Lumax Grease Fitting

Lumax Grease Fittings: Precision-Engineered for Demanding Applications

When it comes to keeping machinery properly lubricated, the humble grease fitting plays a surprisingly critical role. A failed or poorly made fitting can block grease flow, invite contamination, or strip under pressure — costing far more in downtime than the fitting itself is worth. That's why professional technicians and serious DIYers turn to Lumax, a brand built on a singular focus: lubrication and fluid management done right.

Grease fittings from Lumax aren't an afterthought in a broad catalog — they are a core competency. Every fitting is individually inspected and batch-tested to 5,000 PSI, giving users confidence that the fitting won't be the weak link under heavy-duty service conditions. This level of quality control is uncommon in a category where many manufacturers simply stamp out commodity hardware.

What Sets Lumax Grease Fittings Apart

One of Lumax's most notable engineering choices is the use of thread-rolled taper threads rather than cut threads. The rolling process hardens and toughens the thread material, resulting in stronger threads that resist wear. By contrast, cut-thread fittings can become brittle at the periphery during manufacturing — a structural disadvantage that only shows up under load or repeated use.

Lumax also employs a dome-type riveting design that fully covers the internal spring, securing it firmly in place and protecting it from contamination. Combined with a ball-check valve in the head that blocks dirt and grit from entering the fitting, these design details make a meaningful difference in real-world service life.

SAE & Metric Coverage for Any Application

Lumax grease fittings are available in both SAE and metric configurations, covering a wide range of thread sizes and fitting styles. Their assortment kits — such as the LX-4841 (100-piece SAE assortment) and the LX-4843 (100-piece metric assortment with a passivated finish for maximum corrosion protection) — make it practical to stock a full complement of fittings for the shop. Drive-type fittings like the LX-3505 series feature a circumferential serrated shank that creates a grease-tight seal on installation, eliminating the need for tapping and reducing labor costs.

These fittings are designed to meet the demanding requirements of automotive, agricultural, industrial, marine, truck, and construction equipment applications — making them equally at home in a dealership service bay, a farm shop, or on a marine vessel.

A Brand Built Around Lubrication

Lumax's entire product ecosystem is built around the lubrication workflow. Their grease fittings are engineered to work seamlessly with Lumax grease guns and accessories, ensuring compatibility across the board. Whether you're replacing a single worn fitting or re-equipping an entire fleet, the Lumax brand page offers the full range of lubrication solutions to pair with these fittings. For a broader look at fitting options from multiple manufacturers, explore the complete Grease Fitting category.