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OnBuy.com£14.11Visit shop M3 X 30Mm 12.9 Alloy Steel Hex Socket Head Cap Screws Bolt Black 100Pcs 711331847645
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The uxcell M3 x 30mm Hex Socket Cap Screw is an essential fastening component designed for professionals and DIY enthusiasts working on industrial, communication, or home appliance projects. It provides a highly secure, flush-fitting hold for machinery and assembly tasks, though users should ensure they possess the correct hex key size to prevent stripping the socket during installation.
| Colour | Black |
|---|---|
| Model Part Number | M3 x 30mm |
| Brand | uxcell |
M3 refers to the metric thread diameter of 3mm.
These screws are 30mm long, measured from under the head to the tip of the thread.
While durable, they are primarily designed for indoor machinery and appliances. Use in high-moisture outdoor environments may eventually cause rust.
You will need a standard metric hex key (Allen wrench) sized specifically for M3 socket cap heads.
Most standard steel hex socket screws exhibit magnetic properties; if your application is sensitive to magnetism, verify the specific material composition.
Ensure the hex key is fully inserted into the socket and is the correct metric size for M3 hardware.
Check the threaded hole for cross-threading or metal shavings and clean with a tap if necessary.
To install, ensure your threaded hole is cleaned of debris or old adhesive. Use a high-quality Allen wrench (hex key) that matches the M3 socket size exactly to avoid cam-out or stripping. Do not over-torque, as this may shear the screw or damage the receiving thread. For maintenance, keep the screws dry; while the finish is durable, exposure to harsh outdoor elements may eventually lead to oxidation. If using in high-vibration applications, consider applying a drop of medium-strength thread locker to ensure the screw remains secured over time.
