Manufactured to ISO 4014 / ISO 4017, Hex Bolts are bolts supplied by engineeringhardware.com. The dimensional data, materials and selection notes are summarized here.
What Are Hex Bolts?
Hex Bolts are bolts defined by ISO 4014 / ISO 4017. They are selected by thread size and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment.
Dimensions & Specifications (ISO 4014 / ISO 4017)
| Size | Pitch coarse (mm) | Width across flats s (mm) | Width across corners e min (mm) | Head height k nom (mm) | Nominal diameter d (mm) | Reference standard | Notes |
|---|---|---|---|---|---|---|---|
| M1 | 0.25 | 2.5 | 2.71 | 0.7 | 1.0 | ISO 4017 | Fully threaded |
| M1.2 | 0.25 | 3.0 | 3.28 | 0.8 | 1.2 | ISO 4017 | Fully threaded |
| M1.4 | 0.3 | 3.0 | 3.28 | 0.9 | 1.4 | ISO 4017 | Fully threaded |
| M1.6 | 0.35 | 3.2 | 3.48 | 1.1 | 1.6 | ISO 4014/4017 | Fully threaded |
| M2 | 0.4 | 4.0 | 4.32 | 1.4 | 2.0 | ISO 4014/4017 | Fully threaded |
| M2.5 | 0.45 | 5.0 | 5.45 | 1.7 | 2.5 | ISO 4014/4017 | Fully threaded |
| M3 | 0.5 | 5.5 | 6.01 | 2.0 | 3.0 | ISO 4014/4017 | Fully threaded |
| M4 | 0.7 | 7.0 | 7.66 | 2.8 | 4.0 | ISO 4014/4017 | Fully threaded |
| M5 | 0.8 | 8.0 | 8.79 | 3.5 | 5.0 | ISO 4014/4017 | Fully threaded |
| M6 | 1.0 | 10.0 | 11.05 | 4.0 | 6.0 | ISO 4014/4017 | Fully threaded |
| M8 | 1.25 | 13.0 | 14.38 | 5.3 | 8.0 | ISO 4014/4017 | Fully threaded |
| M10 | 1.5 | 16.0 | 17.77 | 6.4 | 10.0 | ISO 4014/4017 | Fully threaded |
| M12 | 1.75 | 18.0 | 20.03 | 7.5 | 12.0 | ISO 4014/4017 | Partial / fully threaded |
| M14 | 2.0 | 21.0 | 23.36 | 8.8 | 14.0 | ISO 4014/4017 | Partial / fully threaded |
| M16 | 2.0 | 24.0 | 26.75 | 10.0 | 16.0 | ISO 4014/4017 | Partial / fully threaded |
| M18 | 2.5 | 27.0 | 30.14 | 11.5 | 18.0 | ISO 4014/4017 | Partial / fully threaded |
| M20 | 2.5 | 30.0 | 33.53 | 12.5 | 20.0 | ISO 4014/4017 | Partial / fully threaded |
| M22 | 2.5 | 32.0 | 35.72 | 14.0 | 22.0 | ISO 4014/4017 | Partial / fully threaded |
| M24 | 3.0 | 36.0 | 39.98 | 15.0 | 24.0 | ISO 4014/4017 | Partial / fully threaded |
| M27 | 3.0 | 41.0 | 45.2 | 17.0 | 27.0 | ISO 4014/4017 | Partial / fully threaded |
| M30 | 3.5 | 46.0 | 50.85 | 18.7 | 30.0 | ISO 4014/4017 | Partial / fully threaded |
| M33 | 3.5 | 50.0 | 55.37 | 21.0 | 33.0 | ISO 4014/4017 | Partial / fully threaded |
| M36 | 4.0 | 55.0 | 60.79 | 22.5 | 36.0 | ISO 4014/4017 | Partial / fully threaded |
| M39 | 4.0 | 60.0 | 66.44 | 25.0 | 39.0 | ISO 4014/4017 | Partial / fully threaded |
| M42 | 4.5 | 65.0 | 71.3 | 26.0 | 42.0 | ISO 4014/4017 | Partial / fully threaded |
| M45 | 4.5 | 70.0 | 76.95 | 28.0 | 45.0 | ISO 4014/4017 | Partial / fully threaded |
| M48 | 5.0 | 75.0 | 82.6 | 30.0 | 48.0 | ISO 4014/4017 | Partial / fully threaded |
| M52 | 5.0 | 80.0 | 88.25 | 33.0 | 52.0 | ISO 4014/4017 | Partial / fully threaded |
| M56 | 5.5 | 85.0 | 93.56 | 35.0 | 56.0 | ISO 4014 | Partial / fully threaded |
| M60 | 5.5 | 90.0 | 99.21 | 38.0 | 60.0 | ISO 4014 | Partial / fully threaded |
| M64 | 6.0 | 95.0 | 104.86 | 40.0 | 64.0 | ISO 4014 | Partial / fully threaded |
Materials & Finishes
Common materials include carbon steel (typically zinc plated or hot-dip galvanized), alloy steel in property classes 8.8, 10.9 and 12.9, and stainless steel A2 (304) or A4 (316) for corrosion resistance. Specify the material, property class and surface finish appropriate to your load and environment.
Typical Applications
Structural steelwork, machinery, automotive and general assembly where high-strength, removable joints are required.
Related Fasteners
Pricing
Hex Bolts are stocked and supplied to order. Pricing starts from approximately US$0.080 per piece for standard sizes in carbon steel; final pricing depends on size, material, finish and order quantity (MOQ applies). Request a quotation below for your exact specification.
Request a Quotation for Hex Bolts
Tell us the size, material, finish and quantity you need for Hex Bolts (ISO 4014 / ISO 4017) and our team will respond within one business day.