75 2 2.5 3.2 3.8
T6 T8 T10 T15 T20 T25 T30 T45 T50
1.75 2.4 2.8 3.35 3.95 4.5 5.6 7.95 8.95
0.64 0.79 0.83 1.32 1.53 1.51 1.78 2.54 2.8
0.51 0.66 0.7 1.16 1.14 1.12 1.39 2.15 2.41
700 1140 1700 2280 2950 4770 6770 12300 19500
1330 2180 3220 4340 5620 9120 12900 23400 37100
1730 2820 4190 5640 7300 11800 16800 30500 48300
830 1360 2020 2710 3510 5680 8080 14700 23200
1170 1900 2820 3800 4920 7940 11300 20600 32500
Weight of per 1000 steel products(≈kg)
- - - - - - - - -
Length of Thread b
- - - - - - - - -

Alternative history

ISO 14581 - 2013 ISO 14581 - 2022

Suppliers

Best price if from GlobalFastener.com.
Yuyao Hutson Metal Product Co., Ltd.

  • Ma Huazhen/Xu Tianyang

  • +86-13095941973

  • +86-574-62761228

  • Material: stainless steel, A2-70, A2-80, A4-70, A4-80, A2(302, 303, 304), A4(316), 410, 430; Complete specifications
Contact us via Email
Shanghai ATM Precision Fastening Technology Co., Ltd.

  • Xu Hai

  • +86-18621311857

  • +86-21-59766477

  • Materials: 301, 302, 303, 304, 304L, 316, 316L, 316Ti, 317L, 310S, 321, 347, 1.4529, 1.4539, 1.4462, 1.4547, 1.4980, 904L, 2205, 2507, 2520, S32750, S32760, 1Cr13, 1Cr17, 2Cr13, 3Cr13, 14Cr17Ni2, 410, 416, 420, 430, 431, 440, 630, 631, 17-4PH, MP35N, 600, 601, 625, 660, 718, 750, 800, 825, 925, 926, C22, C276, A286, GH2132, GH4033, GH4080, GH4169, GH4145, 9C18Mo, 4Cr10Si2Mo, 35CrMoA, 42CrMoA, 40CrNiMoA, 25Cr2Mo1VA, SCM435, SCM440, 4130, 4140, 4145, A36, A307, A320, A325, A490, A574, F1554; stainless steel, alloy steel, titanium alloys, nickel-based alloys, high-temperature alloys, corrosion-resistant alloys, nickel-cobalt alloys, special alloys, and other special materials per customer specifications. Grades: A1-50, A2-50, A2-70, A2-80, A3-70, A4-70, A4-80, A4-90, A4-100, A5-80, B8, B8M, B8C, B8T, B6, B7, B7M, B16, C1-50, C1-70, C1-110, C3-80, C3-120, C4-70, D2-80, D2-100, D4-80, D4-100, D6-80, D6-100, D8-80, D8-100, P1-90, P1-120, F51, F53, F55, F60, 10.9, 12.9, 14.9, 15.9, 16.9; Other grades available upon request. Specifications: M3–M120, 1/4"–4". No limitation on product diameter or length; custom non-standard parts can be manufactured upon request. Surface Treatments: passivation, black oxide, phosphating, electrophoretic coating, zinc plating, nickel plating, chrome plating, cadmium plating, gold plating, silver plating, tin plating, copper plating, zinc diffusion, marine zinc, aluminum diffusion, aluminum spraying, Dacromet, Geomet, Teflon coating, zinc-nickel alloy plating, nickel-cobalt alloy plating, hot-dip galvanizing, ceramic composite coatings, molybdenum disulfide coating, tungsten disulfide coating, nano-coatings, and other surface finishes per customer requirements.
Contact us via Email
GotopScrews International Co., Limited

  • Manager Zhuang

  • +86-86-13008864675

  • +86-86-755-89505088

  • 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.
Contact us via Email
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