{"id":13928,"date":"2026-09-29T15:59:56","date_gmt":"2026-09-29T13:59:56","guid":{"rendered":"https:\/\/lubeteam.it\/?post_type=product&#038;p=13928"},"modified":"2026-09-30T12:22:22","modified_gmt":"2026-09-30T10:22:22","slug":"oleo-tecnica-metric-threaded-flanges-with-din-3901-3902-connection","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-metric-threaded-flanges-with-din-3901-3902-connection\/","title":{"rendered":"Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection"},"content":{"rendered":"<h3>General Specifications and Construction Principles<\/h3>\n<p><strong>Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection<\/strong> represent a reference standard for rigid connections in industrial hydraulic systems. Designed for precision coupling, these flanges cover a dimensional range from 1\/2&#8243; to 1&#8243;1\/2. The metric threaded connection, with sizes ranging from M22x1,5 for the most compact models up to M52x2 for larger diameters, ensures stable mechanical fastening while minimising the risk of fluid leakage even in the presence of vibrations or pressure peaks. The geometric design optimises load distribution across the anchoring points, with fastening-hole centre distances (dimension C) calculated to maximise the structural strength of the component.<\/p>\n<h3>Hydraulic Performance: Series 3000<\/h3>\n<p>Series 3000 is engineered for medium- and high-pressure applications, with resistance specifications that vary according to the nominal flange size. For 1\/2&#8243;, 3\/4&#8243; and 1&#8243; diameters, the maximum recommended working pressure reaches 345 Kg\/cm&sup2;. As the diameter increases, the rated parameters adapt to hydraulic tolerances: the 1&#8243;1\/4 size supports up to 276 Kg\/cm&sup2;, while the 1&#8243;1\/2 model is rated for a maximum pressure of 207 Kg\/cm&sup2;. Component weight in this series varies proportionally from 0.25 Kg (model AFS080E) to 1.02 Kg (model AFS106E), providing an excellent balance between mass and hydraulic sealing performance.<\/p>\n<h3>Hydraulic Performance: Series 6000<\/h3>\n<p>For circuits subjected to extreme mechanical and hydraulic stress, Series 6000 provides higher and constant performance. Regardless of nominal size (from 1\/2&#8243; up to 1&#8243;1\/2), all flanges in this family guarantee a maximum recommended working pressure of 414 Kg\/cm&sup2;. External dimensions (dimensions D and F) and thicknesses are increased compared with the equivalent Series 3000 versions to withstand the radial and axial loads generated by very high pressures. One notable model in this series is the 1&#8243;1\/4 AFS404EL13 variant, which differs from the standard AFS404E model in a specific dimensional variation of dimension S (13.5 mm compared with 15 mm) and in the associated UNC screw set. Series 6000 weights range from 0.33 Kg to 2.23 Kg.<\/p>\n<h3>Materials and Supply Designations<\/h3>\n<p>Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection are manufactured in two metallurgical variants to meet different environmental and operating requirements: <strong>S355<\/strong> carbon steel (identified by the AFS prefix) and <strong>AISI316L<\/strong> stainless steel (AFX prefix, ideal for corrosive environments).<br \/> The coding system allows precise configuration at the ordering stage:<\/p>\n<ul>\n<li>The suffix &#8220;E&#8221; (e.g. AFS&#8230;E \/ AFX&#8230;E) indicates the flange only.<\/li>\n<li>The suffix &#8220;EM&#8221; (e.g. AFS&#8230;EM \/ AFX&#8230;EM) identifies the flange complete with metric screws, spring washers and O-Ring.<\/li>\n<li>The suffix &#8220;EU&#8221; (e.g. AFS&#8230;EU \/ AFX&#8230;EU) indicates the kit with UNC screws, spring washers and O-Ring.<\/li>\n<\/ul>\n<p><em>Technical note: UNC screw sets are available exclusively in carbon steel, regardless of the material selected for the flange body. The supplied O-Ring seals follow standard numbering (from 4075 to 4187), selected for exact front-seat compatibility.<\/em><\/p>\n<h3>Summary technical table of the main characteristics of Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection<\/h3>\n<div style=\"width: 100%; overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Feature<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Connection Type<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">DIN 3901-3902<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Available Series<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Series 3000 \/ Series 6000<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Nominal Sizes<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">From 1\/2&#8243; to 1&#8243;1\/2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Construction Materials<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">S355 (Carbon Steel) \/ AISI316L (Stainless Steel)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Max. Pressure Series 3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">From 207 to 345 Kg\/cm&sup2; (depending on size)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Max. Pressure Series 6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414 Kg\/cm&sup2; (constant across all sizes)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Thread Type (Dimension A)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Metric (from M22x1,5 to M52x2)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Fastener Supply Options<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Metric (EM) \/ UNC in carbon steel (EU)<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h3>Product Codes<\/h3>\n<div style=\"width: 100%; overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Base Model (S355)*<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Series<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Size<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Max. Pressure (Kg\/cm&sup2;)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Metric Thread (A)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">O-Ring Type<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Weight (Kg)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS080E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M22x1,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4075<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0.25<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS100E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3\/4&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M30x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0.36<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS102E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M36x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4131<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS104E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">276<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M45x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0.71<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS106E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">207<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M52x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4187<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1.02<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS401E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/2&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M24x1,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4075<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0.33<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS402E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3\/4&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M36x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0.68<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS403E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M42x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4131<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1.03<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS404E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M52x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1.66<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS404EL13<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M52x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4150<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1.66<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">AFS405E<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6000<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1&#8243;1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">414<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M52x2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4187<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2.23<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Designed for high-pressure hydraulic circuits, Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection ensure maximum sealing performance and structural precision. The catalogue includes Series 3000 (with working pressures up to 345 Kg\/cm\u00b2) and Series 6000 (with constant pressure resistance of 414 Kg\/cm\u00b2), covering sizes from 1\/2&#8243; to 1&#8243;1\/2. Manufactured in S355 steel or AISI316L stainless steel, they can be configured as individual components or in complete kits with O-Ring seals and metric or UNC fastening screws.<br \/> The available product codes in the family are: AFS080E, AFS100E, AFS102E, AFS104E, AFS106E, AFS401E, AFS402E, AFS403E, AFS404E, AFS404EL13, AFS405E (for S355 versions, convertible to AFX for AISI316L).<\/p>\n","protected":false},"featured_media":13785,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[106,493,498],"product_tag":[327],"class_list":{"0":"post-13928","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-flanges","7":"product_cat-sae-j518","8":"product_cat-threaded-flanges","9":"product_tag-oleo-tecnica","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v26.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection - LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection. Series 3000 (up to 345 Kg\/cm\u00b2) and 6000 (414 Kg\/cm\u00b2) in S355 and AISI316L. Complete kits.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-metric-threaded-flanges-with-din-3901-3902-connection\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection\" \/>\n<meta property=\"og:description\" content=\"Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection. Series 3000 (up to 345 Kg\/cm\u00b2) and 6000 (414 Kg\/cm\u00b2) in S355 and AISI316L. 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Series 3000 (up to 345 Kg\/cm\u00b2) and 6000 (414 Kg\/cm\u00b2) in S355 and AISI316L. Complete kits.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-metric-threaded-flanges-with-din-3901-3902-connection\/","og_locale":"en_US","og_type":"article","og_title":"Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection","og_description":"Oleo Tecnica Metric Threaded Flanges with DIN 3901-3902 Connection. Series 3000 (up to 345 Kg\/cm\u00b2) and 6000 (414 Kg\/cm\u00b2) in S355 and AISI316L. 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