Screws / Spring plungers
Here you can find the Special Springs screws and plungers most suitable for your applications.
Shoulder Screws
Material: high grade alloy steel ISO 12.9
Hardness: 37÷43 HRC
Tensile strength: Rm = 1200 N/mm2 min
Yield strength: Rp 0,2 = 1080 N/mm2 min.
Shear strength: Tm = 720 N/mm2 min.
Elongation: A = 8% min.
Impact test:KCU 15J min. KCU 15J min.
Ground Spacer Sleeve Shoulder Screws
Cap screw: steel class 12.9 UNI 5931 DIN 912
Cup washer: hardened and tempered steel, not ground; tensile strength 100 Kg/mm2
Spacer sleeve: hardened, tempered and ground steel; tensile strength 120 - 140 Kg/mm2
Spring Plugers
Material: Steel class 5.8
Surface treatment: Black oxidation
Ball: Hardened and polished stainless steel
AFTER-SALES SERVICES
To receive more informations about our products and to receive technical support please contact us.
Tel. +39 0424 539181
Fax +39 0424 898230
E-mail info@specialsprings.com
