{"product_id":"brass-zerk-grease-fittings-m6-m8-m10-m12-m14-m16-straight-45-90","title":"Brass Zerk Grease Fittings — M6 to M16, Straight \/ 45° \/ 90°","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBrass Zerk Grease Fittings — Keep Every Bearing and Joint Properly Lubricated\u003c\/h2\u003e\n\u003cp\u003eMechanics, equipment operators, and serious DIYers know the frustration of a seized bearing or a worn joint caused by missed lubrication — often because the original grease fitting was stripped, corroded, or simply the wrong angle to reach. These brass Zerk grease fittings give you a reliable, thread-matched replacement or upgrade for virtually any metric lubrication port on agricultural equipment, automotive chassis, industrial machinery, and workshop tools.\u003c\/p\u003e\n\u003cp\u003eEach set includes brass Zerk grease nipple fittings machined to metric thread standards, available in sizes M6×1mm through M16×1.5mm (approximately 0.24\" to 0.63\" thread diameter). Three head configurations are offered — straight, 45°, and 90° — so you can match the fitting to your access angle. Packages are sold in quantities of 1, 2, or 5 pieces depending on the size selected.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include replacing worn grease nipples on tractor and implement pivot points, installing metric Zerk fittings on trailer axle hubs and suspension joints, and retrofitting lubrication ports on conveyor bearings and industrial gearboxes where standard metric thread grease fittings are required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for metric-threaded grease ports (M6–M16). Fits standard Zerk-style grease gun couplers. Not compatible with imperial (UNF\/UNC) threaded ports without an adapter — verify your thread standard before ordering.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Brass Zerk Grease Fittings\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFull Metric Size Range\u003c\/strong\u003e — Available in M6, M8, M10, M12, M14, and M16 thread diameters with pitch options (1.0mm and 1.25mm) to match your exact metric grease port specification.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eThree Head Angles\u003c\/strong\u003e — Straight, 45°, and 90° configurations let you select the right fitting for tight or recessed lubrication points where a straight nipple won't seat or align properly.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🟡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e — Brass offers natural corrosion resistance compared to standard carbon steel fittings, making these metric grease nipples suitable for moderately humid and outdoor equipment applications.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStandard Zerk Ball-Check Design\u003c\/strong\u003e — The internal spring-loaded ball check valve accepts grease under pressure and seals automatically when the gun coupler is removed, preventing contamination from entering the lubrication point.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Choose packs of 1, 2, or 5 pieces so you can stock exactly what you need for a single repair or keep spares on hand for fleet or equipment maintenance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eDirect Replacement Fit\u003c\/strong\u003e — Thread dimensions conform to standard metric fastener specifications, making these a straightforward replacement for OEM grease fittings on agricultural, automotive, and industrial equipment with metric lubrication ports.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — Brass Zerk Grease Nipple Fittings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFitting Type\u003c\/th\u003e\n\u003ctd\u003eZerk (grease nipple \/ grease fitting)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eMetric (M-series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Thread Sizes\u003c\/th\u003e\n\u003ctd\u003eM6×1mm, M8×1mm, M8×1.25mm, M10×1mm, M12×1mm, M14×1.5mm, M16×1.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Diameter Range\u003c\/th\u003e\n\u003ctd\u003eM6–M16 (approx. 0.24\"–0.63\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Configurations\u003c\/th\u003e\n\u003ctd\u003eStraight, 45°, 90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Quantities\u003c\/th\u003e\n\u003ctd\u003e1 pc, 2 pcs, or 5 pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrease Gun Coupler Compatibility\u003c\/th\u003e\n\u003ctd\u003eStandard Zerk-style coupler (confirm jaw size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Pressure Rating\u003c\/th\u003e\n\u003ctd\u003eSee variant options \/ Contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Applications\u003c\/th\u003e\n\u003ctd\u003eAgricultural equipment, automotive chassis, industrial machinery, conveyor bearings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eNote:\u003c\/strong\u003e M8 is available in two pitches (1.0mm and 1.25mm). Confirm your port pitch with a thread gauge before ordering to ensure a proper fit.\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right thread size for my grease fitting?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the fitting thread to your equipment's grease port thread. Sizes M6 through M16 are available. Use a thread gauge or consult your equipment manual to confirm both diameter and pitch — for example, M8 is offered in both 1.0mm and 1.25mm pitch. In inches, M6 is approximately 0.24\", M8 ≈ 0.31\", M10 ≈ 0.39\", M12 ≈ 0.47\", M14 ≈ 0.55\", and M16 ≈ 0.63\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat angle should I choose — straight, 45°, or 90°?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eChoose a straight fitting when your grease gun coupler has clear, direct access to the port. Use a 45° fitting when the port is partially obstructed or angled. A 90° fitting is typically the right choice when the port faces a surface or is recessed in a way that makes straight or 45° access impractical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these fittings suitable for outdoor or high-moisture environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass is generally more corrosion-resistant than standard carbon steel, making these fittings a practical choice for moderately humid or outdoor equipment. For marine or highly corrosive environments, additional protective measures — such as anti-seize compound on the threads — are typically recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat grease gun coupler is compatible with these Zerk fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese are standard Zerk-style grease nipples and are generally compatible with any standard grease gun coupler designed for Zerk fittings. Confirm that the coupler jaw size matches the fitting head before use. Most standard hydraulic grease gun couplers will fit without modification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow much grease pressure can these fittings handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass Zerk fittings typically handle the pressure range produced by standard hand-operated and pneumatic grease guns used in automotive and agricultural maintenance. For exact pressure ratings specific to your application, please contact us to confirm before use in high-pressure industrial systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these fittings on imperial (UNF\/UNC) threaded ports?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo — these fittings use metric threads (M6–M16) and are not directly compatible with imperial UNF or UNC threaded ports. A thread adapter would be required. Always verify your equipment's thread standard (metric vs. imperial) before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need thread sealant when installing these fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eIn most cases, applying PTFE thread tape or a thread sealant compound is recommended to ensure a leak-free seal, particularly in pressurized lubrication systems. Follow your equipment manufacturer's installation guidelines for best results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your size, angle, and pack quantity above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"M6*1mm (Straight) \/ 5","offer_id":52331572625682,"sku":"GH10228x5","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M8*1mm (Straight) \/ 5","offer_id":52331572658450,"sku":"GH10229x5","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M8*1.25mm (Straight) \/ 5","offer_id":52331572691218,"sku":"GH10230x5","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M10*1mm (Straight) \/ 5","offer_id":52331572723986,"sku":"GH10231x5","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M12*1mm (Straight) \/ 2","offer_id":52331572756754,"sku":"GH10232x2","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M14*1.5mm (Straight) \/ 2","offer_id":52331572789522,"sku":"GH10233x2","price":1.7,"currency_code":"USD","in_stock":true},{"title":"M16*1.5mm (Straight) \/ 1","offer_id":52331572822290,"sku":"GH10234x1","price":1.77,"currency_code":"USD","in_stock":true},{"title":"M6*1mm (45°) \/ 2","offer_id":52331572855058,"sku":"GH10222x2","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M8*1mm (45°) \/ 2","offer_id":52331572887826,"sku":"GH10223x2","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M10*1mm (45°) \/ 2","offer_id":52331572920594,"sku":"GH10224x2","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M6*1mm (90°) \/ 2","offer_id":52331572953362,"sku":"GH10225x2","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M8*1mm (90°) \/ 2","offer_id":52331572986130,"sku":"GH10226x2","price":1.55,"currency_code":"USD","in_stock":true},{"title":"M10*1mm (90°) \/ 2","offer_id":52331573018898,"sku":"GH10227x2","price":1.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of2_28cc1631-b237-448d-ab53-9181f7ba8b39.jpg?v=1781086861","url":"https:\/\/homediyer.com\/products\/brass-zerk-grease-fittings-m6-m8-m10-m12-m14-m16-straight-45-90","provider":"HomeDIYer","version":"1.0","type":"link"}