// The sheeted screw [SPEC 24]: an ISO 5457 |page| — frame, zone references,
// centring marks — hosting a DIN 912 socket cap screw. The side view is a
// revolved profile with a thread: dressing and a |hidden| hex socket; the
// end view is ordinary concentric geometry; the |title-block| seats itself
// flush inside the frame's bottom-right corner — its ISO 7200 field properties
// build the grid, absent fields collapsing.
|page| { sheet: a4 landscape; gap: 50; align: origin; } [
// the ISO sheet: frame, zones, marks — views share their axes datum-to-datum
|drawing#side| "DIN 912 — M8 × 40" { scale: 2; } [
|sketch#screw| {
draw: move(0, 0) up(6.5) chamfer(0.8) right(8):head down(2.5):k right(12)
point():v right(28):m8 chamfer(1) down(4);
revolve: x-axis;
// a turned part
thread: m8 1.25;
// the threaded run
} [
|hidden#socket| {
// the hex socket, dashed
draw: move(0, 3) right(4) line(3, -3);
mirror: x-axis;
}
]
screw:head (o) { side: left; }
// → ⌀13
screw:left (-) screw:k { side: bottom; }
// → 8 — K, the head
screw:k (-) screw:right { side: bottom; }
// → 40 — L, under the head
screw:v (-) screw:right { side: top; }
// → 28 — the thread length
screw:m8 <- { side: top; }
// → M8×1.25 — composed by the thread
]
|drawing#end| { scale: 2; } [
|oval#od| { width: 13; height: 13; }
|oval| { width: 11.4; height: 11.4; }
// the head, end-on
|hex#socket| { width: 7; height: 6; }
// the socket, visible here
socket:left (-) socket:right
]
|title-block| {
title: "Socket cap screw"; drawing-number: "DIN 912 — M8 × 40"; revision: "A"; sheet-number: "1/1"; date: "2026-07-08"; author: "AM";
}
]