BS 2A 226:2019 Aerospace series. Specification for Bolts, Hexagonal head, Unified short threads below .250 inch, Alloy steel, Cadmium plated. Classification: R<sub>m</sub> = 124 000 – 146 000 lbf/in<sup>2</sup> (855 – 1 007 MPa) at ambient temp | +190 ºC. Specification

Bolts
Steels
Hexagonal-head fasteners
Fasteners
Unified screw threads
Dimensions
Size
Protective coatings
Threaded fasteners
Threaded components
External-thread fasteners
Air transport engineering
Aircraft components
Designations

Link: BS 2A 226:2019 Aerospace series. Specification for Bolts, Hexagonal head, Unified short threads below .250 inch, Alloy steel, Cadmium plated. Classification: R<sub>m</sub> = 124 000 – 146 000 lbf/in<sup>2</sup> (855 – 1 007 MPa) at ambient temp | +190 ºC. Specification
Source: BSI Standards