{"product_id":"proform-pr66757-wedge-lock-exhaust-collector","title":"Proform PR66757 Wedge Lock Exhaust Collector","description":"\u003cp\u003eEach PROFORM Grade 8 Collector Bolt and Nut combo is permanently assembled with two pairs special locking washers. When the combo is tightened, the washers super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the flange. After being self-locked in this manner, any bolt-loosening rotation is blocked by a wedge-locking action created by the washers interfacing, matching cams. Its an uphill climb: vibration that might ordinarily loosen the bolt actually increases the wedge-locking tension, securing the bolt even more. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. PROFORM Collector Bolts can be untightened with a normal wrench, lubricated, and reused.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures: \u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGrade 8 (12.9) Steel\u003c\/li\u003e\n\u003cli\u003eHex Head Type\u003c\/li\u003e\n\u003cli\u003e1-inch Length\u003c\/li\u003e\n\u003cli\u003eSold as One Set Of 6 Pieces\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e","brand":"Proform Parts","offers":[{"title":"Default Title","offer_id":44547626467639,"sku":"PR66757","price":69.7,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/130643.jpg?v=1780498400","url":"https:\/\/enginemaster.com.au\/products\/proform-pr66757-wedge-lock-exhaust-collector","provider":"Engine Master","version":"1.0","type":"link"}