name = "steve/hex-head-screw"
version = "2.0.0"
runtime = "steve"
license = "MIT"
summary = "Hexagon head screw, fully threaded, ISO 4017 / DIN 933, M1.6 to M36, any length, with catalogue sizes as presets."
description = """ISO 4017 (DIN 933) hexagon head screw, thread to the head. Envelope geometry for assemblies: hexagon \
head (s, k, sharp corners) 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 4017:2014 Table 1 (see the README)."""
tags = ["fastener", "screw", "bolt", "hex-head", "iso-4017", "din-933", "metric"]

[parameters.size]
type = "choice"
default = "M6"
choices = ["M1.6", "M2", "M2.5", "M3", "M4", "M5", "M6", "M8", "M10", "M12", "M14", "M16", "M20", "M24", "M30", "M36"]
label = "Thread size"

[parameters.length]
type = "number"
default = 20
min = 2
max = 400
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 8.8, zinc plated; stainless-a2 / stainless-a4: ISO 3506-1 A2 / A4."