High tensile grade 10.9 alloy steel.
Bolts are self colour steel, uncoated
Manufactured to DIN 931.
Bolt lengths do not include the head.
M10
Thread size: M10 x 1.5mm pitch.
Thread diameter: 10mm.
Spanner size: 17mm.
Head depth: 6.4mm.
Bolts up to 125mm long have 26mm of thread*.
Bolts over 125mm long have 32mm of thread*.
M12
Thread size: M12 x 1.75mm pitch.
Thread diameter: 12mm.
Spanner size: 19mm.
Head height: 7.5mm.
Bolts up to 125mm long have 30mm of thread*.
Bolts over 125mm long have 36mm of thread*.
M16
Thread size: M16 x 2.0mm pitch.
Thread diameter: 16mm.
Spanner size: 24mm.
Head height: 10mm.
Bolts up to 125mm long have 38mm of thread*.
Bolts 125mm to 200mm long have 44mm of thread*.
*May vary between manufacturers.