{"id":13293,"date":"2026-07-30T11:05:46","date_gmt":"2026-07-30T09:05:46","guid":{"rendered":"https:\/\/lubeteam.it\/prodotto\/stauff-hexagon-socket-head-cap-screw-type-is-heavy-series\/"},"modified":"2026-08-07T09:21:36","modified_gmt":"2026-08-07T07:21:36","slug":"stauff-hexagon-socket-head-cap-screw-type-is-heavy-series","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/stauff-hexagon-socket-head-cap-screw-type-is-heavy-series\/","title":{"rendered":"STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series)"},"content":{"rendered":"

Reference Standards and Compliance<\/h3>\n

The STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series)<\/strong> is a mechanical fastening component engineered for Heavy Series pipework systems in accordance with DIN 3015, Part 2. It is manufactured in strict compliance with the international ISO 4762 standard and ANSI\/ASME B18.3, ensuring absolute dimensional accuracy and reliability in high-pressure hydraulic applications.<\/p>\n

Construction and Dimensional Features<\/h3>\n

The design of this screw type (Socket Cap Screw Type IS) is intended for a specific application: the dimensions listed in the catalogue apply exclusively when the component is used without cover plates. The dimensional range covers STAUFF Groups 3S to 6S, corresponding to DIN Groups 1 to 4. Diameters and lengths are available with either ISO metric threads, ranging from M10x30 to M12x80, or Unified Coarse UNC threads, ranging from 3\/8-16 UNC x 1 to 7\/16-14 UNC x 3-1\/4, allowing integration into a wide variety of fastening configurations.<\/p>\n

Materials and Surface Treatments<\/h3>\n

To meet different mechanical strength and corrosion-protection requirements, the screws are available in four material configurations, identified by specific codes:<\/p>\n

    \n
  • W1:<\/strong> Carbon steel, uncoated.<\/li>\n
  • W3:<\/strong> Zinc\/nickel-plated carbon steel. This variant is the standard finish option for the North American market.<\/li>\n
  • W4:<\/strong> V2A stainless steel, corresponding to grades 1.4301 \/ 1.4305 (AISI 304 \/ 303).<\/li>\n
  • W5:<\/strong> V4A stainless steel, corresponding to grades 1.4401 \/ 1.4571 (AISI 316 \/ 316 Ti), for maximum performance in corrosive environments.<\/li>\n<\/ul>\n

    Fluid Specifications and Applications<\/h3>\n

    The STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series) is used in the hydraulic components and fluid contamination control sectors. Upon request, STAUFF can supply alternative materials and special surface finishes to meet specific system requirements not covered by the standard W1-W5 options.<\/p>\n

    Summary Technical Table of the Main Features of the STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series)<\/h3>\n
    \n\n\n\n\n\n\n\n\n\n\n\n
    Feature<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
    Product Type<\/td>\nSocket Cap Screw Type IS (Hexagon Socket Head Cap Screw)<\/td>\n<\/tr>\n
    Reference Series<\/td>\nHeavy Series (DIN 3015, Part 2)<\/td>\n<\/tr>\n
    Compliance Standards<\/td>\nISO 4762, ANSI\/ASME B18.3<\/td>\n<\/tr>\n
    Condition of Use<\/td>\nDimensions valid only for use without cover plates<\/td>\n<\/tr>\n
    Thread Type<\/td>\nISO Metric \/ Unified Coarse (UNC)<\/td>\n<\/tr>\n
    STAUFF \/ DIN Groups<\/td>\nFrom 3S (DIN 1) to 6S (DIN 4)<\/td>\n<\/tr>\n
    Materials (W Codes)<\/td>\nW1, W3, W4, W5<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

    Product Codes<\/h3>\n
    \n\n\n\n\n\n\n\n\n
    STAUFF Group<\/th>\nDIN Group<\/th>\nMetric Thread (ISO)<\/th>\nMetric Order Code (W1)<\/th>\nUNC Thread<\/th>\nUNC Order Code (W3)<\/th>\n<\/tr>\n<\/thead>\n
    3S<\/td>\n1<\/td>\nM10 x 30<\/td>\nIS-M10x30-W1<\/td>\n3\/8-16 UNC x 1<\/td>\nIS-3\/8-16UNCx1-W3*<\/td>\n<\/tr>\n
    4S<\/td>\n2<\/td>\nM10 x 40<\/td>\nIS-M10x40-W1<\/td>\n3\/8-16 UNC x 1-3\/4<\/td>\nIS-3\/8-16UNCx1-3\/4-W3*<\/td>\n<\/tr>\n
    5S<\/td>\n3<\/td>\nM10 x 50<\/td>\nIS-M10x50-W1<\/td>\n3\/8-16 UNC x 2<\/td>\nIS-3\/8-16UNCx2-W3*<\/td>\n<\/tr>\n
    6S<\/td>\n4<\/td>\nM12 x 80<\/td>\nIS-M12x80-W1<\/td>\n7\/16-14 UNC x 3-1\/4<\/td>\nIS-7\/16-14UNCx3-1\/4-W3*<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n","protected":false},"excerpt":{"rendered":"

    The STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series) is specifically designed for fastening installations that do not use cover plates<\/span>. Manufactured in strict compliance with ISO 4762 and ANSI\/ASME B18.3, the component is supplied with ISO metric or UNC threads<\/span>. The availability of carbon steel and stainless steel variants (V2A and V4A) makes it suitable for a range of high-pressure applications<\/span>. The available product codes are: IS-M10x30-W1, IS-3\/8-16UNCx1-W3, IS-M10x40-W1, IS-3\/8-16UNCx1-3\/4-W3, IS-M10x50-W1, IS-3\/8-16UNCx2-W3, IS-M12x80-W1, IS-7\/16-14UNCx3-1\/4-W3<\/span>.<\/span><\/p>\n","protected":false},"featured_media":12800,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[101,470],"product_tag":[281],"class_list":{"0":"post-13293","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":"\nSTAUFF Hexagon Socket Head Cap Screw (Type IS - Heavy Series) \u2013 LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"STAUFF Hexagon Socket Head Cap Screw (Type IS - Heavy Series), available in carbon steel or V2A\/V4A stainless steel. 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