A knurled cylindrical head with an internal hex drive delivers high clamp force in counterbored holes; cold-forged alloy steel to 12.9 is the precision machine-build standard.
Conforms to

Cylindrical hex-drive head, high-tensile precision screw.
A cross-section of stocked configurations. Not exhaustive — diameters, lengths, grades, and finishes extend across the full range on request.
Representative specifications — not exhaustive · NXB-SHCS
Match the line to the load, the environment, and the standard it answers to.
Materials
Finishes
Standards
Typical applications
Served industries
Mating parts and adjacent lines engineers reach for alongside this one.
Headless threaded screw that locates against a shaft.
M3–M16 · #4–1/2"
Precision unthreaded shoulder forms a pivot or bearing surface.
Ø6–Ø24 mm shoulder · 1/4"–1"
Uniform machine thread for tapped holes and nuts.
#2–1/2" · M2–M12
Six-sided structural workhorse for nut or tapped-hole joints.
M5–M48 · 1/4"–2"
Grade, material, finish, and standard — matched to your joint and quoted from stock. Tell us the load case and we’ll confirm the line.