{"product_id":"heli-coil-at3591-3c285-screw-locking-insert-10-32-unf","title":"Heli-coil AT3591-3C285 Screw-locking Insert 10-32 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELI-COIL AT3591-3C285 is a screw-locking helical coil threaded insert designed to create strong, vibration-resistant internal threads in a tapped hole. Manufactured from Grade 304 stainless steel with a bright finish, this insert accepts a 10-32 UNF fastener and provides a 1-1\/2D length-to-diameter ratio. The tangless design eliminates the need for tang removal after installation, reducing assembly steps and the risk of loose tang fragments in the assembly. It delivers a maximum locking torque of 13 inch-pounds and a minimum breakaway torque of 2 inch-pounds, making it well-suited for applications where fastener retention under vibration or repeated removal is critical.\u003c\/p\u003e\n\u003cp\u003eThis insert is used in metalworking, MRO, aerospace, automotive, and general industrial assembly where stripped, damaged, or weak parent-material threads must be restored or reinforced to full fastener load capacity. The 10-32 UNF thread is a common size in instrument panels, light structural assemblies, and equipment enclosures. Installation is performed with a standard helical insert installation tool sized for 10-32, using a pre-tapped hole prepared to the appropriate HELI-COIL tap specification. The tangless design is compatible with both manual and power installation drivers used in production environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTangless design eliminates post-installation tang removal and prevents fragment contamination\u003c\/li\u003e\n  \u003cli\u003eGrade 304 stainless steel construction resists corrosion in demanding service environments\u003c\/li\u003e\n  \u003cli\u003e10-32 UNF thread with 1-1\/2D length-to-diameter ratio for balanced pull-out strength and thread engagement\u003c\/li\u003e\n  \u003cli\u003eMaximum locking torque of 13 inch-pounds provides positive fastener retention under vibration\u003c\/li\u003e\n  \u003cli\u003eMinimum breakaway torque of 2 inch-pounds allows controlled fastener removal without galling\u003c\/li\u003e\n  \u003cli\u003eBright finish, 6-7\/8 free coils, overall insert length of 0.285 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation insert for any application requiring a 10-32 UNF screw-locking helical coil insert in a parent material tapped to the corresponding HELI-COIL insert tap specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist, assembler, or maintenance technician using a pre-tapped hole prepared with the correct HELI-COIL 10-32 STI tap. De-energize and lock out any equipment before performing thread repair on in-service assemblies. Use the appropriate tangless installation tool to drive the insert to the specified depth without over-driving. Verify thread engagement with the mating fastener before returning the assembly to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 10-32 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Insert Length\u003c\/strong\u003e: 0.285 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength to Diameter Ratio\u003c\/strong\u003e: 1-1\/2D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Outside Diameter\u003c\/strong\u003e: 0.236 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Outside Diameter\u003c\/strong\u003e: 0.256 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Free Coils\u003c\/strong\u003e: 6-7\/8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Locking Torque\u003c\/strong\u003e: 13 inch-pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Breakaway Torque\u003c\/strong\u003e: 2 inch-pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 304\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTang\u003c\/strong\u003e: Tangless\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.001 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HELI-COIL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: AT3591-3C285\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":52021461713202,"sku":"AT3591-3C285","price":106.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c56b27eb9c5d72e23a1bb2bd4384d432.jpg?v=1790012531","url":"https:\/\/voomisupply.com\/products\/heli-coil-at3591-3c285-screw-locking-insert-10-32-unf","provider":"Voomi Supply","version":"1.0","type":"link"}