Full Nut
Hexagon
Imperial BSW
High Tensile SAE 5
Dia: 1.3/8'
TPI: 6
Wrench Size Across Flats: 2.1/16'
A BSW SAE Grade 5 hex nut refers to a high-tensile imperial fastener that combines the British Standard Whitworth (BSW) thread form with the SAE Grade 5 strength classification.
