Preload from proof load

Code snippets

curl "https://api.oanor.com/bolttorque-api/v1/preload" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/bolttorque-api/v1/preload", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/bolttorque-api/v1/preload");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/bolttorque-api/v1/preload",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Preload F = (percent/100)·σproof·As. Typical target is 75 % of proof for reusable joints.",
        "inputs": {
            "nut_factor": 0.2,
            "stress_area_mm2": 84.3,
            "percent_of_proof": 75,
            "proof_stress_mpa": 580
        },
        "proof_load_n": 48894,
        "target_preload_n": 36670.5,
        "target_preload_kn": 36.6705,
        "tensile_stress_mpa": 435,
        "nominal_diameter_mm": 12,
        "tightening_torque_nm": 88.0092
    },
    "meta": {
        "timestamp": "2026-06-04T10:18:35.178Z",
        "request_id": "1cb415d9-35f9-4c45-ab12-5cc6ea46044d"
    },
    "status": "ok",
    "message": "Preload from proof",
    "success": true
}