An extremely strong precipitation hardened stainless steel
- Well suited for high strength applciaitons
- Up to 4x stronger than 316 stainless steel
- Maintains its mechanical strength up to 600°F
- 17-4PH Chemistry & Specifications
- 17-4PH pan head screw features and benefits
17-4 PH pan head screws are made from a precipitation hardened stainless steel most known for its exceptional strength and its ability to maintain its mechanical properties to 600°F. Compared to 316 stainless steel, 17-4 PH screws yield strength is up over 4 times greater. When compared to Duplex 2205 screws, the yield strength of 17-4 PH can be up to 2-½ times greater.
17-4 pan head screws are available in 8 different aged (precipitation hardened) conditions offering a variety of mechanical properties (see below).
Resources: 17-4PH Torque Specs
Pan head screws are flat on top and rounded on the sides. 17-4PH pan head screws are ideal for:
- Small diameter fasteners – especially when the fastener size needed is too small for a wrench.
- When phillips or slotted drivers are desired. For many high strength specialty alloys, only slotted drives are available.
- Low torque applications because the drivers don’t offer as much force as a wrench.
- Large diameter head provides more clamping area.
How Are They Different from Button Head Screws?
17-4 PH pan head and button head screws have very similar profiles however, button head screws allow for a hex socket driver whereas pan head screws do not.
17-4PH Specifications: UNS S17400, AISI 630, ASTM A564-630, Werkstoff 1.4542, AMS 5604 Sheet, Strip and Plate, ASTM A 693 Plate