Square Nut
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WhatsApp us Get a Quote +91 90333 11425 Download catalogue (PDF)JMIKS Fasteners supplies square nuts in SS 304, SS 316 and SS 202, and in mild steel and high tensile grades, from M3 to M36 and ¼” to 1-1/4″ BSW, with zinc plated, HDG or self finish.
Standard : DIN / IS / AISI
Size : Metric : M3 To M36 / BSW : ¼” to 1-1/4”
Material Grade: SS304 | SS316 | SS202 | 4.6 |8.8 | 10.9 | 12.9
Finish : Zinc Plated , HDG , Self finish
A square nut has four sides and a larger bearing face than a hex nut of the same size. Its flat sides stop it from turning in slots and channels. The common standards are DIN 557 and DIN 562 (thin type).
Key dimensions of DIN 557 square nuts in common sizes, in mm. The width across flats is also the spanner size.
| Size | Thread pitch | Width across flats | Height |
|---|---|---|---|
| M5 | 0.8 | 8 | 4.0 |
| M6 | 1.0 | 10 | 5.0 |
| M8 | 1.25 | 13 | 6.5 |
| M10 | 1.5 | 17 | 8.0 |
| M12 | 1.75 | 19 | 10.0 |
| M16 | 2.0 | 24 | 13.0 |
Typical dimensions as per DIN 557; refer to the standard for tolerances.
A square nut does not spin in a slot or channel, and its bigger contact area grips better on soft materials.
DIN 557 is the regular square nut, with a height of about 0.8 times the thread size. DIN 562 is a thin square nut for slots and tight spaces where the load is light.
Use a square washer under the nut. Its large square seat spreads the load and stops the nut from sinking into the wood.
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