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In order to come up with the Best Threading Dies (2021), our intelligent platforms and experts have taken many parameters into account such as product usability, features that meet buyers needs and give buyer satisfaction, defect-free, conformity of standards, value for money, dependability, level of design standards, quality conformance to user requirements and good practises, protection and safety, actual user satisfaction and lots of others. It is of great importance to mention that each user has different needs so please consider the list below as a guide and not as a gospel. Nevertheless, in the list below you can definitely find the overall best ones despite your needs.

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Best Threading Dies

SaleBest Choice No. 1
EFFICERE 40-Piece Tap and Die Set – SAE Inch Sizes | Essential Threading Tool with Storage Case
  • PREMIUM MATERIAL AND DURABILITY: Industrial grade GCr15 bearing steel construction ensures durability and tool longevity
  • EXCELLENT CUTTING PERFORMANCE: All cutting teeth are precisely CNC machined and accurately heat treated to Rockwell hardness 60 HRC for best threading performance
  • TAPERED TEETH DESIGN: Tapered coarse and fine taps and dies start threading more easily and smoothly, and prevent overthreading
  • ALL-INCLUDED SET: This kit comes with a full range of most popular SAE taps & dies with both coarse and fine sizes, plus all needed wrenches, handles, a gauge and a storage case
  • VERSATILITY AND WIDE APPLICATION: Perfect to create new threads or repair damaged threads on most metals like carbon steel, cast iron, aluminum, brass, copper and stainless steel
SaleBest Choice No. 2
RIDGID 47765 Threading Machine Dies, Right-Handed High-Speed NPT Pipe Dies with Nominal Pipe Size of 1/2-Inch to 3/4-Inch for Universal Die Heads , Red
  • Fits RIDGID NPT universal machine die heads 504A, 711, 713, 811A, 815A, 816, 817 and 842
  • High-Speed threading die for stainless steel
  • Threading dies have capacity of 1/2-inch to 3/4-inch
  • Right-Hand, NPT (National {American} Pipe Tapered) thread
  • RIDGID 47765 NPT dies have 14 TPI (Threads Per Inch)
SaleBest Choice No. 3
Drill America – DWTMHX14X1.5 m14 X 1.5 Carbon Steel Hex Rethreading Die, DWT Series
  • Made of carbon steel
  • Right-hand cut tools have a cutting action that engages when they are run in a clockwise direction
  • Hex die is for dressing over bruised or rusty threads
  • No special holder is required for this type of die, any wrench large enough will suffice
  • Ideal for maintenance in the shop or field
Best Choice No. 4
uxcell M14 X 1.5 Metric Round Die, Machine Thread Left Hand Threading Die, Alloy Steel
  • Round Die: Thread size: M14 X 1.5; outside diameter (OD): 38mm / 1.5″; Thickness: 14mm / 0.55″; fine grinding. Made of alloy steel, hardness and wear-resistance for long service life.
  • Application: Round dies are suitable for general purpose threading. Can process, correct or clean the external threads. Great for maintenance and repair work.
  • Features: Conical locking hole, strong locking and not loose. Perfect for re-threading existing threads in hard materials like metal and making new threads in soft material such as plastic.
  • Easy To Use: The positioning groove of the die should be aligned with the fastening screw in the middle of the die wrench, and the screw should be inserted into the slot of the die and tightened.
  • Tips: It needs to be reversed every 1/4~1/2 turn to facilitate the chip discharge from the chip hole. Suitable lubricating oil should be added to the cutting edge of the die when tapping the thread.
SaleBest Choice No. 5
uxcell M3 X 0.5 Metric Round Die, Machine Thread Left Hand Threading Die, Alloy Steel
  • Round Die: Thread size: M3 X 0.5; outside diameter (OD): 20mm / 0.8″; Thickness: 5mm / 0.2″; fine grinding. Made of alloy steel, hardness and wear-resistance for long service life.
  • Application: Round dies are suitable for general purpose threading. Can process, correct or clean the external threads. Great for maintenance and repair work.
  • Features: Conical locking hole, strong locking and not loose. Perfect for re-threading existing threads in hard materials like metal and making new threads in soft material such as plastic.
  • Easy To Use: The positioning groove of the die should be aligned with the fastening screw in the middle of the die wrench, and the screw should be inserted into the slot of the die and tightened.
  • Tips: It needs to be reversed every 1/4~1/2 turn to facilitate the chip discharge from the chip hole. Suitable lubricating oil should be added to the cutting edge of the die when tapping the thread.
Best Choice No. 6
uxcell 8-32 UNC Round Die, Machine Thread Right Hand Threading Die, Alloy Steel
  • Round Die: Thread size: 8-32 UNC; outside diameter (OD): 20mm / 0.8″; Thickness: 5mm / 0.2″; fine grinding. Made of alloy steel, hardness and wear-resistance for long service life.
  • Application: Round dies are suitable for general purpose threading. Can process, correct or clean the external threads. Great for maintenance and repair work.
  • Features: Conical locking hole, strong locking and not loose. Perfect for re-threading existing threads in hard materials like metal and making new threads in soft material such as plastic.
  • Easy To Use: The positioning groove of the die should be aligned with the fastening screw in the middle of the die wrench, and the screw should be inserted into the slot of the die and tightened.
  • Tips: It needs to be reversed every 1/4~1/2 turn to facilitate the chip discharge from the chip hole. Suitable lubricating oil should be added to the cutting edge of the die when tapping the thread.
Best Choice No. 7
Utoolmart 10-24 UNC Round Die, Machine Thread Right Hand Threading Die, Alloy Tool Steel 1pcs
  • 【Round Die】- Thread size: 10-24 UNC; Accuracy class: 6g. Made of alloy tool steel, hardness and wear-resistance.
  • 【Application】- Round dies are suitable for general purpose threading. Can process, correct or clean the external threads. Ideal for maintenance and repair work.
  • 【Features】- Conical locking hole, strong locking and not loose. Perfect for re-threading existing threads in hard materials like metal and making new threads in soft material such as plastic.
  • 【Easy To Use】- The positioning groove of the die should be aligned with the fastening screw in the middle of the die wrench, and the screw should be inserted into the slot of the die and tightened.
  • 【Tips】- It needs to be reversed every 1/4~1/2 turn to facilitate the chip discharge from the chip hole. Suitable lubricating oil should be added to the cutting edge of the die when tapping the thread.
Best Choice No. 8
Aexit Adjustable Screw Dies 20mm Diameter M3.5-M6 Die Steel Handle Round Hex Threading Dies Stock Holder
  • Product Name: Round Die Stock Holder; Material: Metal,Steel
  • Weight: 77g; Package Content: 1 x Round Die Stock Holder
  • Fit for Round Die Dia: 20mm/0.8″(M3.5-M6); Main Color: Gray
  • Shaft Size: 8mm/0.3″
  • Overall Size: 16 x 3 x 1cm/6.3″ x 1.2″ x 0.4″(L*D*H)
SaleBest Choice No. 9
RIDGID 47745 Threading Machine Dies, Right-Handed Alloy NPT Pipe Dies with Nominal Pipe Size of 1/2-Inch to 3/4-Inches for Universal Die Heads
  • Country Of Origin: United States
  • Model Number: 47745
  • Item Package Dimension: 9.0″ L x 4.5″ W x 0.8″ H
  • Item Package Weight: 1.37 lb
Best Choice No. 10
uxcell 5/8″-11 UNC Round Die, Machine Thread Right Hand Threading Die, Alloy Tool Steel, 2pcs
  • Round Die: Thread size: 5/8″-11 UNC; outside diameter (OD): 38mm / 1.5″; Thickness: 14mm / 0.55″; accuracy class: 6g. Made of alloy tool steel, hardness and wear-resistance.
  • Application: Round dies are suitable for general purpose threading. Can process, correct or clean the external threads. Great for maintenance and repair work.
  • Features: Conical locking hole, strong locking and not loose. Perfect for re-threading existing threads in hard materials like metal and making new threads in soft material such as plastic.
  • Easy To Use: The positioning groove of the die should be aligned with the fastening screw in the middle of the die wrench, and the screw should be inserted into the slot of the die and tightened.
  • Tips: It needs to be reversed every 1/4~1/2 turn to facilitate the chip discharge from the chip hole. Suitable lubricating oil should be added to the cutting edge of the die when tapping the thread.

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