name = "steve/button-head-screw"
version = "2.0.0"
runtime = "steve"
license = "MIT"
summary = "Hexagon socket button head screw, ISO 7380-1, M3 to M16, any length, with catalogue sizes as presets."
description = """ISO 7380-1 hexagon socket button head screw. Envelope geometry for assemblies: domed head (dk max, \
k max), hexagon socket (s, t min) and a plain shank at the nominal thread diameter; the thread itself is not modelled.

The head's bearing face is on the XY plane at the origin and the shank points along -Z; `length` is the nominal \
length under the head. Dimensions from ISO 7380-1:2011 Table 1 (see the README)."""
tags = ["fastener", "screw", "button-head", "iso-7380", "metric"]

[parameters.size]
type = "choice"
default = "M5"
choices = ["M3", "M4", "M5", "M6", "M8", "M10", "M12", "M16"]
label = "Thread size"

[parameters.length]
type = "number"
default = 10
min = 2
max = 200
step = 1
unit = "mm"
label = "Length"
description = "Nominal length l, from under the head to the end of the shank."

[parameters.material]
type = "choice"
default = "steel"
choices = ["steel", "stainless-a2", "stainless-a4"]
label = "Material"
description = "steel: property class 10.9 / 12.9, black oxide; stainless-a2 / stainless-a4: ISO 3506-1 A2 / A4."