Magform专利螺丝

MAG-FORM® Standard thread-forming fasteners can easily exceed the ductility limits of low-ductile materials, causing thread damage and excess debris. Mag-Form® fasteners are specifically designed to eliminate tapping operations while forming strong threads in conventional magnesium die-castings and similar materials, with minimal debris generation and good serviceability. STANDARD DESIGN GUIDELINES • Sizes: MG1.6 to MG12 • Thread Design: Wide-spaced thread with broad flank angle • Head Design: Can be used with any external or internal head designs • Drive System: Can be used with all systems, including TORX PLUS® Drive • Finish: Zinc and chromate to minimize galvanic corrosion FEATURES • Lobular configuration • Wide-spaced thread design • Broad flank angle compresses, rather than roll-forms, threads into the mating material BENEFITS • Minimizes debris generation • Forms strong threads in materials with low ductility • Can easily be removed and reinserted for service in the field TYPICAL APPLICATIONS • Automotive engines and transmissions; airbag assemblies; mirrors; pedal brackets; steering components • Small engines • Power tools • Lawn and garden equipment • Electronics • Cellphones • Computers THREAD FORMING FASTENERS FOR MAGNES IUM MINIMIZES DEBRIS GENERATION IN CRITICAL APPLICATIONS When driven into low-ductile materials, standard thread-forming fasteners with a 60° flank angle, create excess debris. They can easily exceed the ductility limits of the material, causing damage to the formed threads. Mag-Form® thread-forming fasteners feature a broader flank angle. When driven into low-ductile materials, such as magnesium die-castings, a compressive action forms strong threads in the material with minimal debris generation. Mag-Form® fasteners also allow multiple removals and reinsertions, unlike standard thread-forming fasteners. Because they produce minimal debris during installation, Mag-Form® fasteners are the optimal solution for critical applications such as steering components and air bag modules. Mag-Form® Thread- Forming Fasteners Compressive action forms strong threads in low-ductile materials Standard 60° Flank Angle Thread-Forming Fasteners May exceed ductility limit of the material, causing damage to formed threads From Semblex ® Mag-Form® and TORX PLUS® are registered trademarks of Textron Inc. • Minimum engagement length of full threads is generally 2.5 times the basic screw diameter. • Recommended engagement length does not include lead threads (2 pitch ref.) • Typical hole engagement, 65-70%. Screw Size (1) Boss DiameterHole Diameter Core Hole Depth Hole Diameter Distance to Edge (2) Through Hole Depth Min.Max. Min.Max. Min Min. A B C D X Y Z Nominal Min. Min. mm in mm in mm in mm in mm in mm in mm in mm in mm in Drilled Hole Footnotes: 1. Additional sizes available upon request. 2. Minimum distance to edge without measurable distortion. Cored Hole Mag-Form® Drilled Hole Casting CORPORATION MAG-FORM ® HOLE SIZE DATA Mag-Form® Cored Hole Casting MG3-1.0 2.85 2.77 2.72 2.64 6.75 10.50 2.75 2.00 7.50 0.112 0.109 0.107 0.104 0.266 0.413 0.108 0.079 0.295 MG3.5-1.2 3.28 3.20 3.13 3.05 7.83 12.35 3.17 2.33 8.75 0.129 0.126 0.123 0.120 0.308 0.486 0.125 0.092 0.344 MG4-1.4 3.70 3.62 3.52 3.44 8.90 14.20 3.57 2.67 10.00 0.146 0.143 0.139 0.135 0.350 0.559 0.141 0.105 0.394 MG4.5-1.5 4.13 4.05 3.94 3.86 10.00 15.75 4.00 3.00 11.25 0.163 0.159 0.155 0.152 0.394 0.620 0.157 0.118 0.443 MG5-1.6 4.58 4.50 4.36 4.28 11.10 17.30 4.43 3.33 12.50 0.180 0.177 0.172 0.169 0.437 0.681 0.174 0.131 0.492 MG6-2.0 5.46 5.38 5.20 5.12 13.29 21.00 5.29 4.00 15.00 0.215 0.212 0.205 0.202 0.523 0.827 0.208 0.157 0.591 MG7-2.0 6.49 6.41 6.18 6.10 15.63 23.50 6.29 4.67 17.50 0.256 0.252 0.243 0.240 0.615 0.925 0.248 0.184 0.689 MG8-2.5 7.33 7.25 6.98 6.90 17.78 27.50 7.12 5.33 20.00 0.289 0.285 0.275 0.272 0.700 1.083 0.280 0.210 0.787 MG10-3.0 9.20 9.12 8.76 8.68 22.27 34.00 8.94 6.67 25.00 0.362 0.359 0.345 0.342 0.877 1.339 0.352 0.263 0.984 MG12-3.5 11.06 10.98 10.54 10.46 26.76 40.50 10.76 8.00 30.00 0.435 0.432 0.415 0.412 1.054 1.594 0.424 0.315 1.181 ®