Manufactured to ISO 1665 / DIN 6921, Hex Flange Bolts are bolts supplied by engineeringhardware.com. The dimensional data, materials and selection notes are summarized here.
What Are Hex Flange Bolts?
Hex Flange Bolts are bolts defined by ISO 1665 / DIN 6921. 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 1665 / DIN 6921)
| Size | Pitch (mm) | Flange diameter dc (mm) | Head height k (mm) | Width across flats s (mm) | Reference standard |
|---|---|---|---|---|---|
| M5 | 0.8 | 11.8 | 4.7 | 8.0 | ISO 1665 / DIN 6921 |
| M6 | 1.0 | 14.2 | 5.6 | 10.0 | ISO 1665 / DIN 6921 |
| M8 | 1.25 | 17.9 | 7.2 | 13.0 | ISO 1665 / DIN 6921 |
| M10 | 1.5 | 21.8 | 8.9 | 15.0 | ISO 1665 / DIN 6921 |
| M12 | 1.75 | 26.0 | 10.7 | 18.0 | ISO 1665 / DIN 6921 |
| M14 | 2.0 | 29.9 | 12.3 | 21.0 | ISO 1665 / DIN 6921 |
| M16 | 2.0 | 34.5 | 14.1 | 24.0 | ISO 1665 / DIN 6921 |
| M20 | 2.5 | 42.8 | 17.5 | 30.0 | ISO 1665 / DIN 6921 |
| M24 | 3.0 | 51.1 | 21.0 | 36.0 | ISO 1665 / DIN 6921 |
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 Flange Bolts are stocked and supplied to order. Pricing starts from approximately US$0.090 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 Flange Bolts
Tell us the size, material, finish and quantity you need for Hex Flange Bolts (ISO 1665 / DIN 6921) and our team will respond within one business day.