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The Range£20.06Visit shop Unifix Grade 12.9 Socket Shoulder Screws 6Mm (M5) X 25 - Box Of 50 - Grey
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The Unifix Grade 12.9 Socket Shoulder Screws are precision-engineered fasteners designed for mechanical engineers, fabricators, and DIY enthusiasts who require superior tensile strength in high-load assemblies. Built to ISO 7379 standards, these screws provide excellent durability for pivoting, locking, or aligning components in machinery; however, the high-strength steel requires proper torque management to avoid shearing in non-standard threaded applications.
| Colour | Grey |
|---|---|
| Model Part Number | Q124168000600025000 |
| Brand | Unifix |
It is a property class for steel bolts, indicating a high level of tensile strength, specifically 1200 MPa of ultimate tensile strength.
While durable, these are made of high-strength steel and are susceptible to rust. If used outdoors, they should be coated or painted to protect against moisture.
You will need a standard metric Allen key (hex key) sized appropriately for the socket head.
Yes, because they are manufactured from high-tensile carbon steel, they will be attracted to magnets.
Each box contains 50 units.
Ensure you are using a new, high-quality metric hex key that fits snugly into the socket without wiggle room.
Check that the tapped hole is free of debris or burrs and verify that the thread pitch matches the M5 specifications.
Verify the component hole diameter with calipers; the shoulder must have a clearance fit to function correctly as a pivot point.
For optimal performance, always ensure the hole or component being fastened has been tapped or drilled to the exact specifications required for an M5 screw. Use a high-quality Allen key (hex key) to drive the bolt, ensuring the key is fully seated in the socket to avoid stripping the head. To maintain the integrity of the Grade 12.9 steel, store these screws in a dry environment. If used in industrial settings where the screws are exposed to coolant or moisture, consider applying a light coat of machine oil or an appropriate anti-corrosion spray to the exposed threads and shoulder to prevent surface oxidation.
