{"product_id":"rexka-5-16-18-sems-bolts-u-nuts-kit-10-sets-black-phosphate-5-16-x-7-8-captive-washer","title":"Rexka 5\/16-18 SEMS Bolts \u0026 U-Nuts Kit, 10 Sets (Black Phosphate) — 5\/16 x 7\/8 Captive Washer","description":"\u003cp\u003e\u003cstrong\u003eRexka 10 Sets 5\/16 Bolts \u0026amp; U Nuts is a compact fastener kit with ten indented hex head SEMS bolts and ten matching U-nuts designed to replace or reinforce body, trim, and accessory mounting points on GM, Ford, Chrysler, Dodge vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit brings together commonly used 5\/16-18 hardware so you can repair loose panels, reinstall fender liners, secure radiator shrouds, or refit interior and exterior trim without hunting for individual parts. All pieces are finished in black phosphate for basic corrosion resistance and a low-profile, factory-appearing look. The fasteners are sized for broad compatibility across trucks, cars, and SUVs and are convenient for DIY maintenance, collision touch-ups, and garage restoration projects.\u003c\/p\u003e\n\n\u003ch3\u003eWhat exactly is included in this Rexka fastener set?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains 10 indented hex head SEMS body bolts and 10 matching 5\/16-18 U-nuts. Bolts measure 5\/16-18 x 7\/8\" with a 3\/4\" washer outer diameter and a 1\/2\" hex drive, sized to fit common sheet-metal applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e10 indented hex head SEMS bolts, black phosphate finish\u003c\/li\u003e\n  \u003cli\u003eBolt dimensions: 5\/16-18 x 7\/8\"; washer O.D. 3\/4\"; hex 1\/2\"\u003c\/li\u003e\n  \u003cli\u003e10 5\/16-18 U-nuts, black phosphate finish\u003c\/li\u003e\n  \u003cli\u003eEngineered for body panels, radiator shrouds, fender liners, and trim\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will these bolts and U-nuts perform on my vehicle?\u003c\/h3\u003e\n\u003cp\u003eThese fasteners are intended for light- to medium-duty sheet-metal joins typical on automotive bodywork. The SEMS bolt keeps a captive washer for faster installation while the U-nut clips provide secure thread engagement in thin panels. The black phosphate finish offers surface protection and blends with factory hardware.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCaptive washer reduces lost parts and speeds assembly\u003c\/li\u003e\n  \u003cli\u003eU-nuts clip onto panel edges for reliable thread alignment\u003c\/li\u003e\n  \u003cli\u003eSuitable for non-structural body, trim, and accessory mounts\u003c\/li\u003e\n  \u003cli\u003eBlack phosphate finish resists surface rust and looks like OEM hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich areas of a GM, Ford, or Chrysler vehicle typically use these fasteners?\u003c\/h3\u003e\n\u003cp\u003eThese parts match mounting points found on fenders, bumpers, radiator support, air intake ducts, and interior trim panels. They're also useful for securing seat bracket covers, splash shields, and various exterior and engine-bay plastic components. Their dimensions align with many factory clip-and-bolt combinations used across older and newer model years.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFender and wheel well liners, splash shields\u003c\/li\u003e\n  \u003cli\u003eRadiator shrouds and air intake ducts\u003c\/li\u003e\n  \u003cli\u003eExterior trim, bumper brackets, and body panels\u003c\/li\u003e\n  \u003cli\u003eInterior trim panels and light accessory mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install these bolts and U-nuts safely and efficiently?\u003c\/h3\u003e\n\u003cp\u003ePrep the mating surfaces by cleaning away rust, dirt, or old sealant. Push the U-nut onto the panel edge or hole so the stud aligns, then thread the SEMS bolt through the component and into the U-nut until snug; avoid over-torquing thin metal. Use a 1\/2\" socket or driver for the hex head and apply thread locking compound only where recommended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClean mating surfaces before installation\u003c\/li\u003e\n  \u003cli\u003eClip U-nut to panel edge, align stud, hand-start bolt threads\u003c\/li\u003e\n  \u003cli\u003eUse a 1\/2\" socket; tighten until secure but not over-torqued\u003c\/li\u003e\n  \u003cli\u003eApply thread locker only if manufacturer guidance requires it\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Rexka fastener kit is made for mechanics, body shops, and DIYers who need a small, ready supply of common 5\/16-18 bolts and U-nuts for maintenance, collision repair, and trim reattachment on GM, Ford, Chrysler, Dodge vehicles. It’s ideal when you want a compact, OEM-style replacement set that saves time sourcing individual fasteners and supports quick fixes across interior, exterior, and engine-bay applications.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these bolts compatible with OEM fasteners?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the 5\/16-18 size and SEMS configuration match many OEM clip-and-bolt mounting points on GM, Ford, and Chrysler vehicles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use these on exterior body panels?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, they are suitable for exterior trim, fender liners, and radiator shrouds; avoid over-torquing thin sheet metal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Rexka","offers":[{"title":"Default Title","offer_id":48087101407390,"sku":"B0D7CRSW3S","price":30.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/rexka-front-packaging-bolts-unuts.jpg?v=1785916498","url":"https:\/\/northtrailauto.ca\/products\/rexka-5-16-18-sems-bolts-u-nuts-kit-10-sets-black-phosphate-5-16-x-7-8-captive-washer","provider":"North Trail Auto","version":"1.0","type":"link"}