{"product_id":"9-16-x-3-1-2-greaseable-wet-shackle-bolt-trailer-leaf-springs","title":"TRP 9\/16\" × 3-1\/2\" Greaseable Wet Shackle Bolt (SHB-91635-LUBE)","description":"\u003ch3\u003eTRP SHB-91635-LUBE Greaseable Wet Shackle Bolt\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eTRP SHB-91635-LUBE\u003c\/strong\u003e is a 9\/16\"-18 UNF × 3-1\/2\" trailer leaf-spring shackle bolt with an internal grease passage and an installed Zerk fitting (“wet” or greaseable design). Direct replacement for worn or damaged shackle hardware on utility, cargo, boat, dump, and equipment trailers. Zerk fitting allows the bushing to be lubricated under load without disassembling the shackle, extending bushing life and reducing wear. Replace shackle bolts in pairs to maintain even suspension geometry.\u003c\/p\u003e\u003ch3\u003e⚙️ Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTRP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer Part #\u003c\/td\u003e\n\u003ctd\u003eSHB-91635-LUBE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e9\/16\"-18 UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e3-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread length\u003c\/td\u003e\n\u003ctd\u003e5\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread diameter\u003c\/td\u003e\n\u003ctd\u003e0.5625\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead style\u003c\/td\u003e\n\u003ctd\u003eHex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStyle\u003c\/td\u003e\n\u003ctd\u003eGreaseable (wet) — internal grease passage with installed Zerk fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSteel, zinc plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. weight\u003c\/td\u003e\n\u003ctd\u003e~0.25 lb each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003e🔧 Fitment\u003c\/h3\u003e\u003cp\u003eFits standard 9\/16\" trailer leaf-spring shackles requiring a 3-1\/2\" greaseable shoulder bolt. Common application on utility, cargo, boat, dump, and equipment trailers using slipper or double-eye leaf springs. Replaces dry (non-greaseable) shackle bolts of the same dimensions. Confirm bolt length and thread match your shackle bushings before ordering.\u003c\/p\u003e\u003ch3\u003e✔ Why a Wet (Greaseable) Bolt\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInternal grease passage feeds lubricant directly to the bushing surface\u003c\/li\u003e\n\u003cli\u003eExtends bushing service life vs. dry bolts — less squeal, less wear\u003c\/li\u003e\n\u003cli\u003eAllows scheduled lubrication without removing the shackle\u003c\/li\u003e\n\u003cli\u003eStandard upgrade over plain (dry) shackle hardware on trailers driven loaded\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e🔄 Cross-References\u003c\/h3\u003e\u003cp\u003eTRP SHB-91635-LUBE | SHB-91635 LUBE | SHB91635LUBE | Rockwell American 91635BZ | 14066 | 166079 | greaseable shackle bolt 9\/16-18 x 3-1\/2 wet | trailer leaf spring shackle hardware\u003c\/p\u003e\u003chr\u003e\u003cp\u003e📞 \u003cstrong\u003eQuestions? Call or text AAA Trailer: \u003ca href=\"tel:5172251991\"\u003e517-225-1991\u003c\/a\u003e\u003c\/strong\u003e | \u003ca href=\"https:\/\/aaatrailer.com\"\u003eAAATrailer.com\u003c\/a\u003e — Same-day shipping from Howell, MI on in-stock orders. 1000s of trailer parts in stock, trusted 20+ years.\u003c\/p\u003e","brand":"Detroit Hitch","offers":[{"title":"Default Title","offer_id":52802351137077,"sku":"854-7236KIT","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/9144\/0181\/files\/9-16-x-3-1-2-greaseable-wet-shackle-bolt-trailer-leaf-s-sq.jpg?v=1785245733","url":"https:\/\/aaatrailer.com\/products\/9-16-x-3-1-2-greaseable-wet-shackle-bolt-trailer-leaf-springs","provider":"AAA Trailer","version":"1.0","type":"link"}