{"product_id":"zinc-coated-grower-washer-m4-rond-grower4","title":"La Marzocco ROND_GROWER4 Zinc Coated Grower Washer, M4 | Fits KB90","description":"\u003cp\u003eEnsure the reliability and structural integrity of your espresso machine components with the genuine Zinc Coated Grower Washer, M4 (Part # ROND_GROWER4) from Kaldi.com. This essential M4 split lock washer is engineered to prevent bolts and nuts from loosening due to vibration or thermal expansion—a common issue in high-temperature espresso environments. Key features include a durable zinc coating for superior corrosion resistance and a precision M4 sizing (4mm internal diameter) for a perfect fit in small-scale fastening applications. Invest in this OEM-quality solution designed for longevity and performance. **Problem\/Solution:** Are you experiencing **loose screws on your espresso machine after use**? The constant vibration from the pump and thermal cycles can compromise standard fasteners. The Zinc Coated Grower Washer, M4 provides the critical spring tension needed to maintain maximum joint tightness, solving the frustrating problem of **fasteners backing out on commercial espresso equipment**. Its split ring design acts as a locking mechanism, ensuring a secure grip and minimizing maintenance downtime. Use this washer in conjunction with M4 bolts wherever a tight, vibration-proof seal is required, particularly within the chassis or internal bracing of La Marzocco equipment. This component is an indispensable part of your preventative maintenance routine. Restore consistent operation and reduce the need for frequent retightening with the ROND_GROWER4. This part is critical for technicians and commercial café operators looking to maintain high-volume espresso machine performance. Purchase the Zinc Coated Grower Washer, M4 today to guarantee a firm, long-lasting connection and eliminate **vibration-related loosening issues** in your Coffee Maker \u0026amp; Espresso Machine Replacement Parts inventory.\u003c\/p\u003e","brand":"La Marzocco","offers":[{"title":"Default Title","offer_id":51514071580955,"sku":"LM:ROND_GROWER4","price":0.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0937\/6002\/8955\/files\/la-marzocco-logo.svg?v=1775501370","url":"https:\/\/kaldi.com\/products\/zinc-coated-grower-washer-m4-rond-grower4","provider":"Kaldi.com","version":"1.0","type":"link"}