BA Full Hex Nuts

BA Full Hex Nuts – Mild Steel & Brass (BS 57)

Designed for high-precision British engineering, classic restorations, and intricate model making, these British Association (BA) Full Hexagon Nuts deliver a secure, reliable fixing solution. Manufactured to BS 57 specifications, they are ideal for low-torque electrical, mechanical, and small-assembly applications where standard metric sizes won't fit.

Choose between durable mild steel for high tensile strength or premium solid brass for excellent corrosion resistance and electrical conductivity.

Key Features:

  • Thread Standard: British Association (BA) thread profile

  • Material Options:

    • Mild Steel: Available in Bright Zinc Plated (BZP) or Self-Colour for general strength and durability.

    • Solid Brass: Highly resistant to rust, non-magnetic, and ideal for electrical or decorative applications.

  • Full Hexagon Profile: Standard full-height design for optimal spanner grip and clamping force.

  • Applications: Essential for vintage vehicle and motorcycle restoration, live steam model engineering, electrical instrumentation, and antique clock repair.

Material Finish Options Key Properties Common Uses
Mild Steel Bright Zinc Plated (BZP) / Self-Colour High structural strength, cost-effective Workshop assembly, vintage machinery
Solid Brass Natural Machined Brass Non-magnetic, corrosion-resistant, conductive Electrical terminals, marine, vintage models

 

 

Size Thread Pitch (TPI) Major Diameter (Approx.)
0BA 25.4 tpi 6.00 mm (0.236")
2BA 31.4 tpi 4.70 mm (0.185")
4BA 38.5 tpi 3.60 mm (0.142")
6BA 47.9 tpi 2.80 mm (0.110")