Structural bolts & fasteners

Metric hex bolts & screws – ISO 4014 / 4017, class 4.6 to 10.9

Metric hexagon bolts and set screws ISO 4014 / 4017 (DIN 931 / 933) in classes 4.6, 5.6, 8.8 and 10.9, M6 – M64, with ISO 4032 nuts – plain, zinc or galvanized.

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ISO 4014 part-threaded and ISO 4017 fully threaded.

ISO 4014 part thread · ISO 4017 full thread
Classes 4.6, 5.6, 8.8, 10.9 (ISO 898-1)
M6 – M64, coarse and fine pitch
Nuts ISO 4032 / 4033, washers ISO 7089 / 7091
Zinc plated, HDG, black or stainless A2 / A4
JIS, GB and TCVN equivalents

What it is

General-purpose metric hexagon bolts carry secondary members, equipment, handrails, grating clips and non-preloaded connections. The property class stamped on the head – 4.6, 8.8, 10.9 – gives the tensile strength (first number × 100 MPa) and the yield ratio (second number ÷ 10).

Mechanical properties

ISO 898-1 – minimum ultimate tensile load (kN)
Size	Pitch	As (mm²)	4.6	8.8	10.9
M12	1.75	84.3	33.7	67.4	87.7
M16	2.0	157	62.8	126	163
M20	2.5	245	98.0	203	255
M24	3.0	353	141	293	367
M30	3.5	561	224	466	583
M36	4.0	817	327	678	850
M42	4.5	1120	448	930	1165
M48	5.0	1470	588	1220	1529

8.8: fu = 800 MPa up to M16, 830 MPa above. Values are minimum ultimate loads As × fu – design resistance comes from the design code.

Equivalents

ISO 4014 / 4017 correspond to the withdrawn DIN 931 / 933, to EN ISO 4014 / 4017, JIS B 1180, GB/T 5782 / 5783 and TCVN 1916 in Vietnam. Head across-flats differ slightly between ISO and DIN for M10, M12, M14 and M22.

Norme e requisiti per mercato

I codici secondo cui World Steel progetta, fabbrica e documenta questo prodotto, con i principali requisiti geometrici e di carico in ciascun mercato.