{"product_id":"m4-4-4-x-9-0-x-1-8mm-nord-lock-washer-stainless-steel-sp-a4","title":"M4 4.4 x 9.0 x 1.8mm Nord-lock Washer Stainless Steel SP A4 NL4SPSS 1074","description":"\u003cp\u003eStainless steel. SP (enlarged outer diameter) Tension makes the bolt self-locking Nord-Lock wedge-locking technology secures bolted joints with tension instead of friction. The system comprises of a pair of washers that has cams on one side and radial teeth on the opposite side. Nord-Lock wedge-locking products positively lock the fastener in a joint which is subjected to extreme vibration or dynamic loads. The key is the difference in angles. Since the cam angle \" α \" is larger than the thread pitch \" β \", the pair of washers expand more than the corresponding pitch of the thread.\u003c\/p\u003e","brand":"Nord-Lock","offers":[{"title":"Default Title","offer_id":53328166486282,"sku":"5023516","price":1.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/8391\/2714\/files\/5be05ef4da89afb8b77dd0c73c9f6769.jpg?v=1783505021","url":"https:\/\/fastenup.co.uk\/products\/m4-4-4-x-9-0-x-1-8mm-nord-lock-washer-stainless-steel-sp-a4","provider":"Fasten Up","version":"1.0","type":"link"}