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This guide is for users needing to prevent fastener loosening in applications with vibration. The key benefit is enhanced reliability and reduced maintenance due to its anti-vibration design. A caveat is that it is designed for specific M12 applications and may not be suitable for all bolt sizes. The Forgefix Spring Washer - M12 is a bright zinc-plated steel washer designed with a split and helical shape to create a spring force, preventing loosening caused by vibrations through axial flexibility.
| Colour | Silver |
|---|---|
| Model Part Number | FPKSW12 |
| Brand | Forgefix |
The primary purpose is to prevent fasteners (bolts and nuts) from loosening due to vibrations or shock by creating a spring force that maintains tension.
It means the steel washer has been coated with a thin layer of zinc for improved corrosion resistance and a bright, metallic finish.
No, this specific washer is designed for M12 bolts and compatible nuts only. Using it with other sizes will result in improper fit and function.
Place the washer on the bolt shank with the split side facing the nut or the surface being clamped. Tighten the fastener until the washer is slightly compressed and engaged.
While the steel construction is robust, the zinc plating may degrade at high temperatures. For high-temperature use, consult product specifications for temperature limits or consider alternative materials.
While often used interchangeably, 'spring washer' typically refers to a washer designed to act as a spring (like this one), whereas 'lock washer' can be a broader term that includes split lock washers, tooth lock washers, etc., all designed for locking functionality.
The helical shape allows the washer to be split and bent, creating a coiled spring that exerts axial force, pushing against the fastener and the clamped surface to resist loosening.
Ensure the washer is correctly oriented with the split side facing the surface it's pressing against. Verify that the bolt and nut are indeed M12 size. Check if the washer is fully compressed and if there's adequate thread engagement.
Confirm that the spring washer is the sole locking mechanism; for extreme vibration, consider using a spring washer in conjunction with a secondary locking method like a locking nut or thread locker. Ensure the washer is not damaged or deformed.
This is typically due to prolonged exposure to moisture or corrosive elements. While zinc plating offers protection, it is not impervious. For highly corrosive environments, consider stainless steel alternatives. Ensure storage conditions are dry.
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