OSG Threading Tap - NPT Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 1/4 x 18 FLH and the bottom lead finishes

and the bottom lead finishes the full-depth thread where required

and a distinctive yellow ring for quick identification

straightforward checks that require minimal training

and dependable hole quality across a wide range of materials

Whether you're prototyping or producing tight-tolerance parts

OSG Threading Tap - NPT Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 1/4 x 18 FLH and the bottom lead finishesAchieve precision in blind hole threading with the OSG 1 4 18 NPT Spiral Flute Threading Tap. Designed for workshop professionals and metalworkers who demand reliable, accurate pipe thread connections, this tap combines toughness, heat resistance, and efficient chip evacuation for demanding tasks. Material: HSS E (high speed steel with cobalt) for enhanced hardness and heat tolerance during extended use. Coating: Steam Oxide finish that reduces