{ "version": "2026-10-20", "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.", "slug": "traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive", "name": "Traxxas 3931 screws, M3 × 8 mm", "kind": "modern", "category": "RC cars", "group": "Bearings & hardware", "year": null, "question": "What size are Traxxas 3931 screws?", "tags": [ "rc parts", "replacement part", "screw", "traxxas" ], "aliases": [ "Traxxas 3931", "traxxas 3931", "Traxxas part 3931", "3931 screws, 3x8mm flat-head machine (hex drive)", "Traxxas 3931 size", "Traxxas 3931 dimensions", "Traxxas 3931 replacement", "repuesto Traxxas 3931", "Traxxas 3931 Ersatzteil" ], "overall_mm": { "length": 6.03, "width": 6.03, "height": 9.72 }, "official_cad": false, "xem_status": "free-files", "les": false, "free_files": 1, "url": "https://xemstudio.com/objects/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive/", "sheet_txt": "https://xemstudio.com/objects/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive/sheet.txt", "sheet": { "basis": "Maker's parts list (Traxxas)", "overall_mm": { "length": 6.03, "width": 6.03, "height": 9.72 }, "notes": [ "Traxxas part 3931: Screws, 3x8mm flat-head machine (hex drive) (6). Size exactly as printed in Traxxas's parts list; the file is built from that size only.", "M3 × 8 mm, shank as a plain Ø3 cylinder, ISO 10642 flat (countersunk) head Ø6 × 1.7 mm.", "True size, no printing tolerance added.", "Traxxas prints the thread and length; the head is drawn to the ISO 10642 flat (countersunk) head standard (from the catalog's screw page) because the maker gives no head size." ], "table": { "columns": [ "dimension", "value" ], "rows": [ [ "part number", "Traxxas 3931" ], [ "name (as printed)", "Screws, 3x8mm flat-head machine (hex drive) (6)" ], [ "size (as printed)", "3x8mm flat-head machine (hex drive)" ], [ "thread", "M3" ], [ "length", "8 mm" ], [ "head (drawn)", "ISO 10642 flat (countersunk) head: Ø6 × 1.7 mm — head size not printed by Traxxas" ], [ "used in", "Traxxas Slash 2WD (1/10 short course truck, 58034), Traxxas TRX-4 2021 Ford Bronco (1/10 crawler, 92076-4)" ] ] } }, "sheet_text": "Traxxas 3931 screws, M3 × 8 mm — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive/ (sheet CC BY 4.0)\nBasis: Maker's parts list (Traxxas)\nCatalog version: 2026-10-20\n\nOverall (mm): length 6.03, width 6.03, height 9.72\n- Traxxas part 3931: Screws, 3x8mm flat-head machine (hex drive) (6). Size exactly as printed in Traxxas's parts list; the file is built from that size only.\n- M3 × 8 mm, shank as a plain Ø3 cylinder, ISO 10642 flat (countersunk) head Ø6 × 1.7 mm.\n- True size, no printing tolerance added.\n- Traxxas prints the thread and length; the head is drawn to the ISO 10642 flat (countersunk) head standard (from the catalog's screw page) because the maker gives no head size.\n\ndimension value\npart number Traxxas 3931\nname (as printed) Screws, 3x8mm flat-head machine (hex drive) (6)\nsize (as printed) 3x8mm flat-head machine (hex drive)\nthread M3\nlength 8 mm\nhead (drawn) ISO 10642 flat (countersunk) head: Ø6 × 1.7 mm — head size not printed by Traxxas\nused in Traxxas Slash 2WD (1/10 short course truck, 58034), Traxxas TRX-4 2021 Ford Bronco (1/10 crawler, 92076-4)\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Traxxas (sheet hosted by JEGS): Slash 2WD Unassembled Kit (Model 58014-4) parts list, REV. 201103 1248, p. 2 — web — Publisher's page; dimensions are facts — https://www.jegs.com/pdfs/430-58014-4-parts.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive/index.json\nAPI: https://xemstudio.com/api/geometry?object=traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive\n", "sources": [ { "publisher": "Traxxas (sheet hosted by JEGS)", "title": "Slash 2WD Unassembled Kit (Model 58014-4) parts list, REV. 201103 1248, p. 2", "url": "https://www.jegs.com/pdfs/430-58014-4-parts.pdf", "formats": [ "web" ], "license": "Publisher's page; dimensions are facts", "license_verified": true, "hosted": false } ], "xem": { "status": "free-files", "sheet_free": true, "mesh_price_usd": null, "step_price_usd": null, "tolerance_mm": null }, "related": [ "traxxas-slash-2wd-parts-list", "traxxas-trx-4-2021-ford-bronco-parts-list", "traxxas-slash-2wd", "traxxas-trx-4-2021-ford-bronco", "socket-head-cap-screws-metric", "button-head-screws-metric", "countersunk-screws-metric" ], "fits": [], "dimensions": "exact (nominal, no printing tolerance)", "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.", "mating": [], "faq": [ { "q": "What size are Traxxas 3931 screws?", "a": "M3 × 8 mm" } ], "files_license": null, "offers": [ { "file": "traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive-envelope", "formats": [ "step", "stl" ], "price_usd": 0, "license": "CC BY 4.0 (Xem Studio)", "step": "https://xemstudio.com/files/hardware/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive-envelope.step", "stl": "https://xemstudio.com/files/hardware/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive-envelope.stl", "note": "M3 × 8 mm, shank as a plain Ø3 cylinder, ISO 10642 flat (countersunk) head Ø6 × 1.7 mm" } ], "markdown": "https://xemstudio.com/objects/traxxas-3931-screws-3x8mm-flat-head-machine-hex-drive/index.md" }