Non-Standard Titanium Fasteners by Drawing \| CNC to DWG, Gr2/Gr5/Gr7, ASTM F468+B348, DFM Review, EN 10204 3.1, Baoji

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Проверено и поддерживается инженерной командой Shaanxi Qianyi Tuoda Technology Co., Ltd.

Non-Standard Titanium Fasteners by Drawing | CNC to DWG, DFM Review, ASTM F468 + B348, MTC 3.1

Meta Description: Non-standard Titanium Fasteners machined to approved drawing — shoulder bolts, double-end studs, U-bolts, custom heads/drives, flange studs. Gr2/Gr5/Gr7/Gr12, DFM review before PO, B348 bar + F468 finished route, 100% PMI + GO/NO-GO gauged, EN 10204 3.1, 3.2 TPI PO-fronted.

What "By Drawing" Actually Means

• Geometry frozen by approved DWG/STEP/PDF — datums, tolerances, revision, surface finish all locked
• No "looks like DIN933, just make it" — standard geometry still needs material + thread + condition + test scope named
• Prototype / FAI first, then production lot (change control on revision)
• Bar route (B348) default; forging blank (B381) only when PO invokes forging
• Finished-part acceptance per ASTM F468 (male) / F467 (female) + drawing, not raw-material cert alone

Forms We Machine to Drawing

• Shoulder bolt / stripper bolt / dowel-ended stud
• Double-end stud, tap-end stud, threaded rod with custom ends
• Special head: 12-point, Torx, spline, flange head, low-profile, captive
• U-bolt, eye bolt, anchor bolt, bent stud (bend radius + datum on DWG)
• Internal thread part: tapped sleeve, insert body, custom nut with modified across-flats
• Special thread: UNJ/MJ (fatigue joints), Acme, buttress, left-hand, multi-start — gauge plan on DWG

Drawing Review Checklist (what we read before quoting)

DFM Feedback Before Cut (not after scrap)

• Thread root radius vs roll-die feasibility — rolled preferred for fatigue
• Undercut / thin flange head — galling & head burst risk flagged
• Ti modulus ~half of steel → torque/preload re-validated, not copied from steel DWG
• Left-hand or fine pitch → gauge procurement lead built into schedule
• Anodize colour = ID only; hard-anodize/dry-film only when DWG calls it
• Gr5 STA needs PO明示 + heat-treat curve; annealed default

Process Route (one roof)

1. Mill cert bar (B348) → heat No. logged
2. CNC turn/mill to drawing (no cold-header micro-crack gamble on special heads)
3. Thread: rolled (default) or cut per geometry
4. Deburr + pickle/clean + ferroxyl iron-check on request
5. 100% PMI/XRF (Gr2 vs Gr5 vs Gr7 not by colour)
6. 100% GO/NO-GO ring (male) / plug (female)
7. Dimensional CMM/FAI on first article; sampling plan on production
8. EN 10204 3.1 QA-signed; 3.2 TPI PO-fronted

QC Release Scope

• Chemistry + tensile from bar heat, cross-referenced to finished part
• Thread class per ASME B1.1 (2A/2B) or ISO 965 (6g/6H)
• Length tol: ±1.0mm (≤150mm stud), ±2.0mm (longer) — tighter on FAI only
• Head perpendicularity ≤1° to shank; chamfer burr-free
• Anti-galling treatment verified (MoS₂/PTFE dry film) — no dry dispatch
• Lot tag = DWG rev + heat No. + MTC No.

Anti-Galling & Joint Notes (shipped with pack)

• Clean threads + approved anti-seize; never assemble dry
• Matched nut grade; Gr5 stud + Gr2 nut = strip risk at high preload
• Galvanic: Ti noble in chloride — isolate CS/Al with PTFE sleeve / dielectric washer
• Preload validated on representative joint, not steel torque table
• Reuse policy = engineer's call, stated in assembly procedure

RFQ Template (copy-paste)

Attach: DWG (PDF/STEP/DXF) + revision ___
Form: shoulder bolt / double-end stud / U-bolt / special nut / other ___
Grade: Gr2(R50400) / Gr5(R56400) / Gr7(R52400) / Gr12 ___
Condition: annealed / STA (heat-treat curve required) ___
Thread: ISO 6g / UNC 2A / UNF / UNJ-MJ / special ___
Roll or cut thread: ___   Left-hand: Y/N
Critical dims/tolerances called out: ___
Surface: pickled / polished / anodize(colour) / dry-film lube ___
Mating nut material + preload target: ___
Qty: prototype ___ / FAI ___ / production lot ___
Cert: 3.1 / 3.2 (TPI ___) / AS9102 FAI ___
Incoterm: EXW Baoji / FOB Shanghai / DAP ___

FAQ — Custom Titanium Fasteners by Drawing

Q1: What files do you accept?
A: PDF DWG, STEP, DXF, IGES, or a physical sample + sketch. STEP preferred for CNC.

Q2: B348 or F468 — which cert?
A: B348 = bar feedstock cert; F468 = finished fastener acceptance. Both referenced: bar heat on MTC, finished-part compliance on release record.

Q3: MOQ for custom?
A: Prototype 1 pc handled; FAI then production. No tonnage gate.

Q4: Rolled or cut thread on custom geometry?
A: Rolled when geometry allows (fatigue + anti-gall); cut for undercuts/fine/left-hand.

Q5: Can you match a worn sample with no drawing?
A: Yes — reverse-measure, confirm dims, freeze a released sketch before cut. No "copy by eye".

Q6: Aerospace flight-critical?
A: AS9102 FAI + AS9100 scope + 3.2 TPI named at PO. We supply to released spec, no unqualified "aerospace grade" claim.

Q7: Lead time?
A: DFM feedback fast after DWG review; sample/production window quoted after heat confirm + gauge plan — not before drawing freeze.

Q8: Gr2/Gr5/Gr7 mix risk?
A: 100% PMI per piece; dimensionally identical, grade-verified before pack.

Q9: 3.2 possible?
A: TPI at PO stage; cannot be back-built from 3.1.

Q10: HF / dry chlorine / red fuming nitric?
A: Titanium excluded — red line stated upfront.

Request a Quote

Email: sales@[yourdomain].com

Attach DWG + grade + thread spec + qty. Engineering replies with DFM notes, route, heat status, EXW/FOB price, cert scope.

About: Baoji Titanium Valley custom-fastener line — non-standard titanium bolts/studs/nuts/U-bolts machined to approved drawing, Gr2/R50400, Gr5/R56400, Gr7/R52400, Gr12. DFM review before PO, B348 bar + F468/F467 finished route, 100% PMI + GO/NO-GO gauged, EN 10204 3.1, 3.2 TPI PO-fronted. Drawing rev frozen → heat logged → CNC → thread → cert matched. No grade-by-colour, no dry assembly, no cert downgrade, no quote before drawing freeze. Lot confirmed before PI; tag = DWG rev = MTC = heat.