INOX 316 security shear nuts, M12
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INOX Security Shear Nut - 316 Stainless Steel is an anti-theft nut. Made in 316 (A4) stainless steel, the Security Shear Nut is a security nut with a break-off head. When it is tightened to the set torque, the head shears away and leaves a rounded nut that cannot easily be removed with a normal spanner.
Every size comes in packs of 100. Supplied in 316 (A4) stainless steel. The molybdenum in A4 gives better resistance to chlorides than A2 (304), so it is the usual choice near the coast, around pools and in marine and food-processing environments. Metric sizes are written M followed by the nominal thread diameter in millimetres, so M10 is a 10mm thread. Austenitic stainless steel is generally non-magnetic, although cold-worked parts can show weak magnetism.
Where this product is used
- Outdoor fittings exposed to salt air
- Public-area fixtures, signs and street furniture
- Transport, sports and playground fittings
- Small sizes for enclosures, instruments and light fittings
- Architectural work near the coast
- Marine and coastal fixtures
Features
- Supplied in packs of 100
- Leaves a rounded nut that is difficult to remove
- Choice of 4 sizes, M6 to M12
- A4 (316) stainless steel with molybdenum, for coastal and chloride-exposed settings
- Head breaks off when fully tightened
- Metric thread sizes match the nuts, bolts and tapped holes in most Australian-supplied equipment
Key specifications
| Specification | Detail |
|---|---|
| Brand | INOX |
| Product | Security Shear Nut |
| Type | Security nut with a break-off head |
| Material | A4 (316) stainless steel |
| Fitting tip | Use anti-seize on the thread to reduce galling |
| Key features | Head breaks off when fully tightened, Leaves a rounded nut that is difficult to remove |
| Magnetic response | Generally non-magnetic (austenitic), cold-worked parts can show weak magnetism |
| Size range | M6 to M12 |
| Head type | Break-off |
| Pack quantity | 100 |
| Typical environment | Coastal, marine, pool and food-processing use |
| Variants | 4 |
| Thread system | Metric |
Choosing the right option
A shear nut is a one-way fastener, so use it only where the joint will not need to be taken apart.
| Option | Part number | SKU |
|---|---|---|
| M6 | A0157865 | |
| M8 | A0157866 | |
| M10 | A0157867 | |
| M12 | A0157868 |
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Security Shear Nut - 316 Stainless Steel: M12
SKU: A0157868 | Model: SHNA4M12
INOX A0157868 is a 316 security shear nuts, M12. Model code: SHNA4M12. Material: 316 Stainless Steel.