Socket Screws

Product Size Grade ASME ISO ASTM
Socket Head Cap Screw Socket head cap screw M1.6 to M64 12.9 B18.3.1 M 4762 A574M
Socket Low Head Cap Screw Socket low head cap screw M4 to M20 10.9 As per standard specification
Socket Head Shoulder Screw Socket head shoulder screw M6 to M24 012.9 B18.3.3M h8
Countersunk Socket Head Screw Countersunk socket head screw M3 to M20 012.9 B18.3.5M 10642 F835M
Button Head Socket Screw Button head socket screw M3 to M12 012.9 B18.3.4M 7380 F835M
Flange Button Head Socket Screw Flange button head socket screw M3 to M10 012.9 As per standard specification F835M
Knurled Point Socket Set Screw Knurled point socket set screw M3 to M20 45H B18.3.6M 4029 F912M
Flat Point Socket Set Screw Flat point socket set screw M6 to M12 45H B18.3.6M 4026 F912M
Dog Point Socket Set Screw Dog point socket set screw M3 to M20 45H B18.3.6M 4028 F912M
Cone Point Socket Set Screw Cone point socket set screw M3 to M12 45H B18.3.6M 4027 F912M
Plain Point Socket Set Screw Plain point socket set screw M3 to M20 45H B18.3.6M 4029 F912M
Taper Pressure Plug Taper pressure plug M8 to M22 - As per standard specification
Product Diameter Thread Tensile PSI / Hardness ANSI/ASME BS ASTM
Socket Head Cap Screw Socket head cap screw #0 to 2" 1936 & 1960 UNC/UNF/BSW 190,000 <1/2" / 180,000 >1/2" B18.3 2470 A574
Socket Low Head Cap Screw Socket low head cap screw #8 to 1/2" UNC/UNF 170,000 As per standard specification F835
Socket Head Shoulder Screw Socket head shoulder screw 1/4" to 2" UNC HRC 45-53 B18.3 2470
Countersunk Socket Head Screw Countersunk socket head screw #4 to 1 1/2" UNC/UNF 160,000 B18.3 2470 F835
Button Head Socket Screw Button head socket screw #10 to 5/8" UNC/UNF 160,000 B18.3 2470 F835
Flange Button Head Socket Screw Flange button head socket screw #8 to 1/2" UNC/UNF As per standard specification 2470 F835
Knurled Point Socket Set Screw Knurled point socket set screw #4 to 5/8" UNC/UNF HRC 45-53 B18.3 2470 F912
Plain Point Socket Set Screw Plain point socket set screw #0 to 5/8" UNC/UNF HRC 45-53 B18.3 2470 F912
Taper Pressure Plug Taper pressure plug 3/4" to 7/8" As per standard specification

Pratham Fasteners is a trusted supplier and authorized distributor of premium-quality fastening solutions across India. We offer a comprehensive range of Unbrako Screws, including high-performance Socket Screws designed for demanding industrial applications. As a leading Unbrako Dealer and Unbrako Distributor, we ensure that our customers receive genuine products known for their superior strength, precision engineering, and durability. We also serve as a reliable Caparo Dealer and Caparo Distributor, providing high-quality fastening products for engineering, automotive, construction, and manufacturing industries.

With over two decades of industry experience, Pratham Fasteners has earned a reputation for supplying authentic Unbrako Screws and industrial fastening products at competitive prices. Our commitment to quality, technical expertise, and customer satisfaction has made us a preferred Unbrako Dealer and Unbrako Distributor for clients across various sectors. Alongside Unbrako products, we are also recognized as a dependable Caparo Dealer and Caparo Distributor, offering complete fastening solutions backed by professional support and nationwide supply capabilities.

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