GRACO Fire-Ball® 425 3:1 Series Universal Size Oil Pump - Wall-Mounted Package - (SKU: 244846) x 18 NPSM hex nut

x 18 NPSM hex nut (as referenced in GRACO manuals)

Hand-tighten the fitting before using a wrench to avoid cross-threading

The material is not explicitly stated for this specific part number

Reliability (original GRACO part for consistent performance)

GRACO Fire-Ball® 425 3:1 Series Universal Size Oil Pump - Wall-Mounted Package - (SKU: 244846) x 18 NPSM hex nutThe GRACO Fire Ball 425 3: 1 Series Universal Size Oil Pump is a wall mounted, air powered pump designed for high volume oil and lubricant transfer. It features a robust cast aluminum air motor housing and is engineered for demanding applications where multiple dispenses occur simultaneously. The pump is intended for use in environments such as automotive dealerships, heavy duty service centers, fleet facilities, and industrial plants. Key Features: