{"product_id":"proform-66754-wedge-locking-header-bolts-hex-head-m8-x-984-inch-chevy-ls-nickel-plt-12-pcs-proform","title":"ProForm 66754 Wedge-Locking Header Bolts Hex Head M8 X .984 Inch Chevy LS Nickel Plt 12 Pcs Proform","description":"\u003cp\u003eEach PROFORM Grade 8 Header Bolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ ft-lbs, the washers super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header. 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. When changing headers, PROFORM Header Bolts can be untightened with a normal wrench, lubricated, and reused. Sold as a set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEngine Header Bolts\u003c\/li\u003e\n\u003cli\u003eWedge-Locking Technology\u003c\/li\u003e\n\u003cli\u003eHex Head Type\u003c\/li\u003e\n\u003cli\u003e8mm x 1.25 x 0.984 Inch Long\u003c\/li\u003e\n\u003cli\u003eShiny Nickel Plated Finish\u003c\/li\u003e\n\u003cli\u003e12 Pcs in kit\u003c\/li\u003e\n\u003cli\u003eFits GM LS Engines With 1\/4 Inch Wide Flange\u003c\/li\u003e\n\u003cli\u003eSold As A Set\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003ch5\u003eSpecifications:\u003c\/h5\u003e\u003cbr\u003e\u003ctable class=\"descr-table\" border=\"0\"\u003e\n\u003ctr\u003e\n\u003ctd\u003ebrand_logo\u003c\/td\u003e\n\u003ctd\u003ehttps:\/\/www.asapnetwork.org\/sites\/default\/files\/brands\/icons\/icon_4.jpg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ecolor_l\u003c\/td\u003e\n\u003ctd\u003eNickel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_ABR\u003c\/td\u003e\n\u003ctd\u003eHeader Bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_ASC\u003c\/td\u003e\n\u003ctd\u003eWedge-Locking Header Bolts; Hex Head; M8 X .984in; Chevy LS; Nickel Plt; 12 Pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_DEF\u003c\/td\u003e\n\u003ctd\u003eExhaust Header Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_DES\u003c\/td\u003e\n\u003ctd\u003eWedge-Locking Header Bolts; Hex Head; M8 X .984in; Chevy LS; Nickel Plt; 12 Pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_EXT\u003c\/td\u003e\n\u003ctd\u003eEngine Header Bolts; Wedge-Locking Technology; Hex Head Type; M8 Thread X .984 Inch Long; Shiny Nickel Plated; 12.9 Steel; 12 Pcs in kit; Fits GM LS Engines with 1\/4in Wide Flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_INV\u003c\/td\u003e\n\u003ctd\u003eHeader Bolts; Hex Head; M8 X .984\"L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_LAB\u003c\/td\u003e\n\u003ctd\u003eWedge-Locking Header Bolts; Hex Head; M8 X .984in; Chevy LS; Nickel Plt; 12 Pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_MKT\u003c\/td\u003e\n\u003ctd\u003eEach PROFORM 12.9 Steel (equiv. Grade 8+) Header Bolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ ft-lbs, the washers super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header. 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. It's 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. When changing headers, PROFORM Header Bolts can be untightened with a normal wrench, lubricated, and reused.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription_SHO\u003c\/td\u003e\n\u003ctd\u003eLocking Header Bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003efinish_l\u003c\/td\u003e\n\u003ctd\u003ePlated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eheight\u003c\/td\u003e\n\u003ctd\u003e1.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003elast_update\u003c\/td\u003e\n\u003ctd\u003e2021-06-28 05:37:28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003elength\u003c\/td\u003e\n\u003ctd\u003e6.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLTL\u003c\/td\u003e\n\u003ctd\u003eN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003esold_as\u003c\/td\u003e\n\u003ctd\u003eSet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStyle\u003c\/td\u003e\n\u003ctd\u003eBolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e8mm x 1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eweight\u003c\/td\u003e\n\u003ctd\u003e1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ewidth\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"ProForm","offers":[{"title":"Default Title","offer_id":42550199320757,"sku":"ds_BCHW_66754","price":74.08,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0283\/1905\/5956\/files\/b4dd43f28ef7b.jpg?v=1692398915","url":"https:\/\/www.truckpartsuperstore.ca\/products\/proform-66754-wedge-locking-header-bolts-hex-head-m8-x-984-inch-chevy-ls-nickel-plt-12-pcs-proform","provider":"Truck Part Superstore","version":"1.0","type":"link"}