HeliCoil A4184-12CN180 M12x1.75 S/L Screw Thread Inserts 100pc
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These are new HeliCoil A4184-12CN180 screw thread inserts, manufactured by Stanley Engineered Fastening in Danbury, CT with global materials. Each insert is a wire-form helical coil designed to create a strong internal thread in a tapped hole, specified for M12x1.75 metric coarse thread at a screw-length (S/L) installation depth, typically 1.5x nominal diameter (18mm). The inserts are made from 18-8 stainless steel wire, providing corrosion resistance and hardness superior to most parent materials including aluminum, magnesium, and cast iron, making them standard for thread repair and original equipment manufacturing in automotive, aerospace, and heavy equipment applications. This bag contains 100 pieces per the factory label (Part No. A4184-12CN180, Control No. 1930908), and requires the corresponding HeliCoil installation tool and STI (Screw Thread Insert) drill and tap set for M12x1.75 installation.
Product Specifications
| Brand | HeliCoil / Stanley Engineered Fastening |
| Part Number | A4184-12CN180 |
| Control Number | 1930908 |
| Thread Size | M12x1.75 |
| Thread Standard | Metric Coarse |
| Insert Length | S/L (Screw Length) — 1.5x nominal = 18mm |
| Material | 18-8 Stainless Steel |
| Quantity | 100 pieces |
| Condition | New |
| Country of Origin | USA (w/ global materials) |
| RoHS Compliance | Not RoHS 2015/863/EU Compliant |
| Manufacturer | Stanley Engineered Fastening, Danbury CT |
| Insert Type | Free-Running (Helical Coil) |
| Compatible Tap Standard | STI (Screw Thread Insert) M12x1.75 |