name = "steve/inch-hex-head-screw"
version = "1.0.0"
runtime = "steve"
license = "MIT"
summary = "Hex head screw, inch: ASME B18.2.1 hex cap screws 1/4 to 1/2 in, B18.6.3 hex machine screws #2 to #10, any length."
description = """Hex head screw, Unified inch threads: hex cap screws to ASME B18.2.1 (1/4 to 1/2 in) and hex head machine screws \
to ASME B18.6.3 (#2 to #10). Envelope geometry for assemblies: hexagon head (width across flats F, height H; \
chamfers and washer face not modelled) and a plain shank at the ASME B1.1 basic major 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, in inches (the model itself is in millimetres). Dimensions: see the README."""
tags = ["fastener", "screw", "bolt", "hex-head", "asme-b18-2-1", "asme-b18-6-3", "inch", "unc", "unf"]

[parameters.size]
type = "choice"
default = "1/4-20"
choices = ["#2-56", "#2-64", "#4-40", "#4-48", "#6-32", "#6-40", "#8-32", "#8-36", "#10-24", "#10-32", "1/4-20", "1/4-28", "5/16-18", "5/16-24", "3/8-16", "3/8-24", "7/16-14", "7/16-20", "1/2-13", "1/2-20"]
label = "Thread"

[parameters.length]
type = "number"
default = 1.0
min = 0.0625
max = 12
step = 0.0625
unit = "in"
label = "Length"
description = "Nominal length L in inches, from under the head to the end of the shank."

[parameters.material]
type = "choice"
default = "steel"
choices = ["steel", "stainless-18-8", "stainless-316"]
label = "Material"
description = "steel: carbon steel, zinc plated; stainless-18-8 (304) or stainless-316."