Metric Hex Flange Bolt (DIN 6921): Dimensions & Specifications

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Metric Hex Flange Bolt (DIN 6921) (ANSI B1.1 UNC, UNF) | Units: mm

Nominal
Size of Screw

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Width
Across Flats
(F)

Width
Across
Corners
(G)

Flange
Diameter
(B)

Body
Diameter
(E)
Head
Height
(H)

Hex
Height
(K)

Thread
Length
(LT)

Max Min Min Max Max Min Max Min Basic
M5 8.00 7.78 8.71 11.80 5.00 4.82 5.40 2.80 16.00
M6 10.00 9.78 10.95 14.20 6.00 5.82 6.60 3.40 18.00
M8 13.00 12.73 14.26 18.00 8.00 7.78 8.10 4.20 22.00
M10 15.00 14.73 16.50 22.30 10.00 9.78 9.20 5.70 26.00
M12 16.00 15.73 17.62 26.60 12.00 11.73 11.50 6.10 30.00
M14 18.00 17.73 19.86 30.50 14.00 13.73 12.80 7.10 34.00
M16 21.00 20.67 23.15 35.00 16.00 15.73 14.40 8.70 38.00

 

DIN 6921 Class 8.8 DIN 6921 Class 8.8 DIN 6921 Class 12.9
Material: 10B21/AISI 1035 Material: Alloy Steel AISI 4135 Material: Alloy Steel AISI 4135
Tensile Strength: Min 800 MPa Tensile Strength: Min 1040 MPa Tensile Strength: Min 1220 MPa
Core Hardness: HRC 22~32 Core Hardness: HRC 32~39 Core Hardness: HRC 39~44
Class of Thread: M5 through M16, 6g Class of Thread: M5 through M16, 6g Class of Thread: M5 through M16, 6g

Additional Resources

Shop Metric DIN 6921 Hex Flange Bolts (Frame Bolts)
 


Download Metric DIN 6921 Hex Flange Bolts PDF

Metric DIN 6921 Hex Flange Bolts PDF
 
 

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