SPL hex flanged nut is a hexagonal fastener with an integrated flange at the bottom. The flange expands the contact area to distribute pressure. It achieves self-locking and anti-loosening via Spiralock wedge thread structure, suitable for automotive, engineering machinery and other working conditions requiring high clamping force and vibration resistance.

Cold forged in one piece with fine metal grain structure, high dimensional accuracy and low material waste.

• High‑strength base: Made of premium steel such as 10B21 and quenched & tempered to meet strength requirements.

• Reliable locking: Precisely press‑fitted integral nylon insert removes risks of aging, cracking and falling off of nylon rings on traditional products.

• Traceability: Material reports and salt spray test data for surface treatment are available to satisfy strict standards for bidding and centralized procurement audits.

The wheel nut is a safety fastener designed to secure vehicle wheel hubs to the axle. It locks the wheel assembly firmly for reliable driving.
Subjected to continuous vibration and road impact, wheel nuts require strict strength standards to prevent loosening. Most are made of carbon steel with heat treatment, finished with yellow zinc plating for corrosion resistance. The tapered seat design helps centering and even load distribution during tightening. Wheel nuts must be torqued to specified values after tire service.
 

Hex flange nut combines a hexagonal nut body and an integrated flange washer. The wide flange spreads clamping pressure evenly to prevent loosening and slipping. It is widely used on automotive chassis, brackets and suspension assemblies under vibration loads.

High‑strength hot‑die forged flange shaft for automobile transmission system. We supply forging blanks as well as CNC‑machined finished parts, custom‑made according to customer drawings.

Types of Cooper Alloys in Forging

The most forgeable (hot) copper alloy is one with 38% zinc and a small amount of lead. This alloy is a two-phase alpha-beta brass at room temperature, but the hot-forging temperatures take the alloy into the single-phase beta region where deformation can easily occur. Lubrication requirements are generally minimal because the copper oxide that forms on the surface is a natural lubricant.

Copper and its alloys exhibit good ductility and are generally considered as easy to forge. When hot forging, the preheat temperatures are typically 1350-1700°F. 

Brass and Bronze are among the most well-known families of copper-base alloys. 

Brass is typically a combination of copper and zinc. Hot brass forging provides for superior density and freedom from flaws, along with dimensional accuracy for duplication of parts. The single-phase alpha brasses are alloys of copper with up to 32% zinc. These alloys can also be strengthened by hot forging.  An unusual property of these alpha brasses is that, in some cases, you can have an alloy with additional zinc and it is both stronger and more ductile than a leaner alloy. The alpha-beta brasses are two-phase metals containing 32-40% zinc.

Bronze is predominantly copper combined with tin, aluminum, silicon or beryllium. Bronze is harder than pure iron and is more resistant to corrosion. Bronze is also harder than pure copper, and over time has been used for weapons, armor and tools.

Copper alloy forgings offer a number of advantages, including high strength, closer tolerances and modest overall cost. Brass forgings are commonly used in valves, fittings, refrigeration components and gas and liquid handling products. Industrial and decorative hardware products also employ forgings. Most copper alloy forgings are hot formed in closed dies. Common forging alloys are the high coppers, C10200, C10400 and C11000, which exhibit excellent ductility, or high strength alloys, all of which exhibit the hightemperature ductile α+β phase structure.

Copper Forging

Copper Forging or Brass Forging is the forging process utilizing copper or brass as the forging material.

Copper alloys have good plasticity and strength, good abrasion resistance and thermal conductivity, especially good corrosion resistance in air and sea water. It has been widely used in electric power, instruments, ships and other industrial sectors.

Most copper alloys have good plasticity at room temperature and high temperature, and can be forged smoothly. Even in the presence of tensile stress, they still have enough plasticity. A few tin-phosphorous bronze with high quality fraction of tin (such as qsn7-0.2) and lead brass with high quality fraction of lead (such as hpb59-1 and hpb64-2) have low plasticity and are sensitive to tensile stress. Qsn7-0.2 is a single-phase invariant solution at room temperature when deformation occurs under static tensile stress. Has the very high plasticity, can undertake cold deformation, but plasticity under high temperature is very low, the reason is that have low melting (alpha + delta + CU3P) eutectic at high temperature.

Most copper alloys are not sensitive to deformation speed and can be forged on a press or hammer, but it is advisable to forge on a press. The phenomenon of heat effect is obvious when tin-phosphor-bronze and manganese bronze are forged. If the deformation speed is too fast, it is easy to overheat or even overheat due to the thermal effect.

When the heating temperature is too high, the copper alloy grain grew up rapidly, reduce its plasticity, so the heating temperature of copper alloy are not more than 900 ℃. When the deformation temperature is below 650 ℃, the deformation resistance increases quickly.