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Phone Number : +8613910301842
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Professional Grade 5 Titanium Non Magnetic Tool Kit with ESD Safe and Corrosion Resistant Hex Key Set

  • Professional Grade 5 Titanium Non Magnetic Tool Kit with ESD Safe and Corrosion Resistant Hex Key Set
  • Professional Grade 5 Titanium Non Magnetic Tool Kit with ESD Safe and Corrosion Resistant Hex Key Set
Brand Name Jovi
Certification ISO
Model Number 1-cf-7
Document JVVM-NMT-Series SPE and Quo...on.pdf
Minimum Order Quantity 1set
Price $2580
Packaging Details Carton&wooden Box
Delivery Time 7-14days
Payment Terms T/T
Supply Ability 300 Set / Month
Product Details
Wire Diameter 12 Mm Tolerance ±0.02 Mm
Bend Radius 4× Wire Diameter Ball End Radius 1.5× Across-flats
Drive End Size 6.35 Mm ±0.02 Mm Coating Thickness 20-50 μm
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Product Description
Raw Material: Drawn Titanium Wire

Hex keys begin as drawn titanium wire – Grade 5 Ti that has been pulled through hexagonal dies.

Wire drawing process:

  1. Titanium rod (12 mm diameter) heated to 700°C

  2. Pulled through first hexagonal die (reduction 20%)

  3. Annealed (700°C, 1 hour) to relieve stress

  4. Pulled through second die (smaller hex)

  5. Repeated until final size reached (e.g., 3 mm across flats)

Result: Hexagonal cross‑section with precise dimensions and smooth surface (no machining marks).

Quality check: Laser micrometer measures across‑flats every 10 meters. Tolerance: ±0.02 mm.

L‑Style Hex Key Manufacturing
Step Process Key Parameter
1 Cut drawn wire to length (200–300 mm) Length tolerance ±0.5 mm
2 Bend 90° (short arm) on CNC bender Bend radius 4× wire diameter
3 Heat treat (age hardening) – already done on wire? Wire pre‑aged; no additional heat treat
4 Grind ball end (optional) Spherical radius = 1.5× across‑flats
5 Bead blast (matte finish) Glass beads, 60 psi
6 Laser mark Size + “Ti ≥90%” + batch number

Ball end grinding:

  • Fixture rotates hex key while grinding wheel moves in arc

  • Result: Smooth sphere on long arm tip

  • Inspection: Optical comparator – ball end must not have flat spots

Critical dimension: Short arm length (varies by size)

Size (mm) Short arm length (Jovvi) Application
1.5 15 mm Tight RF coil access
2.0 18 mm Standard
2.5 20 mm Standard
3.0 25 mm Standard
4.0 28 mm General
5.0 32 mm General
6.0 36 mm High torque
8.0 45 mm Large fasteners
10.0 55 mm Cryostat external
T‑Handle Hex Key Manufacturing

T‑handles provide better ergonomics and higher torque capability.

Construction:

  1. Hex shaft: Same drawn wire as L‑style, cut to 150–200 mm length

  2. Handle: Brass (cast) or aluminum (machined) – both non‑magnetic

  3. Assembly: Shaft pressed into handle with epoxy (MRI‑safe)

  4. Tang option: Shaft extends through handle (visible at top) – confirms no steel core

Torque advantage: T‑handle allows 20–30% higher torque than L‑style before hand fatigue.

Sizes: 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm (handles color‑coded by size).

Micro Hex Keys (0.7–1.3 mm)

For animal MRI (7T, 9.4T) and small device repair, standard hex keys are too large.

Manufacturing challenges:

  • Drawn wire below 1 mm is difficult (breaks during drawing)

  • Jovvi uses centerless grinding of titanium rod to hexagonal cross‑section (not drawn)

  • Process: Rod rotated while grinding wheel forms hex shape

  • Tolerance: ±0.01 mm (critical for 0.7 mm size)

Inspection: 100% optical measurement (microscope with digital scale). Reject any with corner radius >0.02 mm.

Set: 0.7 mm, 0.9 mm, 1.3 mm (stored in foam case with size labels).

Hex Bit (1/4″ Drive) Manufacturing

For use with ratchet or torque wrench:

Step Process
1 Machine hex tip (same as L‑style end) on CNC lathe
2 Machine 1/4″ hex drive end (opposite side)
3 Heat treat (age harden)
4 Bead blast
5 Laser mark size + “Ti”

Drive end tolerance: 6.35 mm ±0.02 mm across flats (fits standard 1/4″ drivers).

Torque Testing (Destructive – Sample from Each Batch)
Size (mm) Torque to failure (N·m) – Jovvi Ti Failure mode
1.5 2.5 Torsional fracture at bend
2.0 5.0 Torsional fracture at bend
2.5 8.0 Torsional fracture at bend
3.0 12.0 Torsional fracture at bend
4.0 20.0 Torsional fracture at bend
5.0 30.0 Twisting (plastic deformation)
6.0 40.0 Twisting (plastic deformation)

Acceptance criterion: Failure torque must exceed 2× recommended max torque (from Version 6 table). Jovvi exceeds this standard.

Anti‑Galling Surface Treatment (Optional)

For customers using titanium hex keys with titanium screws (e.g., custom MRI coils), Jovvi offers a plasma electrolytic oxidation (PEO) coating.

PEO process:

  1. Hex key immersed in electrolyte (phosphate-based)

  2. High voltage (500–800 V) applied – plasma discharges form ceramic oxide layer

  3. Resulting coating: TiO₂ (rutile) – thickness 20–50 μm

  4. Benefit: Reduces coefficient of friction (Ti‑on‑Ti) from 0.8 to 0.3

Order code: Add “‑PEO” to hex key part number (e.g., JOHL‑9‑PEO). Lead time +5 days.

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