Buyers threading 3/8 to 18 NPT pipe fittings who want a well reviewed IRWIN tap.
Skip if
Skip if your job calls for a different NPT size, since this tap is listed specifically for 3/8 to 18 NPT.
Material Plastic
Finish Brushed
Weight 1.6 ounces
Size 3/8" - 18NPT
Priced 14% above the category median ($15.83 across 9 tracked models)
Our scorecard
4.6/5overall
Owner rating4.7/5
4.7 average across 217 owner ratings
Popularity2.2/5
217 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other hand tools and workshop hand tools we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The IRWIN 1904ZR is sized for 3/8 inch to 18 NPT threads, with a brushed finish, weighing 1.6 ounces and priced at $17.99.
The listing's material spec reads Plastic, which is unusual for a pipe tap meant to cut metal threads, so it is worth confirming that detail with the seller before you buy if it matters for your job.
It holds a 4.7 star rating from 217 reviews, one of the stronger review counts among the pipe taps in this roundup. No monthly purchase count is listed.
Pros
4.7 star rating from 217 reviews, a strong feedback base for this price.
Brushed finish and sized specifically for 3/8-18 NPT threads.
Light at 1.6 ounces, easy to fit in a tool bag.
Made by IRWIN, a recognized threading tool brand.
Cons
The listing's material spec reads Plastic, which is worth confirming with the seller before you rely on it for metal pipe threading.
No monthly purchase count is listed for recent demand.
Limited to the 3/8-18 NPT size, not a multi size set.
Specifications
Material
Plastic
Finish
Brushed
Weight
1.6 ounces
Size
3/8" - 18NPT
Performance notes
Sized for 3/8 inch to 18 NPT with a brushed finish, the 1904ZR weighs in at 1.6 ounces. The material spec on the listing reads Plastic, which is unusual for a pipe tap meant to cut metal threads, so confirm the exact spec with the seller before you buy if that detail matters to your job.
What buyers say
217 reviews back a 4.7 star average, one of the stronger review counts among the pipe taps in this list.
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