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🛠️ Thread like a pro, last like a legend.
The Century Drill & Tool 93202 combo set features precision-cut 1/4-18 NPT threads and a matching 7/16” drill bit, crafted from heat-treated high-speed steel for superior durability. Optimized for hand tool use and compliant with National Pipe Thread standards, this kit delivers professional-grade threading accuracy and long-lasting performance for plumbers, DIYers, and pros alike.
| ASIN | B0797J88MN |
| Best Sellers Rank | #11,278 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Tap & Die Sets |
| Brand | Century Drill & Tool |
| Brand Name | Century Drill & Tool |
| Customer Reviews | 4.6 out of 5 stars 1,845 Reviews |
| Cutting Angle String | 118 Degrees |
| Cutting Diameter | 1/8" Inches |
| Finish Type | Uncoated |
| Finish Types | Uncoated |
| Global Trade Identification Number | 00081838932022 |
| Included Components | tap & drill bit combo |
| Item Dimensions | 5 x 1.75 x 0.56 inches |
| Item Type Name | 1/4-18 NPT, 7/16" Tap & Drill Combo |
| Item Weight | 1.9 Ounces |
| Manufacturer | Century Drill & Tool |
| Material | High Speed Steel (HSS) |
| Material Type | High Speed Steel (HSS) |
| Minimum Bore Diameter | 0.44 Inches |
| Model | 93202 |
| Number of Flutes | 2 |
| Point Style | Brad Point |
| Shank Type | Straight |
| Surface Recommendation | Alloy Steel |
| Tool Flute Type | Spiral |
| UPC | 081838932022 |
| Unit Count | 1.0 Count |
W**S
10-32 tap set
10-32 tap and correct drill. Great kit. No searching for which drill goes with tap. Worked well multiple times. Reasonable price.
D**.
Great tool set
Works well in 1/4” aluminium plate.
F**E
Clean Threads and Precise Fit—Great for Pipe Work
This combo set is a solid go-to for tapping 1/8-27 NPT threads, especially in aluminum, mild steel, or brass. The 21/64" drill bit is matched perfectly to the tap, giving you clean, tight threads without overcutting. I used it for a custom fuel line setup and the fittings seated beautifully—no leaks, no cross-threading. The tap cuts smoothly with minimal chatter, and the bit stays sharp through multiple holes. Whether you're working on hydraulic lines, coolant ports, or sensor bungs, this set delivers reliable results. It’s a great addition to any mechanic’s or fabricator’s toolbox. Highly recommend for anyone doing plumbing, automotive mods, or precision thread work.
J**I
Worked well
Worked well to drill and tap.
D**D
Drill made a poor quality hole
This review is for the NPT 1/4-18 drill/tap set. The drill does not bore a nice hole at all, even though the metal the bit is made out of seems to be of good quality and it came quite sharp. The tap is of good quality. Overall decent value set, although I'm really not sure what's up with the drill bit. Even though the whole that was drilled wanders a lot, the tap did end up removing enough material so that it was not an issue, other than affecting the tap's square alignment to the hole. I made a video, attached.
D**L
Super sharp and strong. Will buy again
I used it in my drill, tap also, my chuck slipped and didn't even leave a scratch. Really really good strong steel. The drill bit grabbed really hard so its really sharp and digs in. Use almost no pressure on soft metal like aluminum. Thinking of getting a full set of the same brand. Really great quality
P**S
Good quality; Great value!
Excellent quality, used with a good cutting oil and bit is holding up fine. Tap worked well also, installed the zero fittings with no issues.
J**L
Great tool!
Exactly what I needed to rethread my radiator. Perfect size threads for 1/8 radiator valves. Drilled right through the metal radiator. Would be smoother with some lube. Drill bit and threader is very well made.
Trustpilot
1 month ago
3 weeks ago