{"format":"cadcraft-library-item","format_version":1,"uuid":"d83aefcd-6cbb-4024-ba44-3fa5114e3fda","version":1,"name":"Hex bolt 1-8 UNC × 4 in, ASME B18.2.1","kind":"detail","category":"details/generic","description":"Hex bolt, thread 1 in, 8 threads per inch, across flats 38.1 mm, head 17.1 mm, length 101.6 mm, thread 57.2 mm. Side view across corners; thread drawn by the ISO 6410 convention. Dimensions from ASME B18.2.1. Weight from the nominal shape in steel (7850 kg/m³), threads not taken off.","maker":"","model":"","ifc":{"class":"IfcBuildingElementProxy","predefined":"NOTDEFINED"},"plan":{"layers":[{"name":"PART","color":7},{"name":"PART-THIN","color":8},{"name":"PART-CENTER","color":1},{"name":"PART-HIDDEN","color":4},{"name":"PART-FILL","color":254}],"entities":[{"type":"poly","layer":"PART","color":null,"pts":[[-21.997,0],[21.997,0],[21.997,17.066],[-21.997,17.066]],"closed":true},{"type":"line","layer":"PART","color":null,"x1":-10.999,"y1":0,"x2":-10.999,"y2":17.066},{"type":"line","layer":"PART","color":null,"x1":10.999,"y1":0,"x2":10.999,"y2":17.066},{"type":"poly","layer":"PART","color":null,"pts":[[-12.7,0],[-12.7,-98.425],[-9.525,-101.6],[9.525,-101.6],[12.7,-98.425],[12.7,0]],"closed":false},{"type":"line","layer":"PART-THIN","color":null,"x1":-10.752,"y1":-98.425,"x2":-10.752,"y2":-44.45},{"type":"line","layer":"PART-THIN","color":null,"x1":10.752,"y1":-98.425,"x2":10.752,"y2":-44.45},{"type":"line","layer":"PART","color":null,"x1":-12.7,"y1":-44.45,"x2":12.7,"y2":-44.45},{"type":"line","layer":"PART-CENTER","color":null,"x1":0,"y1":20.066,"x2":0,"y2":-104.6}]},"body":null,"params":{"width":44,"depth":118.7,"height":38.1,"weight_kg":0.5725},"source_attrs":{"CC-PART-TYPE":"Hex bolt","CC-PART-STD":"ASME B18.2.1","CC-PART-SIZE":"1-8 UNC × 4 in","CC-PART-MATERIAL":"Steel","CC-PART-LENGTH":"101.6"},"license":{"id":"CC0-1.0","holder":"CadCraft","attribution":"“Hex bolt 1-8 UNC × 4 in, ASME B18.2.1” by CadCraft, dimensions from ASME B18.2.1 (https://www.asme.org/codes-standards/find-codes-standards/b18-2-1-square-hex-heavy-hex-askew-head-bolts-hex-heavy-hex-hex-flange-lobed-head-lag-screws), CC0 1.0 (https://creativecommons.org/publicdomain/zero/1.0/).","url":"https://creativecommons.org/publicdomain/zero/1.0/"},"provenance":{"library":"librarycraft","item":"d83aefcd-6cbb-4024-ba44-3fa5114e3fda","version":1,"sha256":"f7c0e86e3821ace494002bc3e7423e2c3c6a2879e2bbbffdf7caff2849a65a40","source_file":"hex-bolt-1-8-unc-x-4-in-asme-b18-2-1.item.json","source_sha256":"74fef0679f8fd6a1c8866ea8fb82b94347813f202eb0e8509c6d4f9dc0e6b51b","published_at":"2026-10-14T21:00:38Z"}}