(TD174) HSS-E (M35) UNC Spiral Flute for Steel (TiN Coated)

TiN-Coated HSS-E UNC Spiral Flute Taps for Blind Holes

(TD174) HSS-E (M35) UNC Spiral Flute for Steel (TiN Coated)
$32.78 INC GST $29.80 EX GST
SKU
TD174362
Work materials
PMS

Key features

  • TiN-coated HSS-E construction for steel tapping
  • Spiral flute geometry for blind-hole chip evacuation
  • UNC unified coarse threads with a 60° thread form
Tool material HSS-E
Surface treatment Titanium Nitride
Size
TPI
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Blind-hole chip control

Special flute geometry promotes effective chip evacuation during blind-hole threading.

Steel-focused threading

Recommended for non-alloy, low-alloy, high-alloy and tool steels.

Useful UNC range

Covers common unified coarse thread sizes from #4-40 to 3/4-10 UNC.

SKUSizeTPIThread length (mm)Overall length (mm)Neck length (mm)Shank dia. (mm)Square size (mm)Square length (mm)FlutesTapping drill dia. (mm)CAD filesStock Price Qty Add
TD174362#1224UNC10.080.030.06.04.98.034.5STEPDXF 1-2 Weeks $29.80
TD174322#1024UNC10.070.025.06.04.98.033.9STEPDXF In stock $29.10
TD174282#832UNC8.063.021.04.53.46.033.5STEPDXF 1-2 Weeks $27.50
TD174162#440UNC6.056.018.03.52.76.032.3STEPDXF 1-2 Weeks $34.70
TD1744021/420UNC13.080.030.07.05.58.035.2STEPDXF In stock $29.10
TD1744823/816UNC16.0100.039.09.07.010.038.0STEPDXF In stock $47.30
TD1745621/213UNC20.0110.044.09.07.010.0310.75STEPDXF In stock $57.80
TD1746425/811UNC22.0110.044.012.09.012.0313.5STEPDXF In stock $75.60
TD1747023/410UNC25.0125.050.014.011.014.0416.5STEPDXF In stock $125.90

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Product Description

YG-1 TD174 is a TiN-coated HSS-E UNC spiral flute machine tap for steel. Its special flute geometry evacuates chips effectively when tapping blind holes. Designed for Unified coarse threads, it provides a 60° thread form for compatible UNC work. The TD174 range covers #4-40 UNC through 3/4-10 UNC sizes. YG-1 rates it excellent for non-alloy, low-alloy, high-alloy and tool steels. Suitable applications include steel components requiring blind-hole thread cutting in holes up to 2.5×D. Each tap has three flutes, supporting the listed chip evacuation design. The TiN surface treatment completes the dedicated steel-tapping configuration. Available thread sizes suit a practical selection of common coarse-threaded steel components.

  • TiN-coated HSS-E construction for steel tapping
  • Spiral flute geometry for blind-hole chip evacuation
  • UNC unified coarse threads with a 60° thread form
  • Three-flute design throughout the TD174 range
  • Recommended excellent for non-alloy low-alloy high-alloy and tool steels
  • Size selection from #4-40 UNC to 3/4-10 UNC
Product Data
Chamfer Lead Form C
Hole Type Blind
Spiral Flute Angle 40°
Standard DIN 371 / 376
Surface Treatment Titanium Nitride, Titanium Nitride Coating
Thread Angle 60°
Thread Class 2B
Thread Shape UNC
Tool Material HSS-E
EDP No. Size TPI Thread Length Overall Length Neck Length Shank Diameter Square Size Square Length No. of Flute TD174162 #4 40 6 56 18 3.5 2.7 6 3 TD174202 #5 40 7 56 18 3.5 2.7 6 3 TD174242 #6 32 7 56 20 4 3 6 3 TD174282 #8 32 8 63 21 4.5 3.4 6 3 TD174322 #10 24 10 70 25 6 4.9 8 3 TD174362 #12 24 10 80 30 6 4.9 8 3 TD174402 1/4 20 13 80 30 7 5.5 8 3 TD174442 5/16 18 14 90 35 8 6.2 9 3 TD174482 3/8 16 16 100 39 9 7 10 3 TD174522 7/16 14 17 100 40 8 6.2 9 3 TD174562 1/2 13 20 110 44 9 7 10 3 TD174602 9/16 12 20 110 44 11 9 12 3 TD174642 5/8 11 22 110 44 12 9 12 3 TD174702 3/4 10 25 125 50 14 11 14 4 TD174742 7/8 9 27 140 54 18 14.5 17 4 TD174782 1" 8 30 160 60 20 16 19 4 TD174822 1-1/8 7 35 180 65 22 18 21 4

Work materials

VDI 3323 recommendations for this tool.

ExcellentGood

Steel

9 grades
Non-alloy steel
ExcellentVDI 5
GoodVDI 2–4
Low-alloy steel
ExcellentVDI 8–9
GoodVDI 6–7
High-alloy and tool steel
GoodVDI 10

Superalloys & titanium

2 grades
Heat-resistant superalloys
GoodVDI 31
Titanium alloys
GoodVDI 36

Stainless steel

1 grade
Stainless steel
GoodVDI 14
VDI grade reference12 grades

Individual grade ratings and nominal hardness references. Base grades and decimal subgrades are listed separately.

Recommended VDI grades and nominal hardness references
VDIWork materialRecommendationHB ref.HRC ref.
2PNon-alloy steelGood19013
3PNon-alloy steelGood25025
4PNon-alloy steelGood27028
5PNon-alloy steelExcellent30032
6PLow-alloy steelGood18010
7PLow-alloy steelGood27529
8PLow-alloy steelExcellent30032
9PLow-alloy steelExcellent35038
10PHigh-alloy and tool steelGood20015
14MStainless steelGood18010
31SHeat-resistant superalloysGood20015
36STitanium alloysGood--

HB and HRC values are nominal catalogue references. Grade subdivisions can vary between catalogues.

Recommendations apply to the listed VDI grades. Unlisted grades have no stated recommendation.

EDP No. Size TPI Thread Length Overall Length Neck Length Shank Diameter Square Size Square Length No. of Flute TD174162 #4 40 6 56 18 3.5 2.7 6 3 TD174202 #5 40 7 56 18 3.5 2.7 6 3 TD174242 #6 32 7 56 20 4 3 6 3 TD174282 #8 32 8 63 21 4.5 3.4 6 3 TD174322 #10 24 10 70 25 6 4.9 8 3 TD174362 #12 24 10 80 30 6 4.9 8 3 TD174402 1/4 20 13 80 30 7 5.5 8 3 TD174442 5/16 18 14 90 35 8 6.2 9 3 TD174482 3/8 16 16 100 39 9 7 10 3 TD174522 7/16 14 17 100 40 8 6.2 9 3 TD174562 1/2 13 20 110 44 9 7 10 3 TD174602 9/16 12 20 110 44 11 9 12 3 TD174642 5/8 11 22 110 44 12 9 12 3 TD174702 3/4 10 25 125 50 14 11 14 4 TD174742 7/8 9 27 140 54 18 14.5 17 4 TD174782 1" 8 30 160 60 20 16 19 4 TD174822 1-1/8 7 35 180 65 22 18 21 4

YG Tap Steel

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