ISOboltsHexagon head

ISO 4017 Hexagon Head Screw — Full Thread, Product Grade A/B

ISO version of the full thread hexagon head screw. Head dimensions are dimensionally compatible with DIN 933 for the same nominal size.

ISO 4017 M12 × 70 — Hexagon headNominal dimensions in mm · Not to scale

Dimensions12 sizes · millimetres

Thread d	Pitch P (mm)	Width across flats s (mm)	Width across corners e (mm)	Head height k (mm)
M4	0.7	7	7.66	2.8
M5	0.8	8	8.79	3.5
M6	1	10	11.05	4
M8	1.25	13	14.38	5.3
M10	1.5	16	17.77	6.4
M12	1.75	18	20.03	7.5
M14	2	21	23.35	8.8
M16	2	24	26.75	10
M18	2.5	27	30.14	11.5
M20	2.5	30	33.53	12.5
M22	2.5	34	37.72	14
M24	3	36	39.98	15

Nominal dimensions in millimetres as published in ISO 4017. Tolerances, material requirements and marking are defined separately by the issuing body.

Available sizeslinked to individual specification pages

M4 × 10 M4 × 12 M4 × 16 M4 × 20 M4 × 25 M4 × 30 M4 × 35 M4 × 40 M4 × 50

M5 × 10 M5 × 12 M5 × 16 M5 × 20 M5 × 25 M5 × 30 M5 × 35 M5 × 40 M5 × 50

M6

M6 × 10 M6 × 12 M6 × 16 M6 × 20 M6 × 25 M6 × 30 M6 × 35 M6 × 40 M6 × 50 M6 × 60

M81.25 mm pitch

M8 × 12 M8 × 16 M8 × 20 M8 × 25 M8 × 30 M8 × 35 M8 × 40 M8 × 50 M8 × 60 M8 × 80

M101.5 mm pitch

M10 × 16 M10 × 20 M10 × 25 M10 × 30 M10 × 35 M10 × 40 M10 × 50 M10 × 60 M10 × 70 M10 × 80 M10 × 100

M121.75 mm pitch

M12 × 20 M12 × 25 M12 × 30 M12 × 35 M12 × 40 M12 × 50 M12 × 60 M12 × 70 M12 × 80 M12 × 100 M12 × 120

M14

M14 × 25 M14 × 30 M14 × 35 M14 × 40 M14 × 50 M14 × 60 M14 × 70 M14 × 80 M14 × 100 M14 × 120

M16

M16 × 25 M16 × 30 M16 × 35 M16 × 40 M16 × 50 M16 × 60 M16 × 70 M16 × 80 M16 × 100 M16 × 120

M182.5 mm pitch

M18 × 30 M18 × 35 M18 × 40 M18 × 50 M18 × 60 M18 × 70 M18 × 80 M18 × 100 M18 × 120

M202.5 mm pitch

M20 × 30 M20 × 35 M20 × 40 M20 × 50 M20 × 60 M20 × 70 M20 × 80 M20 × 100 M20 × 120

M222.5 mm pitch

M22 × 40 M22 × 50 M22 × 60 M22 × 70 M22 × 80 M22 × 100 M22 × 120

M24

M24 × 40 M24 × 50 M24 × 60 M24 × 70 M24 × 80 M24 × 100 M24 × 120

Thread referencesused by the sizes above

M4 × 0.7 M5 × 0.8 M8 × 1.25 M10 × 1.5 M12 × 1.75 M18 × 2.5 M20 × 2.5 M22 × 2.5