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D=thread (M)
Length L (mm)
Surface finish body
SW=key width
(mm)
E
Main colour
K
Grade
B=Thread length
[Specifications]・Material: Steel・D=thread (M): 4-20・Length L (mm): 25-120・Grade 8.8, 10.9 or 12.9・Surface finish body: Bright (black) or electro zinc-plated・DIN 931/DIN EN ISO 4014/DIN EN 24014