DIN 6334 Connector Nuts
DIN 6334 covers hexagon connector nuts, three diameters in length, used to join lengths of threaded rod or studs. We supply DIN 6334 connector nuts in steel property classes 4 and 10 and stainless steel A2 and A4, across a wide range of metric sizes.
Also known as: connector nut, extension nut, coupling nut, studding connector.
DIN 6334 dimensions
| Diameter | Pitch | Depth of Nut | Across Flats |
|---|---|---|---|
| M5 | 0.8mm | 15mm | 8mm |
| M6 | 1.0mm | 18mm | 10mm |
| M8 | 1.25mm | 24mm | 13mm |
| M10 | 1.5mm | 30mm | 17mm |
| M12 | 1.75mm | 36mm | 19mm |
| M14 | 2mm | 42mm | 22mm |
| M16 | 2mm | 48mm | 24mm |
| M18 | 2.5mm | 54mm | 27mm |
| M20 | 2.5mm | 60mm | 30mm |
| M22 | 2.5mm | 66mm | 32mm |
| M24 | 3.0mm | 72mm | 36mm |
| M27 | 3.0mm | 81mm | 41mm |
| M30 | 3.5mm | 90mm | 46mm |
| M36 | 4mm | 108mm | 55mm |
Materials & strength
Height of three diameters
The body length is approximately three thread diameters, giving space for both rod ends to engage.
Steel grades 4 & 10, stainless A2/A4
Grade 4 suits general studding work and grade 10 the high-tensile rod grades; A2 and A4 stainless cover corrosive environments.
What is a DIN 6334 connector nut?
DIN 6334 covers hexagon connector nuts - also called coupling nuts, extension nuts or studding connectors - with a height of three times the thread diameter. They join two lengths of studding or threaded rod end to end, or connect a rod to another threaded component.
How do I join studding with a connector nut?
Common practice is to run each rod into the connector so the two ends engage roughly equally in each half. If your application is specified on a drawing, send us your requirement and we can identify the appropriate product.
Are connector nuts, coupling nuts and extension nuts the same thing?
Yes - the names are used interchangeably for the same product, and DIN 6334 is the usual designation. Catalogues sometimes list them simply as hexagon connection nuts.
What materials are DIN 6334 connector nuts available in?
DIN 6334 connector nuts are available in steel grades 4 and 10 and stainless steel A2 and A4 across a wide range of metric sizes, matching the common studding grades.
Need DIN 6334 in a non-standard size or material?
Send us your drawing — specials quoted within 24 hours.