Name: U4167H12 Contact Tip (M6×45mm) | OTC WT3510/5000 Torch Consumable
Brand: OTC DAIHEN
SKU: 0870-425

OTC Daihen Genuine Copper Contact Tip U4167H12 (M6×45mm / For WT3510 & WT5000)

U4167H12 is an official OEM genuine contact tip custom-engineered by OTC Daihen for classic heavy-duty manual gas-shielded welding torches (WT3510 and WT5000 series). Operating at the frontline of MAG welding under intense arc heat and high amperage, this contact tip is crafted from high-purity copper alloy with precision cold-heading and mirror-smooth bore drawing. It ensures low-loss current transfer and excellent resistance to thermal softening and mechanical wear. Replacing worn consumables with original U4167H12 tips eliminates rapid bore ovality, erratic arc weaving, contact tip burnback, and spatter adhesion, delivering smooth wire feeding and stable welding performance.

OTC Daihen Genuine Contact Tip U4167H12 Front View — Figure 1: Front View of Genuine OTC M6×45mm Welding Contact Tip U4167H12

⚙️ Technical Specifications

Specification Attribute	Detailed Parameter
OEM Part Number	U4167H12
Product Type	Welding Torch Current Transfer Consumable (Contact Tip)
Physical Specifications	Thread M6 × Overall Length 45mm
Compatible Models	Dedicated fit for OTC WT3510 and WT5000 Manual MIG/MAG Torches
Packaging Standard	10 Pcs / Box (OEM moisture-proof packaging)
Quality Guarantee	100% genuine OEM copper consumable; wear-resistant & zero arc wander

Figure 2: Precision Machining and Tapered Anti-Spatter Front Chamfer on U4167H12

OTC Contact Tip U4167H12 M6 Threads — Figure 3: Precision M6 Mounting Threads and Smooth Wire Entry Chamfer on U4167H12

🔧 MAG Torch Consumable Assembly & Tip Care Guide (Essential Reading)

Prevent Bore Ovality & Arc Deflection: Continuous wire friction wears contact tip bores over time. When arc stability degrades and wire begins weaving at the weld pool, the bore has worn oval, losing electrical contact efficiency. Replace tips promptly to maintain centered wire guidance.
Prevent Thread Seizure (Anti-Seize Paste): High MAG welding temperatures cause M6 threads to sinter and seize inside tip holders, resulting in sheared threads during removal. Always apply a trace amount of conductive anti-seize paste to threads before installation and tighten moderately with a tip wrench.
Spatter Bridging & Burnback Prevention: Spatter accumulation on tip tips can bridge the gap to outer nozzles, causing short circuits or wire burnback (wire fusing inside the tip bore). Apply anti-spatter spray and remove spatter frequently with MIG pliers.
Never Hammer Tips: Do not strike steel plates with torch tips to remove slag; impact crushes copper exit bores, jamming welding wire instantly.