{"product_id":"pentair-5-16-18-4-prong-t-nut","title":"Pentair 5\/16-18\" 4 Prong T-Nut","description":"\u003cp data-path-to-node=\"0\"\u003eThe Pentair 5\/16-18\" 4-Prong T-Nut (part number 155109 or 155109Z) is a specialized mechanical fastening hardware component engineered exclusively to create a flush, internal threaded anchor point within the structural composite or molded plastic shells of Pentair pool and spa equipment assemblies. Manufactured from high-strength, corrosion-resistant coated steel, this heavy-duty nut features a flat circular flange base integrated with a 1\/2-inch long hollow barrel containing internal 5\/16\"-18 Unified Coarse (UNC) threads. Its primary operational role is to sink into a pre-drilled pilot hole on the hidden side of an equipment housing, where its four sharp, parallel-molded prongs bite deeply into the surrounding polymer matrix to securely lock the hardware in place.\u003c\/p\u003e\n\u003cp data-path-to-node=\"1\"\u003eBy counter-anchoring into the substrate material, the prongs prevent the nut from spinning, backing out, or shifting out of alignment when adjacent mounting bolts are torqued down, providing a robust metal-on-metal connection that eliminates localized plastic thread shearing. This high-tension locking interface ensures that external structural components, bracket frames, or equipment panels remain rigidly secured to the equipment pad baseline, allowing the main assembly to safely handle turbulent water circulation velocities and continuous internal vibration surges without loosening over time. Engineered to endure a long service life in demanding outdoor equipment pad environments and humid pump rooms, its protective coating resists material fatigue, rusting, and chemical degradation from occasional exposure to pool sanitizers like chlorine and bromine. Due to its compact, ultra-low profile steel sheet geometry, this individual 4-prong T-nut carries a nominal product and shipping weight of approximately \u003cb data-path-to-node=\"1\" data-index-in-node=\"1019\"\u003e0.01 to 0.02 pounds\u003c\/b\u003e (about 0.16 to 0.32 ounces).\u003c\/p\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53416228126831,"sku":"155109Z","price":3.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/155109__87311.jpg?v=1782746182","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-5-16-18-4-prong-t-nut","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}