Size:3 Flute, H1 Tolerance, #4-40 Thread Size  |  Style:Taper Chamfer The Union Butterfield 1528(UNC)/1528(UNF)/1528(UNS) uncoated, high-speed steel hand threading tap has straight flutes and a round shank with a square end, and is used to create machine-screw sized right-hand threads in a range of materials. It is available in three different ANSI thread specification standards: UNC (Unified Coarse), UNF (Unified Fine), or UNS (Unified Special). The straight flutes are suitable for threading through holes (extending through the workpiece) and blind or bottoming holes (with only one opening). Machine-screw sizes are used frequently in many industries and products. Right-hand threads are designed to tighten when the head or nut is rotated clockwise (the most common threading direction). High-speed steel (HSS) is a common general-purpose steel for cutting tools and is compatible with a variety of materials. With no coating or surface treatment, this uncoated tool can be used on a broad range of materials and provides an economical alternative to coated tools. The round shank with square end makes it suitable for hand or power-driven applications. This tool can be used in machines, such as drill presses or lathes, or with hand tools such as tap wrenches. In the Union Butterfield 1528(UNC) series, taps that are machine-screw size 1 have two flutes; sizes 2 through 6 are available in two or three flutes; sizes 8 and 10 are available with two, three, or four flutes; and size 12 has 4 flutes. In the 1528(UNF) series, taps that are sizes 0 and 1 have two flutes; sizes 2, 3, and 4 have three flutes; sizes 5 and 6 are available in two and three flutes; size 8 has four flutes; size 10 is available in two, three, and four flutes; and size 12 has four flutes. UB 1528(UNS) taps are available in size 4, with three flutes. Taps in these series are available with a variety of chamfers. This tap conforms to ANSI standards and can create threads to a depth 1 ½ times its diameter. It is suitable for ANSI 2B and 3B tolerance classes: 2B is an average quality fit for commercial and industrial fasteners; 3B produces close-tolerance fasteners that resist loosening, as in aerospace applications. Taps produce internal threads in previously formed holes and can be used in machines (such as drill presses) or with hand tools. Common types of taps include hand taps, spiral point taps, spiral flute taps, thread forming taps, and pipe taps. Hand taps (straight-flute taps) collect chips in the straight flutes of the tool; spiral point taps push chips through holes ahead of the tool; and spiral flute taps pull chips back from the tip of the tool, up and out the hole. Thread forming taps, also known as cold forming taps, press rather than cut to create threads in a drilled hole, and no chips are created. Pipe taps create threads in pipes and pipe fittings. Each thread type designates a thread profile and each type is identified with an abbreviation. In the U.S. and Canada, the Unified Thread Standard is the dominant thread type, including UNC (Unified Coarse), UNF (Unified Fine), and NPT (National Pipe Taper) threads, among others. Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.
A**R
Solved my problem!
I used this tap to install a trailer hitch on a 9-year-old 2004 Toyota Sienna. I spent more time than I'm willing to admit to in public with liquid wrench, wire bushes, and a real wrench trying to get the threads cleared. I ordered this tap, and was able to clear all 6 holes in just a few minutes. This tapered tap found the threads under the corrosion with only a little bit of gentle finagling. I have a sliding-bar tap wrench, and was able to turn it with one hand in a confined space using one hand. If I'd had a proper tap like this one when I started, I could have saved myself a lot of time and frustration.
P**K
Now THIS is a tap!
I bought this thing to tap the ends of some aluminum extrusions on the advice of someone who said that this particular tap was a cut above others and would greatly speed the task. I figured a tap is a tap is a tap, but I bought it anyway, and boy, am I glad I did! This tap really slices through the aluminum with a minimum of effort. I got the job done very quickly. Definitely a worthwhile addition to your toolbox.
T**R
Good quality tap
Not a lot to say except that this tap did exactly what it was supposed to do, I used it to clean up some damaged threads on a stainless steel fitting on my sailboat and it worked fine. Seems to be of good quality.
S**V
Really great tap!
This effortlessly cut through the steel on a firearm receiver. It was kind of scary actually because I was constantly afraid I was going to tap the whole too deep. In the end though it was perfect!
P**D
Great Value For Occasional Use
I have been a Precision Machinist for forty years. This tap is fine for limited use. If you foresee a need for a more durable high usage tap, I would recommend a Cobalt, coated tap. Like driving a car, you need to use it with caution and proper technique. Or it will surely bite you, and break.
K**S
It cleaned up the threads as it should.
The quality of this tap is great. It cleaned up the threads of a number of nuts and made them easy to install again. Used it on the lug nuts of my tractor which had become difficult to move even with a air hammer. Now, I can spin them with my fingers. Time will tell if the tap will hold its edge.
I**I
Very fast, clean threads.
I have a three-flute 5mm tap that I got from Tacoma screw that I use for tapping holes. I got this unit due to glowing reviews in the RepRap community. They were right -- this thing threads with less force and faster than my existing tap. It goes in straighter, and I don't feel the need to correct the hole path as I do with my other tap. I use it to thread Misumi 2020/2040 Aluminum rails, and it works a champ.
H**N
Wrong pitch; product description incorrect for manufacturer product number.
Purchased this tap and it does not match the description M2.3 x 0.45.The tap received was M2.3 x 0.40. The product number in the Amazon listing matches M2.3 x 0.40, the description is incorrect. According to the UB catalog the correct item number for a comparable M2.3 x 0.45 tap is 0094198 not 1012421.The 0.40 pitch tap is ANSI standard, UB series 1700(M).A 0.45 pitch tap is ISO standard, UB series E500.
Trustpilot
2 months ago
1 day ago
