Package Price:
$28.85/5 PER EAUsually ships within 3-5 business days
The Miller 178355 is a specialized replacement nut designed for specific assemblies within Miller welding power sources and wire feeders. This hardware features a unique .375-32 thread pitch (3/8-inch diameter with 32 threads per inch), classified as Unified Extra Fine (UNEF). This specific thread pitch is critical for fine adjustment applications and high-vibration environments where standard coarse or fine threads may not provide adequate torque retention or precision. Using the correct OEM specification ensures that mating studs or bolts are not damaged during installation, preserving the integrity of your expensive welding equipment.
Constructed as a flange nut, this component integrates a wide circular base that acts as a built-in washer. This design distributes the clamping load over a larger surface area, reducing the risk of damage to the mounting surface and ensuring a secure hold even on oversized holes. The integrated flange also streamlines assembly and maintenance by eliminating the need to handle and align separate washers, which is particularly beneficial when performing repairs in tight or difficult-to-reach areas of a machine chassis.
A key feature of the Miller 178355 is its nylon insert, commonly referred to as a Nyloc design. The nylon ring embedded at the top of the nut undergoes elastic deformation when the nut is tightened onto a bolt. This creates significant friction and radial compressive force, effectively locking the nut in place. In the context of welding equipment, which often generates significant vibration during operation (especially engine drives and heavy industrial power sources), this locking mechanism is essential to prevent fasteners from backing out over time. This 5-pack quantity allows maintenance teams to stock necessary spares for immediate repairs, minimizing downtime.
Technical Specifications:
| Additional Information |
|---|
| Brand:Miller |
| Packaging Description:5 PER EA |
| Thread Size:.375-32 UNEF |
| Nut Type:Nylon Insert Flange Nut |
| Hex Size:0.54 inch |
| Material:Steel, Nylon |
