---
product_id: 69220110
title: "Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo"
brand: "century drill & tool"
price: "€ 24.55"
currency: EUR
in_stock: true
reviews_count: 13
category: "Century Drill & Tool"
url: https://www.desertcart.hr/products/69220110-century-drill-and-tool-93201-1-8-27-npt-21
store_origin: HR
region: Croatia
---

# Heat-treated for max durability Precision-cut 1/8-27 NPT threads Includes perfectly matched 21/64” drill bit Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo

**Brand:** century drill & tool
**Price:** € 24.55
**Availability:** ✅ In Stock

## Summary

> 🛠️ Thread Like a Pro, Last Like a Legend

## Quick Answers

- **What is this?** Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo by century drill & tool
- **How much does it cost?** € 24.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/69220110-century-drill-and-tool-93201-1-8-27-npt-21)

## Best For

- century drill & tool enthusiasts

## Why This Product

- Trusted century drill & tool brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **NPT Standard Compliance:** Meets National Pipe Thread specs for versatile use across plumbing, automotive, and industrial applications.
- • **Hand Tool Optimized Control:** Designed specifically for manual threading, giving you superior accuracy and tactile feedback on every cut.
- • **Built to Last Under Pressure:** Heat-treated and tempered steel ensures exceptional wear resistance for long-lasting performance on tough jobs.
- • **Flawless Threading Precision:** Engineered for exact internal pipe threads that guarantee leak-proof, secure fittings every time.
- • **All-in-One Threading Solution:** Includes the ideal 21/64” drill bit so you’re ready to drill and tap without hunting for extra tools.

## Overview

The Century Drill & Tool 93201 combo set features precision-cut 1/8-27 NPT threads and a perfectly matched 21/64” drill bit, crafted from heat-treated high-speed steel for superior durability. Optimized for hand tool use, it delivers consistent, leak-proof pipe fittings compliant with National Pipe Thread standards—ideal for professionals and DIYers demanding reliable, long-lasting threading performance.

## Description

Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo - desertcart.com

Review: Great tool set - Works well in 1/4” aluminium plate.
Review: 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.

## Features

- Precision-Cut Threads for Exact Pipe Work: Engineered with high-quality cutting edges, this NPT tap produces consistently accurate internal threads, ensuring a tight and secure fit for pipe fittings and threaded connections in a variety of materials.
- Heat Treated for Superior Durability: Tap is fully heat treated and tempered to deliver file-hard threads, improving wear resistance and ensuring longer tool life—even through repeated use in demanding pipe threading tasks.
- Optimized for Hand Cutting Applications: Designed specifically for use with hand tools, this combo pack offers the control and accuracy needed for manual threading projects, making it ideal for DIYers, plumbers, and professionals alike.
- National Pipe Thread Standards for Versatile Use: Built to meet National Pipe Thread specifications, this tap is perfect for creating internal threads on a wide range of pipes, fittings, and plumbing components.
- Includes Matching 21/64” Drill Bit: Set conveniently includes the appropriately sized 21/64” drill bit, providing a complete solution for preparing and threading holes—no need to source additional tools separately.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0797JWQ1R |
| Best Sellers Rank | #12,923 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Tap & Die Sets |
| Brand | Century Drill & Tool |
| Cutting Angle String | 118 Degrees |
| Cutting Diameter | 0.33 Inches |
| Date First Available | January 23, 2018 |
| Finish Type | Steel |
| Global Trade Identification Number | 00081838932015 |
| Item Weight | 1.1 ounces |
| Item dimensions L x W x H | 5 x 1.75 x 0.56 inches |
| Item model number | 93201 |
| Manufacturer | Century Drill & Tool |
| Material | High Speed Steel (HSS) |
| Number of Flutes | 2 |
| Number of Pieces | 2 |
| Product Dimensions | 5 x 1.75 x 0.56 inches |
| Set Name | Tap & Drill Combo |
| Shank Type | Straight |
| Surface Recommendation | Plastic |
| Tool Flute Type | Spiral |
| UPC | 081838932015 |
| Unit Count | 1.0 Count |

## Product Details

- **Cutting Angle String:** 118 Degrees
- **Cutting Diameter:** 0.33 Inches
- **Finish Type:** Steel
- **Material:** High Speed Steel (HSS)
- **Shank Type:** Straight

## Images

![Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo - Image 1](https://m.media-amazon.com/images/I/210qvWG5PjL.jpg)
![Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo - Image 2](https://m.media-amazon.com/images/I/21MS0fwJUgL.jpg)
![Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo - Image 3](https://m.media-amazon.com/images/I/21cCIn1IBXL.jpg)
![Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo - Image 4](https://m.media-amazon.com/images/I/316YXu48y2L.jpg)
![Century Drill & Tool 93201, 1/8-27 NPT/21/64 Combo - Image 5](https://m.media-amazon.com/images/I/31LXYnf+jkL.jpg)

## Questions & Answers

**Q: Where can I purchase a t-handle tap wrench that will accommodate the 21/64 shank size?**
A: Century Drill & Tool offers two options that would fit the 21/64" size.  Our t-handle tap wrench, item 98502, will work.  We also offer an adjustable tap wrench, item 98510, that would work.  Both are available for purchase here on Amazon.com.

**Q: Can this tap 316 stainless steel ?**
A: Hello, our carbon steel taps will cut stainless steel, but please use caution, as stainless steel can work harden. Make sure to use cutting oil and cut slowly.

**Q: For a 1/8 pipe tap my Snap On tap and drill chart calls out for a 11/32 drill bit , but  this says to use a 21/64 bit what is correct?**
A: The correct drill size depends on the thread engagement specification of the tap.  Century taps are rated for ~75% thread engagement, so 21/64 would be the best drill size.  Some taps are rated for ~50% thread engagement and may use a 11/32 drill.

**Q: What is the flute length of the 6-32 tap?**
A: 3/4"  actual threaded cutting length.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great tool set
*by D***. on January 24, 2026*

Works well in 1/4” aluminium plate.

### ⭐⭐⭐⭐⭐ Clean Threads and Precise Fit—Great for Pipe Work
*by F***E on October 14, 2025*

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.

### ⭐⭐⭐⭐⭐ Good quality; Great value!
*by P***S on August 6, 2025*

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.

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**Shop now:** [https://www.desertcart.hr/products/69220110-century-drill-and-tool-93201-1-8-27-npt-21](https://www.desertcart.hr/products/69220110-century-drill-and-tool-93201-1-8-27-npt-21)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-08*