{"product_id":"316-stainless-steel-rod-end-bearing-male-female-ball-joint-metric-thread-6-20mm","title":"316 Stainless Steel Rod End Bearing Male Female Ball Joint 6–20mm","description":"\n\u003ch2\u003e316 Stainless Steel Rod End Bearing — Male \u0026amp; Female Ball Joint, Metric Thread (6–20mm)\u003c\/h2\u003e\n\u003cp\u003eBuilt for demanding environments, this precision-engineered \u003cstrong\u003e316 stainless steel rod end bearing\u003c\/strong\u003e (fish eye bearing) delivers smooth angular movement, superior corrosion resistance, and maintenance-free operation. Available in metric thread sizes from \u003cstrong\u003e6mm to 20mm\u003c\/strong\u003e with both male (right-hand \/ left-hand) and female options in the SA\/SI\/T\/K series, it's the go-to choice for marine, industrial, food processing, and automation applications.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial — Body \u0026amp; Ball:\u003c\/strong\u003e AISI 316 stainless steel (Cr: 16–18%, Ni: 10–14%, Mo: 2–3%) — outstanding chloride and saltwater corrosion resistance, outperforming 304 grade\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiner:\u003c\/strong\u003e PTFE-bronze sintered liner — self-lubricating and maintenance-free\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e Ball HRC 50–55; Housing HRC 45–50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Finish:\u003c\/strong\u003e Ra ≤ 0.8 µm (P0\/P6 tolerance)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAngular Range:\u003c\/strong\u003e ±15° tilt + 360° rotation for misalignment compensation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e –20°C to +120°C (continuous operation)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e Metric — right-hand and left-hand threads available (TK Series)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e M6, M8, M10, M12, M14, M16, M18, M20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e PHSA \/ POSA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoatings:\u003c\/strong\u003e Nickel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e RoHS — no hazardous materials\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePacking:\u003c\/strong\u003e 1 pc rod end bearing per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCore Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSuperior Corrosion Resistance:\u003c\/strong\u003e Molybdenum additive prevents pitting in saltwater, acids, alkalis, and chemical environments\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSelf-Lubricating PTFE Liner:\u003c\/strong\u003e Eliminates the need for greasing — ideal for food, cleanroom, and medical applications\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eAngular Compensation:\u003c\/strong\u003e ±15° tilt combined with 360° rotation corrects shaft misalignment with ease\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eHigh Precision:\u003c\/strong\u003e P0\/P6 tolerance grade and Ra ≤ 0.8 µm surface finish ensure accurate, consistent performance\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eMaintenance-Free:\u003c\/strong\u003e No periodic greasing required, reducing downtime and operating costs\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eLong Service Life:\u003c\/strong\u003e High wear resistance in corrosive and high-load conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMarine hardware, boat rudders, and winches\u003c\/li\u003e\n  \u003cli\u003eChemical pumps, valves, and mixers\u003c\/li\u003e\n  \u003cli\u003eFood processing conveyors and packaging machines\u003c\/li\u003e\n  \u003cli\u003eOutdoor automation systems and solar trackers\u003c\/li\u003e\n  \u003cli\u003eMedical equipment and laboratory devices\u003c\/li\u003e\n  \u003cli\u003eAerospace components and precision instruments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e316 vs 304 Stainless Steel — Why It Matters\u003c\/h3\u003e\n\u003cp\u003eThe addition of \u003cstrong\u003emolybdenum (2–3%)\u003c\/strong\u003e in 316 stainless steel dramatically improves resistance to pitting corrosion in saltwater, chloride-rich, and acidic environments where standard 304 grade would degrade. For marine, offshore, and chemical applications, 316 is the clear choice for long-term reliability.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Also Need\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories — Anti-Loosening Left Hand Thread Replacement Parts\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-20mm-diamond-flat-grinding-wheel-dry-and-wet-use-heavy-duty-concrete-grinder-wheel-blue-vacuum-brazed\"\u003e10\/20mm Diamond Flat Grinding Wheel — Dry and Wet Use Heavy Duty Concrete Grinder Wheel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between the SA and SI series rod end bearings?\u003c\/h4\u003e\n\u003cp\u003eA: The SA series (PHSA) typically refers to male thread rod end bearings, while the SI series (POSA) refers to female thread rod end bearings. Both are available in right-hand and left-hand thread configurations across the M6–M20 size range. Please select the series and thread direction that matches your application before ordering.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this 316 stainless steel rod end bearing require regular lubrication?\u003c\/h4\u003e\n\u003cp\u003eA: No. The PTFE-bronze sintered liner is self-lubricating, meaning no periodic greasing is required. This makes it especially well-suited for food processing, medical, and cleanroom environments where lubricant contamination must be avoided.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this rod end bearing suitable for marine and saltwater environments?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The AISI 316 stainless steel construction — with its molybdenum content (2–3%) — provides superior resistance to chloride-induced pitting corrosion, making it an excellent choice for marine hardware, boat rudders, offshore equipment, and other saltwater-exposed applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What sizes are available, and how do I choose the right one?\u003c\/h4\u003e\n\u003cp\u003eA: This rod end bearing is available in metric thread sizes M6, M8, M10, M12, M14, M16, M18, and M20. Choose the size that matches your existing rod or linkage thread diameter. Also select whether you need a male or female connection, and right-hand or left-hand thread direction, from the product variant options.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the SA and SI series rod end bearings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The SA series (PHSA) typically refers to male thread rod end bearings, while the SI series (POSA) refers to female thread rod end bearings. Both are available in right-hand and left-hand thread configurations across the M6–M20 size range. Please select the series and thread direction that matches your application before ordering.\"}}, {\"@type\": \"Question\", \"name\": \"Does this 316 stainless steel rod end bearing require regular lubrication?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The PTFE-bronze sintered liner is self-lubricating, meaning no periodic greasing is required. This makes it especially well-suited for food processing, medical, and cleanroom environments where lubricant contamination must be avoided.\"}}, {\"@type\": \"Question\", \"name\": \"Is this rod end bearing suitable for marine and saltwater environments?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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