{"product_id":"metal-expansion-petal-screws-jack-nuts-10-piece-home-automotive","title":"10-Piece Metal Expansion Petal Screws | Home \u0026 Auto Bolts","description":"\n\u003ch2\u003e10-Piece Metal Expansion Petal Bolts \u0026amp; Screws — Home, Automotive \u0026amp; Commercial Use\u003c\/h2\u003e\n\u003cp\u003eMeet the fastener that does the heavy lifting. This \u003cstrong\u003e10-piece set of metal expansion screws (jack nuts)\u003c\/strong\u003e features a unique four-petal expansion structure that grips walls, panels, and surfaces with remarkable holding power. Whether you're mounting fixtures in your home, securing trim in a sedan or SUV, or installing components in an RV or commercial vehicle, these expansion bolts deliver consistent, vibration-resistant performance every time.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose These Expansion Petal Bolts?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced Grip via Petal Design:\u003c\/strong\u003e The distinctive petal-shaped expansion structure maximizes friction against wall and panel surfaces, dramatically reducing the risk of loosening over time — even in high-vibration environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality Metal Construction:\u003c\/strong\u003e Built with a balanced hardness-to-toughness ratio, these jack nuts resist deformation under significant stress, making them ideal for demanding household and automotive applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick \u0026amp; Easy Assembly:\u003c\/strong\u003e Pre-matched screw system means no excessive torque required — installations are faster and simpler whether you're doing car maintenance or a home DIY project.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Wall \u0026amp; Panel Compatibility:\u003c\/strong\u003e Adjustable expansion range fits standard drywall, automotive panels, and more — perfect for supporting lighting fixtures, trim, and other components in diverse settings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong-Term Stability:\u003c\/strong\u003e Four-petal even load distribution provides vibration resistance ideal for HVAC units, power tools, and vehicle interiors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMetal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eM425 Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~0.8 × 0.8 × 2.5 cm (0.31 × 0.31 × 0.98 in) | Weight: 6g each\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eM525 Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~1.0 × 1.0 × 2.5 cm (0.39 × 0.39 × 0.98 in) | Weight: 7g each\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 × Expansion Screws\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHome drywall installations (lighting, shelves, fixtures)\u003c\/li\u003e\n  \u003cli\u003eAutomotive interiors — sedans, SUVs, RVs, commercial vehicles\u003c\/li\u003e\n  \u003cli\u003eHVAC and power tool mounting\u003c\/li\u003e\n  \u003cli\u003eGeneral woodworking and DIY projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e10 × Metal Expansion Petal Screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to different monitor settings, actual color may vary slightly from images. Please allow ±1–2 cm measurement tolerance due to manual measuring.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/calligraphy-fountain-pen-0-38mm-fine-nib-gold-trim-gift-pen\"\u003e0.38mm Fine Nib Calligraphy Fountain Pen | Gold Trim Gift\u003c\/a\u003e — great for labeling and DIY project planning\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/im-fine-funny-sarcastic-waterproof-laptop-stickers-pvc-glossy\"\u003e\"I'M Fine\" Funny Sarcastic Waterproof Stickers – PVC\u003c\/a\u003e — fun accessories for your workspace\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety \u0026amp; Standards Reference\u003c\/h3\u003e\n\u003cp\u003eFor guidelines on safe use of fasteners and hardware in home and automotive applications, refer to the U.S. Consumer Product Safety Commission (CPSC) for product safety standards and best practices.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Banjo-Kazooie%3A_Nuts_%26_Bolts\" target=\"_blank\" rel=\"noopener\"\u003eBanjo-Kazooie: Nuts \u0026amp; Bolts\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What are expansion petal bolts (jack nuts) used for?\u003c\/h4\u003e\n\u003cp\u003eA: Expansion petal bolts, also called jack nuts, are fasteners designed to provide a secure anchor point in thin or hollow materials such as drywall, sheet metal, and automotive panels. Their four-petal expanding design grips the back of the surface when tightened, making them ideal for home fixtures, car interior trim, RV installations, and commercial applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What sizes are included in this 10-piece expansion screw set?\u003c\/h4\u003e\n\u003cp\u003eA: This set is available in M425 (approx. 0.8 × 0.8 × 2.5 cm) and M525 (approx. 1.0 × 1.0 × 2.5 cm) sizes. Each size is designed to accommodate different panel thicknesses and load requirements for home and automotive use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these expansion screws suitable for automotive use in sedans and SUVs?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! These metal expansion petal screws are specifically designed for versatile use including sedans, SUVs, RVs, and commercial vehicles. Their vibration-resistant, four-petal structure ensures a reliable, long-lasting connection even in high-vibration automotive environments.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need special tools to install these expansion bolts?\u003c\/h4\u003e\n\u003cp\u003eA: No special tools are required. The pre-matched screw system is designed for quick, easy installation without excessive torque. A standard screwdriver is typically all you need, making these expansion bolts beginner-friendly for DIY home and automotive projects.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What are expansion petal bolts (jack nuts) used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Expansion petal bolts, also called jack nuts, are fasteners designed to provide a secure anchor point in thin or hollow materials such as drywall, sheet metal, and automotive panels. 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