{"product_id":"1b2578-nut-hex-fits-caterpillar-models","title":"1B2578 Nut-Hex Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Hex Jam Nut for Caterpillar (Cat) Equipment\u003c\/h3\u003e\u003cp\u003eThis 3\/8\"-16 hex jam nut (also known as a hex lock nut) is a standard fastener used across a wide range of Caterpillar construction and heavy equipment. Galvanized zinc coated for corrosion resistance, this nut replaces Caterpillar OEM part number 1B-2578 and is interchangeable with cross-reference numbers 4B8399 and 5L4329.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNut Type: Hex Jam Nut (Hex Lock Nut)\u003c\/li\u003e\n\u003cli\u003eThread Size: 3\/8\"-16 UNC (standard coarse thread)\u003c\/li\u003e\n\u003cli\u003eNut Height: 0.22\"\u003c\/li\u003e\n\u003cli\u003eCoating: Galvanized zinc\u003c\/li\u003e\n\u003cli\u003eHardened: No\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Articulated Trucks:\u003c\/strong\u003e 725, 730, 735, 740, D250E II, D300E II, D350E II, D400E II\u003c\/p\u003e\u003cp\u003eThis is a general-use Caterpillar fastener that may fit many additional Cat construction, mining, and agricultural equipment models. Verify part number match before ordering.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e1B2578, 1B-2578, 4B8399, 5L4329\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"Reliable Aftermarket Parts, Inc® -OD","offers":[{"title":"Default Title","offer_id":42451031326803,"sku":"1B2578","price":23.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/1B2578_01.jpg?v=1757739223","url":"https:\/\/www.reliableaftermarketparts.com\/products\/1b2578-nut-hex-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}