M5 × 0.8 × 8 × 4 × 6.7 × 11.3 × 9.93 × 3.52 × 2.5 × 7.64
dNominal Diameter (mm)M5
PThread Pitch (mm)0.8
sWidth Across Flats (max) (mm)8
mNut Height (mm)4
dwBearing Diameter (min) (mm)6.7
eWidth Across Corners (max) (mm)11.3
MOQ2000
Square Nut
DIN 557 (Current)
- Material
- Stainless Steel, Carbon Steel
- Property Class
- A4-80, A2-70, 6, 8 and more
- Finish
- Passivated, Plain, Zinc Plated
- Size range
- M5–M16
Share
Select sizes and quantities — 6 confirmed sizes to DIN 557
Material
Grade
Stainless SteelCarbon Steel
Finish
| dNominal Diameter (mm) | PThread Pitch (mm) | sWidth Across Flats (max) (mm) | mNut Height (mm) | dwBearing Diameter (min) (mm) | eWidth Across Corners (max) (mm) | MOQ | Quantity and inquiry |
|---|---|---|---|---|---|---|---|
| M5 | 0.8 | 8 | 4 | 6.7 | 11.3 | 2000 | |
| M6 | 1 | 10 | 5 | 8.7 | 14.1 | 2000 | |
| M8 | 1.25 | 13 | 6.5 | 11.5 | 18.4 | 1200 | |
| M10 | 1.5 | 17 | 8 | 14.5 | 24 | 1200 | |
| M12 | 1.75 | 19 | 10 | 16.5 | 26.9 | 800 | |
| M16 | 2 | 24 | 13 | 22 | 33.9 | 800 |
Showing 6 of 6 sizes
M6 × 1 × 10 × 5 × 8.7 × 14.1 × 12.53 × 4.52 × 3.2 × 9.64
dNominal Diameter (mm)M6
PThread Pitch (mm)1
sWidth Across Flats (max) (mm)10
mNut Height (mm)5
dwBearing Diameter (min) (mm)8.7
eWidth Across Corners (max) (mm)14.1
MOQ2000
M8 × 1.25 × 13 × 6.5 × 11.5 × 18.4 × 16.34 × 5.92 × 4.1 × 12.57
dNominal Diameter (mm)M8
PThread Pitch (mm)1.25
sWidth Across Flats (max) (mm)13
mNut Height (mm)6.5
dwBearing Diameter (min) (mm)11.5
eWidth Across Corners (max) (mm)18.4
MOQ1200
M10 × 1.5 × 17 × 8 × 14.5 × 24 × 21.54 × 7.42 × 5.2 × 16.57
dNominal Diameter (mm)M10
PThread Pitch (mm)1.5
sWidth Across Flats (max) (mm)17
mNut Height (mm)8
dwBearing Diameter (min) (mm)14.5
eWidth Across Corners (max) (mm)24
MOQ1200
M12 × 1.75 × 19 × 10 × 16.5 × 26.9 × 24.02 × 9.42 × 6.6 × 18.57
dNominal Diameter (mm)M12
PThread Pitch (mm)1.75
sWidth Across Flats (max) (mm)19
mNut Height (mm)10
dwBearing Diameter (min) (mm)16.5
eWidth Across Corners (max) (mm)26.9
MOQ800
M16 × 2 × 24 × 13 × 22 × 33.9 × 30.11 × 12.3 × 8.6 × 23.16
dNominal Diameter (mm)M16
PThread Pitch (mm)2
sWidth Across Flats (max) (mm)24
mNut Height (mm)13
dwBearing Diameter (min) (mm)22
eWidth Across Corners (max) (mm)33.9
MOQ800
Product details
- Description
- Square nut manufactured to DIN 557. The four-sided body provides a flat wrenching surface and a larger bearing face than a standard hex nut, making it suitable for use in channels, square holes, or where a spanner cannot access the sides. The internal thread runs through the full height of the nut. Supply options cover metric diameters from M5 to M16 in carbon steel grades 6, 8, and 10, or stainless steel grades A2-70 and A4-80. Surface finishes include zinc plated, plain, or passivated. When requesting a quotation, specify the diameter, material, grade, and finish required.
- Features
- Square body with four flat wrenching sides · Full-height internal thread · Available in M5–M16 · Supplied in carbon steel grades 6, 8, 10 and stainless steel A2-70, A4-80
- Applications
- Channel, slot and T-track assemblies, Timber and steel bolted connections, General machinery assembly
Order assurance
Confirmed for the quoted product and order.Reports & inspection
Agreed in the quotation.
- EN 10204 3.1 material certificate
- Dimensional inspection report
- Certificate of conformity
- Mechanical test report
- Chemical analysis report
- Coating inspection report
- Batch and lot traceability
Packaging & delivery
Options we supply.
- Bulk carton packing
- Small boxes with outer cartons
- Palletized shipment
- Fumigation-free pallets
- Inner poly bags
- Buyer branding and labels
Product questions
What sizes of Square Nut do you supply?
Execution standard: DIN 557. The confirmed specification table covers M5–M16 diameters. Use the specification table to select the exact variant required for quotation.
Which materials, grades and finishes can I order?
Material: Stainless Steel, Carbon Steel; Property class: A4-80, A2-70, 6, 8, 10; Finish: Passivated, Plain, Zinc Plated. Availability should be confirmed against the selected specification and order quantity.
Where are these square nuts typically used?
Typical applications include Channel, slot and T-track assemblies, Timber and steel bolted connections, General machinery assembly. Final suitability depends on the selected material, grade, finish and operating conditions.
