51.80 Knitting Machine Needles – 100Pcs Industrial Weaving Needles
| Model no. | 51.80 |
| Material | High-carbon Steel(Anti-Corrosion, wear-Resistant) |
| Quantity per pack | 100pcs |
| Length | Customized |
| Hardness | HRC 58-62 (High hardness for long service life) |
| Surface Treatment | Black Oxide coating(Rust-Proof, Smooth operation) |
| Finish | Plain(mill finish), Passivated zinc-plated(for carbon steel) |
| Corrosion Resistance | Rust-Proof, suitable for wet/dry machining environments |
| Wear Resistance | Excellent resistance to abrasion and impact in high-speed machining |
– Knurled Aluminum Spacers – Precision Machined Threaded Standoff Spacers for Industrial Use
CNC machining accessories, tungsten carbide tool holders, metalworking carbide parts, high-precision carbide components
Our tungsten carbide collets & sleeves deliver superior precision for CNC lathes and milling machines. Made with premium carbide for long-lasting performance—ideal for metal fabrication projects.
High-precision 51.80mm knitting machine needles pack of 100 for industrial weaving equipment. Durable metal construction, perfect for textile machinery replacement parts.
Shop high-precision tungsten carbide collets and step sleeves for CNC machining, metalworking, and industrial tooling. Durable, wear-resistant carbide components for accurate tool holding.
1. Superior Corrosion Resistance: 304 stainless steel contains 18% chromium and 8% nickel, forming a protective oxide layer that resists rust, saltwater, and UV damage—perfect for coastal, marine, or humid environments (unlike zinc-plated screws that corrode within 1–2 years outdoors).
2. High Tensile Strength: Rated at A2-70, these lag screws have a minimum tensile strength of 700 MPa and yield strength of 450 MPa, supporting heavy loads (up to 2,000 lbs per screw in dense wood) for deck joists, fence posts, and roof trusses.
3. Wrench-Driven Installation: The hexagonal head allows for torque application with a socket wrench or spanner, creating a tighter fit than Phillips/slotted head wood screws—reducing the risk of stripping or loosening over time.
4. Splinter-Free Wood Engagement: The sharp, tapered point and coarse threads pull the screw into wood smoothly, minimizing splintering (critical for hardwoods like oak and maple) and ensuring a flush, secure connection.
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