Lincoln Viking Tempered 1840 Welding Helmet K5432-4

By: Lincoln Electric
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The VIKING™ 1840 Series, our mid-range auto-darkening helmet tier, offers superior 4C(R) optics with a versatile user interface and premium external controls to increase productivity.

  • Industry Leading Optics - 4C Lens Technology, 1/1/1/1 Optical Clarity and expanded 7-13 shade range
  • Digital User Interface – Moisture and abrasion resistant push button LED UI shade, sensitivity, delay and mode control
  • Increased Productivity - External low profile grind control
  • All Day Comfort – Soft, padded front headband to help eliminate pressure points, while the two top head straps evenly distribute weight.
  • Enhanced Safety – New optic test functionality and UV/IR DIN 16 lens safeguard
  • 5 Year Warranty – Protects your investment for 60 months from date of purchase


  • Innovative 4C Lens Technology improves visibility and reduces eye strain
  • Low-profile external grind button
  • Better clarity, real color view - 1/1/1/1 Optical Clarity
  • Easy on the eyes
  • Wide-screen view
  • Increased battery life


The new 4C ADF Technology improves the performance of the lens in the 4 most important categories to the welder:

  • Clarity - Optical Clarity 1/1/1/1
  • Color - Real Color View
  • Carat - Light Weight
  • Cut - Even Shade From Any Angle

The 4C Lens Technology upgrade to Lincoln Electric’s VIKING welding helmets improves visibility and reduces eye strain by minimizing the traditional lime green coloring in the helmet view screen. 4C technology is ideal for a range of industries such as general fabrication, power generation, shipbuilding, structural, offshore and pipeline that use multiple welding processes, including Stick, MIG and TIG. Whatever the task at hand, 4C technology gives you a clear view to productivity and quality.


Better Clarity, Real Color View

Now you can make a good view even better. Upgrading with 4C technology preserves the existing 1-1-1-1 optical clarity rating, but improves visibility by reducing the lime green tint.

Easy On The Eyes
Improved visibility and less eye strain means greater comfort for the welder. This combined with an improved view of the weld puddle adds up to better welds.

Wide-Screen View
4C technology enables you to not only see better, but also see more. The large viewing area gives you a full range of vision in relation to the welding area, which enhances operator control.

Increased Battery Life
The longer you can see clearly, the more you can weld. And more welds mean higher productivity. Improvements to the ADF’s circuitry enables more performance from the battery. Now you can keep welding, increase your productivity and get more from your helmet lens.


Welding Helmets

Welding Helmets Product Types Auto-Darkening
Welding Helmets Compliance ANSI Z87.1
Welding Helmets Product Series VIKING 1840 Series
Welding Helmets ADF Viewing Area 7 Sq. Inches
Welding Helmets Control Type Digital
Welding Helmets External Controls Grind Button
Welding Helmets Headgear Type Pivot
Welding Helmets Weight 19.5 oz. (553g)
Welding Helmets Auto Darkening Yes
Welding Helmets Cartridge Size 5.25 in. x 4.50 in. (133g x 114g)
Welding Helmets Cheater Lens Compatibe Yes
Welding Helmets Flip Up Lens No
Welding Helmets Grind Mode Yes
Welding Helmets Hard Hat Capable Yes
Welding Helmets Lens Shade Rating 7-13
Welding Helmets Light to Dark Switch Time 1/25,000 Sec.
Welding Helmets Magnifying Lens Holder Yes
Welding Helmets Number of Sensors 4
Welding Helmets Quick Adjust Ratched Yes
Welding Helmets TIG Rating 2-5 Amps
Welding Helmets Welding Shade Yes

Replacement Parts

Cover Lenses KP3043-1 Outside Cover Lens, KP2897-1 Inside Cover Lens, S27978-58 Outside Cover Lens Seal, KP4627-1 Bulk Outside Cover Lens
Sweatband & Headgear KP2930-1 Soft Knit Cotton Sweatband, KP4470-1 X6® Headgear, K3908-1 Pivot Headgear, K4100-1 Traditional Headgear
Hard Hat Adapters KP3047-1 Halo Style Hard Hat Adapter, KP3486-1 Slotted Style Hard Hat Adapter
Cheater Lenses KP3046-XXX Magnifying Cheater Lens - 1.00 MAG - 2.50 MAG
Auto-Darkening Filter & Parts KP2853-4 1840 Digital Series ADF Cartridge, S27978-55 ADF Cartridge Holder, KP4562-1 Grind Button Assembly, KP4491-1 CR 2450 Battery


Typical Application Construction
General Fabrication
Heavy Fabrication
Maintenance & Repair
Structural Welding


Warranty 5 Years

Custom Field

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