GY-HS Sockets Heavy Duty 3/8″ (9.50mm) Square Drive

Our premium line of 3/8″ Square Drive Industrial Sockets is engineered for precision, durability, and versatility. Designed specifically for hand-operated tasks, these sockets feature a double hex (12-point) configuration, allowing for easier engagement with fasteners in tight spaces and a reduced swing arc.

Constructed for professional-grade use, these tools are available in both Metric and American (SAE) sizes to ensure a perfect fit for any international project.

Key Features

  • Drive Size: 3/8″ Square Drive, compatible with standard industrial impact wrenches and ratchets.
  • Profile: Double Hex (12-point) design, allowing for easier engagement with fasteners and better performance in tight spaces.
  • Precision Engineering: Detailed specifications provided for Socket End Diameter, Drive End Diameter, Broach Depth, and Bolt Clearance to ensure exact fitment for industrial maintenance.
  • Secure Attachment: Designed for use with driving tools featuring spring-loaded ball and button locking mechanisms for maximum safety during use.
  • Finish: Industrial black phosphate finish for superior corrosion resistance and durability in high-torque environments.
Product Options
We offer two distinct profiles to meet your specific mechanical needs:
1. Standard Heavy Duty Sockets
Ideal for general assembly and maintenance where space is not a constraint.
  • Metric Sizes: Available from 6mm to 22mm (Table A).
  • American (SAE) Sizes: Available from 1/4″ to 7/8″ (Table C).
  • Overall Length (OAL):32mm Standardized lengths for predictable tool handling.
2. Deep Heavy Duty Sockets
Engineered to accommodate long studs and recessed fasteners that standard sockets cannot reach.
  • Metric Sizes: Available from 6mm to 22mm (Table B).
  • American (SAE) Sizes: Available from 1/4″ to 7/8″ (Table D).
  • Overall Length (OAL):55mm Standardized lengths for predictable tool handling.
Technical Specification Standard Metric (table – a)
Part No. Nom. Size A/F Socket End Dia Drive End Dia Approx. OAL
GY-HS1-6 6 10 19 32
GY-HS1-7 7 11.2 19 32
GY-HS1-8 8 12.4 19 32
GY-HS1-9 9 13.7 19 32
GY-HS1-10 10 14.9 19 32
GY-HS1-11 11 16.2 19 32
GY-HS1-12 12 17.4 19 32
GY-HS1-13 13 18.7 19 32
GY-HS1-14 14 20 20 32
GY-HS1-15 15 21.2 21.2 32
GY-HS1-16 16 22.4 22.4 32
GY-HS1-17 17 23.7 23.7 32
GY-HS1-18 18 24.9 24.9 32
GY-HS1-19 19 26.2 26.2 32
GY-HS1-20 20 27.5 27.5 32
GY-HS1-21 21 28.7 28.7 32
GY-HS1-22 22 29.9 29.9 32
Technical Specification Standard American (table – c)
Part Number A/F (inches) Dia (1) Dia (2) Value
GY-HS1-1/4 1/4″ 10.2 19 32
GY-HS1-5/16 5/16″ 12.3 19 32
GY-HS1-3/8 3/8″ 14.3 19 32
GY-HS1-7/16 7/16″ 16.3 19 32
GY-HS1-1/2 1/2″ 18.3 19 32
GY-HS1-9/16 9/16″ 20.4 20.4 32
GY-HS1-5/8 5/8″ 22.3 22.3 32
GY-HS1-11/16 11/16″ 24.2 24.2 32
GY-HS1-3/4 3/4″ 26.2 26.2 32
GY-HS1-13/16 13/16″ 28.2 28.2 32
GY-HS1-7/8 7/8″ 30.2 30.2 32
Technical Specification DEEP METRIC (table – b)
Part No. Nom. Size A/F Socket End Dia Drive End Dia Broach Depth Bolt Clearance Depth Approx. OAL
GY-HSD1-6 6 10 19 8 42 55
GY-HSD1-7 7 11.2 19 8 42 55
GY-HSD1-8 8 12.4 19 9.5 42 55
GY-HSD1-9 9 13.7 19 9.5 42 55
GY-HSD1-10 10 14.9 19 10.5 42 55
GY-HSD1-11 11 16.2 19 10.5 42 55
GY-HSD1-12 12 17.4 19 12.5 42 55
GY-HSD1-13 13 18.7 19 12.5 42 55
GY-HSD1-14 14 20 20 15 42 55
GY-HSD1-15 15 21.2 20 15 42 55
GY-HSD1-16 16 22.4 20 17 42 55
GY-HSD1-17 17 23.7 20 17 42 55
GY-HSD1-18 18 24.9 22 17 42 55
GY-HSD1-19 19 26.2 22 19 42 55
GY-HSD1-20 20 27.5 24 19 42 55
GY-HSD1-21 21 28.7 24 19 42 55
GY-HSD1-22 22 29.9 26 19 42 55
Technical Specification DEEP AMERICAN (table – D)
Part No. Nom. Size A/F Socket End Dia Drive End Dia Broach Depth Bolt Clearance Depth Approx. OAL
GY-HSD1-1/4 1/4″ 10.2 19 8 42 55
GY-HSD1-5/16 5/16″ 12.3 19 9.5 42 55
GY-HSD1-3/8 3/8″ 14.3 19 9.5 42 55
GY-HSD1-7/16 7/16″ 16.3 19 10.5 42 55
GY-HSD1-1/2 1/2″ 18.3 19 12.5 42 55
GY-HSD1-9/16 9/16″ 20.4 19 15 42 55
GY-HSD1-5/8 5/8″ 22.3 20 17 42 55
GY-HSD1-11/16 11/16″ 24.2 22 17 42 55
GY-HSD1-3/4 3/4″ 26.2 22 19 42 55
GY-HSD1-13/16 13/16″ 28.2 24 19 42 55
GY-HSD1-7/8 7/8″ 30.2 26 19 42 55