Best body bolts in 2026

body bolts
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Keeping your vehicle’s body panels secure requires reliable fasteners. We evaluated body bolts for thread accuracy, material durability, and compatibility with classic and modern GM trucks. This list highlights kits that prevent rattles and ensure proper fitment for hoods, fenders, and bumpers.
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22-23€
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Best Overall
GM 12-Piece Door Hinge Body Bolt Hardware Kit (5/16-18 x 1 3/16") FITS: Classic Chevrolet, Buick, Oldsmobile, Pontiac, Cadillac, GMC Trucks, GM A | B | C | D | E | F | G Body Cars & Trucks

GM 12-Piece Door Hinge Body Bolt Hardware Kit (5/1...

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CSMATEYEAH - CSMATEYEAH 100 Pcs M6-1.0 Body Bolts U Nuts Kits, Bumper Fender Liner Push Pull Metal Rust-Resistant U Retainer, Universal for Most Cars Fastening Accessories, Steel, Black
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  • [Widely Used]: The u clips are widely used for radiator yoke trim panel door trim door panel bumper car fender flare side skirt grille wheel well air intake engine cover mud flap and splash guard shield retainers rivet clips replacement.
  • [100pcs Multipurpose Bolts]: M6-1.0 x 25mm, Hex Head Sems, 17mm (21/32") Washer O.D., 10mm Hex, Phosphate, Class 9.8, Replaces GM 11503834, 20351035
C$21.99
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Kichvoe - Kichvoe 10pcs M8 Car Bolt Kit U-Shaped Clips M8 Nuts for Automotive Body Fastening
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  • Multipurpose use: ideal for various automotive body fastening applications, these fasteners provide a versatile way for securing different components,automotive anchor and bolts,bumper fasteners for cars
  • Precision engineering: each component undergoes precise machining to ensure accurate dimensions, making installation and easy vehicle body,car body screws kit,car bolt kit
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Lainballow - Lainballow 120 Pcs M6-1.0 Bolts & U-Nuts Kits, Engine Under Cover Splash Shield Guard Body Bolts, Carbon Steel Bumper Fender Fastener Rivet Clips for Engine Splash Shield Guard Bumper Fender Hardware
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  • HIGH QUANTITY AND DURABLE SET - The engine splash shield bolts hardware kit includes 60 U-nuts and 60 body bolts with built-in fender washers, which is sufficient quantity to meet the needs of daily maintenance, replacement or bulk installation
  • ACCURATE FITMENT - Body bolts are 18x21.6mm (0.71x0.85 inches), hex head design with 18mm washers to provide a stable fit, and extruded U-nuts are 26x13x9mm (1x0.51x0.35 inches) to ensure compatibility with most automotive, motorcycle, and general mechanical components
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Generic - (20) 5/16-18 x 1" Interior | Exterior | Engine Bay | Chassis | Body Bolts (FITS: Classic, Antique GM Chevrolet, Buick, Oldsmobile, Pontiac, Cadillac, GMC Trucks, A | B | C | D | E | F | G Body Cars)
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  • Direct replacement for GM Part# 3846202, 12337916, 15598757 and 15686047. Sold as a set of (20). Black phosphate finish.
  • The most common place these are used is on the front end, starting with the fenders, header panel, grille and bumpers. Depending on your vehicle, they are also widely used on other body panels, under the hood and the interior.
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Rexka - Rexka 15 Sets M8-1.25 Extruded U Nut & Body Bolts Screw Kits for GM Ford Chevy Buick GMC Cadilac Hummer Oldsmobile Pontiac Saturn Cars Trucks
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  • ⭐ GM Ford M8-1.25 Extruded U Nut & Body Bolts Screw Kits - Multi Purpose
  • ✔ 15pcs Multi Purpose Extruded U Nuts. Phosphate. M8-1.25 Screw Size, Panel Range: .80mm-4.50mm (.030"-.170"), Center of Hole to Edge: 20mm (13/16"). Replaces GM: 11500661, 11503317, 11516150, Ford: N623343-S2 & S100
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Our Expert Verdict: body bolts

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These body bolts offer reliable fitment and durability for GM and universal applications. Choose zinc-plated options for exterior durability and verify thread specs before purchase.

Market Overview: body bolts

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The market favors comprehensive kits that include both bolts and U-nuts for complete repair. There is high demand for GM-specific replacements, but universal metric kits remain popular for broader vehicle compatibility.

Buying Guide: body bolts

AI
Select body bolts by matching thread size, length, and head style to your vehicle's mounting points. Prioritize zinc-plated steel for exterior use to resist rust and ensure long-term panel stability.

Selection Criteria

We prioritized kits with accurate thread pitches, corrosion-resistant coatings, and positive user feedback on fitment. Value was determined by bolt count and inclusion of matching U-nuts.

Budget Advice

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Entry-level kits start low for small repairs. Mid-range options offer better quantity and plating. Premium sets provide extensive assortments for full body restoration projects.

Conclusion: body bolts

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Don't let loose panels cause noise or damage. Review our detailed comparisons to find the exact bolt size and kit quantity you need. Click through to see full specs and pricing for each recommended option.

Frequently Asked Questions

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Body bolts typically feature a wider washer head or integrated washer to distribute pressure evenly over sheet metal, preventing damage and reducing vibration noise compared to standard hex bolts.
Zinc plating offers better corrosion resistance for exterior parts exposed to moisture. Black oxide is often used for interior or engine bay components where appearance matters less than low friction.
Most classic GM vehicles use 5/16-18 threads. Modern universal kits often include M6 or M8 metrics. Always measure your existing bolt or consult your vehicle's service manual to ensure correct pitch and length.

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Why Trust This List?

Data-Driven Selection

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Objective criteria: rating, price, popularity

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GM 12-Piece Door Hinge Body Bolt Hardware Kit (5/16-18 x 1 3/16") FITS: Classic Chevrolet, Buick, Oldsmobile, Pontiac, Cadillac, GMC Trucks, GM A | B | C | D | E | F | G Body Cars & Trucks
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GM 12-Piece Door Hinge Body Bolt Hardwar...

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