{"product_id":"m4-4-4-x-9-0-x-1-8mm-nord-lock-steel-washer-delta-protekt-coating-nl4sp-1212","title":"M4 4.4 x 9.0 x 1.8mm Nord-lock Steel SP Washer, Delta Protekt® coating  NL4SP\/1212","description":"\u003cp\u003eTension 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. Refer to the second picture in images.\u003c\/p\u003e","brand":"Nord-Lock","offers":[{"title":"Default Title","offer_id":53328166191370,"sku":"5023512","price":0.47,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/8391\/2714\/files\/c783852b48d130aecdf0c8a3231e0792.jpg?v=1783505015","url":"https:\/\/fastenup.co.uk\/products\/m4-4-4-x-9-0-x-1-8mm-nord-lock-steel-washer-delta-protekt-coating-nl4sp-1212","provider":"Fasten Up","version":"1.0","type":"link"}