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STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series)
The STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series) is specifically designed for fastening installations that do not use cover plates. Manufactured in strict compliance with ISO 4762 and ANSI/ASME B18.3, the component is supplied with ISO metric or UNC threads. The availability of carbon steel and stainless steel variants (V2A and V4A) makes it suitable for a range of high-pressure applications. 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.
STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series)
The STAUFF Hexagon Socket Head Cap Screw (Type IS – Heavy Series) 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.
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.
To meet different mechanical strength and corrosion-protection requirements, the screws are available in four material configurations, identified by specific codes:
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.
| Feature | Value |
|---|---|
| Product Type | Socket Cap Screw Type IS (Hexagon Socket Head Cap Screw) |
| Reference Series | Heavy Series (DIN 3015, Part 2) |
| Compliance Standards | ISO 4762, ANSI/ASME B18.3 |
| Condition of Use | Dimensions valid only for use without cover plates |
| Thread Type | ISO Metric / Unified Coarse (UNC) |
| STAUFF / DIN Groups | From 3S (DIN 1) to 6S (DIN 4) |
| Materials (W Codes) | W1, W3, W4, W5 |
| STAUFF Group | DIN Group | Metric Thread (ISO) | Metric Order Code (W1) | UNC Thread | UNC Order Code (W3) |
|---|---|---|---|---|---|
| 3S | 1 | M10 x 30 | IS-M10x30-W1 | 3/8-16 UNC x 1 | IS-3/8-16UNCx1-W3* |
| 4S | 2 | M10 x 40 | IS-M10x40-W1 | 3/8-16 UNC x 1-3/4 | IS-3/8-16UNCx1-3/4-W3* |
| 5S | 3 | M10 x 50 | IS-M10x50-W1 | 3/8-16 UNC x 2 | IS-3/8-16UNCx2-W3* |
| 6S | 4 | M12 x 80 | IS-M12x80-W1 | 7/16-14 UNC x 3-1/4 | IS-7/16-14UNCx3-1/4-W3* |