08/26/2026
Choosing the right socket fastener is about more than dimensions alone.
Material, finish, coating, thread fit, and standard requirements should also matter as they can all affect performance, especially when the application calls for strength, corrosion resistance, traceability, or aerospace and defense requirements.
In Part 3 of our Top 27 Socket Fastener Questions & Expert Answers series, we go deeper into materials, finishes, coatings, strength, and standards, including:
• Alloy steel vs. stainless steel socket screws
• A286, Inconel®, Monel®, brass, silicon bronze, and titanium options
• Black oxide, zinc plating, passivation, dry film lubricants, and aerospace coatings
• Why plating can affect Class 3A thread fit
• Inch vs. metric standards
• NAS and MS socket fasteners
Read Part 3 here: https://blog.mfsupply.com/2026/08/26/top-27-socket-fastener-questions-expert-answers-materials-strength-finishes-inch-vs-metric-socket-screws-part-3-of-4/
Learn the differences between inch, metric, NAS and MS (Mil-Spec) socket fasteners standards, as well as the material and performance characteristics.