{"product_id":"wedge-locking-proform-header-bolt-66757","title":"Wedge Locking Proform Header Bolt 66757","description":"\u003cp\u003eProform's grade 8 Wedge-Locking header bolts are designed to prevent backing out by using a pair of special washers that are permanently attached.\u003c\/p\u003e\u003cp\u003eHow do they work?\u003c\/p\u003e\u003cp\u003eWhen torqued to 28+ ft.-lbs, the super-hardened external teeth of the washers grip the bottom of the bolt head and the top surface of the header.\u003c\/p\u003e\u003cp\u003eAfter being self-locked in this manner, any rotation that might loosen the bolt is blocked by a wedge-locking action created by the matching cams of the washers.\u003c\/p\u003e\u003cp\u003eIt's an uphill climb: vibration that might ordinarily loosen the bolt actually increases the tension of the wedge-locking, securing the bolt even more.\u003c\/p\u003e\u003cp\u003eBecause this simple method uses tension instead of friction, contact with oil actually facilitates the wedge effect.\u003c\/p\u003e\u003cp\u003eWhen changing headers, PROFORM Header Bolts can be untightened with a normal wrench, lubricated, and reused.\u003c\/p\u003e\u003cp\u003eThese bolts are sold in complete sets, enough for both headers.\u003c\/p\u003e","brand":"Proform","offers":[{"title":"Default Title","offer_id":51739120206106,"sku":"PFM66757","price":50.05,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8942\/8506\/files\/7135f3Uio3L.jpg?v=1771863655","url":"https:\/\/trybeepbeep.com\/products\/wedge-locking-proform-header-bolt-66757","provider":"TryBeepbeep","version":"1.0","type":"link"}