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Hex Head Sizes & Materials

Inch Dimensions p/ANSI B18.6.3 : Metric Dimensions per DIN 931/933

Inch Sizes

Available off the shelf in 18-8 (304), 316, Grade 5 & 8

Diameter Length Range
1/4 3/8" to 10"
5/16 1/2" to 10"
3/8 1/2" to 14"
7/16 1/2" to 6"
1/2 3/4" to 18"
5/8 1" to 18"
3/4 1" to 18"
1 2" to 10"

Metric Sizes

Available off the shelf in A2, A4, 8.8, 10.9, 12.9

Diameter Length Range
4mm 6mm to 30mm
5mm 6mm to 70mm
6mm 8mm to 120mm
8mm 10mm to 150mm
10mm 12mm to 150mm
12mm 16mm to 150mm
14mm 20mm to 120mm
16mm 20mm x 150mm


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