{"id":13276,"date":"2026-07-30T11:05:20","date_gmt":"2026-07-30T09:05:20","guid":{"rendered":"https:\/\/lubeteam.it\/prodotto\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/"},"modified":"2026-08-05T10:49:58","modified_gmt":"2026-08-05T08:49:58","slug":"stauff-hexagon-socket-head-cap-screw-type-is-standard-series","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/","title":{"rendered":"STAUFF Hexagon Socket Head Cap Screw (Type IS &#8211; Standard Series)"},"content":{"rendered":"<p>The STAUFF Hexagon Socket Head Cap Screws (Type IS &#8211; Standard Series) are a high-precision fastening solution developed specifically for clamping systems and pipe clamp installations in the hydraulic sector. Designed in strict compliance with the construction requirements of DIN 3015, Part 1, these screws ensure robust assembly and reliable alignment of Standard Series components. The head geometry and hexagon socket design are manufactured in strict accordance with the international standards established by ISO 4762, as well as the North American ANSI\/ASME B18.3 technical specifications, ensuring full dimensional compatibility with standardised tightening tools and optimal force transmission during installation.<\/p>\n<h3>Installation Guidelines and Compatibility<\/h3>\n<p>From an operational installation perspective, the STAUFF Hexagon Socket Head Cap Screws (Type IS &#8211; Standard Series) are subject to clear and binding specifications for correct structural assembly. The technical data explicitly state that the dimensions listed in the catalogue apply exclusively when the screws are used without the upper Type DP cover plate. Furthermore, it is a fundamental system requirement that these Type IS hexagon socket head cap screws are used in combination with the dedicated Type US washers, which are available separately to complete the fastening assembly. Compliance with these parameters ensures the integrity of the clamp and the safety of the entire hydraulic fastening assembly.<\/p>\n<h3>Dimensional Specifications and Threads<\/h3>\n<p>To meet the different requirements of international markets and a wide range of system specifications, these fastening elements are supplied with two main thread options. The first option features an ISO metric thread, with dimensions ranging from M6 x 20 to M6 x 110. This dimensional range fully covers the requirements of all STAUFF Groups, from Group 1 to Group 8, corresponding respectively to DIN Groups 0 to 8. Alternatively, the Unified Coarse (UNC) thread is fully supported and available, with lengths ranging from 1\/4-20 UNC x 3\/4 to a maximum size of 1\/4-20 UNC x 4-3\/8. The availability of both thread types in the catalogue ensures flexible integration into both European metric systems and installations designed according to imperial standards.<\/p>\n<h3>Construction Features and Materials<\/h3>\n<p>The Standard Series fastening components are engineered to withstand a wide range of environmental conditions and are therefore manufactured from three main material categories, each identified by a specific STAUFF code. The standard base material, identified by the suffix W3, is carbon steel protected by a zinc\/nickel-plated surface treatment. For system applications requiring greater protection, the W4 option is available in V2A stainless steel, corresponding to grades 1.4301 and 1.4305, commonly known as AISI 304 and AISI 303. Finally, for the most critical operating conditions, the W5 variant is manufactured from V4A stainless steel, corresponding to grades 1.4401 and 1.4571, equivalent to AISI 316 and AISI 316 Ti. Alternative materials and dedicated surface finishes are available upon request.<\/p>\n<h3>Summary Technical Table of the Main Features of the STAUFF Hexagon Socket Head Cap Screw (Type IS &#8211; Standard Series)<\/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;\">Product Type<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Hexagon Socket Head Cap Screw (Type IS)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Reference Series<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Standard Series (in accordance with DIN 3015, Part 1)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Screw Standard Compliance<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">ISO 4762 or ANSI\/ASME B18.3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Compatible STAUFF \/ DIN Groups<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1 to 8 (STAUFF) \/ 0 to 8 (DIN)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Available Threads<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">ISO Metric (M6) \/ Unified Coarse Thread (1\/4-20 UNC)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Material W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Carbon steel, zinc\/nickel-plated<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Material W4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">V2A stainless steel (1.4301\/1.4305 &#8211; AISI 304\/303)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Material W5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">V4A stainless steel (1.4401\/1.4571 &#8211; AISI 316\/316 Ti)<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Installation Requirements<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Use with Type US washers. Values apply when used without a Type DP cover plate.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/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;\">STAUFF Group<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">DIN Group<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Metric Size<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">Metric Ordering Code (Material W3)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">UNC Size<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #F2F2F2;\">UNC Ordering Code (Material W3)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1 \/ 1A<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0 \/ 1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M6 x 20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-M6x20-W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/4-20 UNC x 3\/4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-1\/4-20UNCx3\/4-W3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M6 x 25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-M6x25-W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/4-20 UNC x 1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-1\/4-20UNCx1-W3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M6 x 30<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-M6x30-W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/4-20 UNC x 1-1\/8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-1\/4-20UNCx1-1\/8-W3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M6 x 35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-M6x35-W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/4-20 UNC x 1-3\/8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-1\/4-20UNCx1-3\/8-W3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M6 x 50<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-M6x50-W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/4-20 UNC x 2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-1\/4-20UNCx2-W3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M6 x 60<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-M6x60-W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/4-20 UNC x 2-1\/2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-1\/4-20UNCx2-1\/2-W3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M6 x 90 (Upon request)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-M6x90-W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/4-20 UNC x 3-3\/8 (Upon request)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-1\/4-20UNCx3-3\/8-W3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M6 x 110 (Upon request)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-M6x110-W3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1\/4-20 UNC x 4-3\/8 (Upon request)<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">IS-1\/4-20UNCx4-3\/8-W3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"\">Designed in accordance with DIN 3015, Part 1 and ISO 4762,<\/span><span class=\"\"> the STAUFF Hexagon Socket Head Cap Screws (Type IS &#8211; Standard Series) ensure secure fastening of hydraulic components.<\/span><span class=\"\"> Intended exclusively for use with Type US washers and without a Type DP cover plate,<\/span><span class=\"\"> they are available with ISO metric or UNC threads.<\/span><span class=\"\"> Available in carbon steel (W3) or stainless steel (W4,<\/span><span class=\"\"> W5).<\/span><span class=\"\"> The available product codes are:<\/span><span class=\"\"> IS-M6x20-W3,<\/span><span class=\"\"> IS-M6x25-W3,<\/span><span class=\"\"> IS-M6x30-W3,<\/span><span class=\"\"> IS-M6x35-W3,<\/span><span class=\"\"> IS-M6x50-W3,<\/span><span class=\"\"> IS-M6x60-W3,<\/span><span class=\"\"> IS-M6x90-W3,<\/span><span class=\"\"> IS-M6x110-W3,<\/span><span class=\"\"> IS-1\/4-20UNCx3\/4-W3,<\/span><span class=\"\"> IS-1\/4-20UNCx1-W3,<\/span><span class=\"\"> IS-1\/4-20UNCx1-1\/8-W3,<\/span><span class=\"\"> IS-1\/4-20UNCx1-3\/8-W3,<\/span><span class=\"\"> IS-1\/4-20UNCx2-W3,<\/span><span class=\"\"> IS-1\/4-20UNCx2-1\/2-W3,<\/span><span class=\"\"> IS-1\/4-20UNCx3-3\/8-W3,<\/span><\/p>\n","protected":false},"featured_media":12646,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[101,470],"product_tag":[281],"class_list":{"0":"post-13276","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-clamps","7":"product_cat-din-3015-clamps","8":"product_tag-stauff","10":"first","11":"instock","12":"shipping-taxable","13":"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>STAUFF Hexagon Socket Head Cap Screw (Type IS - Standard Series) \u2013 LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"STAUFF Hexagon Socket Head Cap Screw (Type IS - Standard Series), compliant with DIN 3015, Part 1. Conforms to ISO 4762\/ASME B18.3. M6 and UNC threads. W3, W4 and W5 materials.\" \/>\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\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"STAUFF Hexagon Socket Head Cap Screw (Type IS - Standard Series)\" \/>\n<meta property=\"og:description\" content=\"STAUFF Hexagon Socket Head Cap Screw (Type IS - Standard Series), compliant with DIN 3015, Part 1. Conforms to ISO 4762\/ASME B18.3. M6 and UNC threads. W3, W4 and W5 materials.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lubeteam.it\/en\/product\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/\" \/>\n<meta property=\"og:site_name\" content=\"LubeTeam Hydraulic\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/lubeteam\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-05T08:49:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/lubeteam.it\/wp-content\/uploads\/2026\/07\/Vite-a-Testa-Cilindrica-con-Cava-Esagonale-Stauff-Tipo-IS-Serie-Standard.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/lubeteam.it\/en\/product\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/\",\"url\":\"https:\/\/lubeteam.it\/en\/product\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/\",\"name\":\"STAUFF Hexagon Socket Head Cap Screw (Type IS - Standard Series) \u2013 LubeTeam Hydraulic\",\"isPartOf\":{\"@id\":\"https:\/\/lubeteam.it\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/lubeteam.it\/en\/product\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/lubeteam.it\/en\/product\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/lubeteam.it\/wp-content\/uploads\/2026\/07\/Vite-a-Testa-Cilindrica-con-Cava-Esagonale-Stauff-Tipo-IS-Serie-Standard.webp\",\"datePublished\":\"2026-07-30T09:05:20+00:00\",\"dateModified\":\"2026-08-05T08:49:58+00:00\",\"description\":\"STAUFF Hexagon Socket Head Cap Screw (Type IS - Standard Series), compliant with DIN 3015, Part 1. 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Conforms to ISO 4762\/ASME B18.3. M6 and UNC threads. W3, W4 and W5 materials.","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\/stauff-hexagon-socket-head-cap-screw-type-is-standard-series\/","og_locale":"en_US","og_type":"article","og_title":"STAUFF Hexagon Socket Head Cap Screw (Type IS - Standard Series)","og_description":"STAUFF Hexagon Socket Head Cap Screw (Type IS - Standard Series), compliant with DIN 3015, Part 1. Conforms to ISO 4762\/ASME B18.3. M6 and UNC threads. 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