(TC144) HSS-E (M35) UNC Spiral Flute Tap for General Purpose

HSS-E UNC spiral flute tap for blind holes

YG-1 TC144 series illustration · transparent
$18.26 INC GST $16.60 EX GST
SKU
TC144362
Work materials
PMKN

Key features

  • HSS-E UNC machine tap for general-purpose threading
  • R40 spiral flutes support chip evacuation
  • Suitable for blind and through-hole tapping
Tool material HSS-E
Surface treatment Bright
Size
TPI
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Blind-hole capability

R40 spiral flutes support chip evacuation for blind-hole threading up to 2.5×D.

UNC thread range

Covers common UNC sizes from #4-40 through to 1-1/8-7.

Standardised shanks

DIN 371 and DIN 376 formats support compatible machine-tapping setups.

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
TC144362#1224UNC10.080.030.06.04.98.034.5STEPDXF Low stock $16.60
TC144322#1024UNC10.070.025.06.04.98.033.9STEPDXF In stock $16.60
TC144282#832UNC8.063.021.04.53.46.033.5STEPDXF In stock $16.60
TC144202#540UNC7.056.018.03.52.76.032.6STEPDXF In stock $16.00
TC144162#440UNC6.056.018.03.52.76.032.3STEPDXF 1-2 Weeks $20.00
TC1444021/420UNC13.080.030.07.05.58.035.2STEPDXF In stock $16.60
TC1444425/1618UNC14.090.035.08.06.29.036.6STEPDXF In stock $21.40
TC1444823/816UNC16.0100.039.09.07.010.038.0STEPDXF In stock $31.90
TC1445227/1614UNC17.0100.040.08.06.29.039.4STEPDXF In stock $34.70
TC1445621/213UNC20.0110.044.09.07.010.0310.75STEPDXF In stock $34.70
TC1446029/1612UNC20.0110.044.011.09.012.0312.25STEPDXF In stock $48.80
TC1446425/811UNC22.0110.044.012.09.012.0313.5STEPDXF In stock $62.80
TC1447023/410UNC25.0125.050.014.011.014.0416.5STEPDXF In stock $92.70
TC1447427/89UNC27.0140.054.018.014.517.0419.5STEPDXF In stock $132.50
TC14478218UNC30.0160.060.020.016.019.0422.25STEPDXF In stock $189.80
TC1448221-1/87UNC35.0180.065.022.018.021.0425.0STEPDXF Low stock $272.50

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Product Description

YG-1 TC144 HSS-E UNC spiral flute taps are bright-finish machine taps for general-purpose blind-hole threading. Their R40 spiral flute geometry supports chip evacuation during blind-hole tapping operations. A C chamfer lead helps establish the thread before full cutting engagement. This HSS-E series is rated for blind holes with depths up to 2.5×D. Spiral flute geometry also supports tapping blind and through holes where chip evacuation is required. UNC sizes span #4-40 to 1-1/8-7 for compatible machine-tapping requirements. DIN 371 applies through 3/8, with DIN 376 applied from 7/16 upward. TC144 combines HSS-E construction, R40 spiral flutes and a bright surface treatment.

  • HSS-E UNC machine tap for general-purpose threading
  • R40 spiral flutes support chip evacuation
  • Suitable for blind and through-hole tapping
  • Rated for blind holes up to 2.5×D
  • Bright surface treatment
  • UNC sizes from #4-40 to 1-1/8-7
Product Data
Chamfer Lead Form C
Hole Type Blind
Spiral Flute Angle 40°
Standard DIN 371 / 376
Surface Treatment Bright
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 TC144162 #4 40 6 56 18 3.5 2.7 6 3 TC144202 #5 40 7 56 18 3.5 2.7 6 3 TC144242 #6 32 7 56 20 4 3 6 3 TC144282 #8 32 8 63 21 4.5 3.4 6 3 TC144322 #10 24 10 70 25 6 4.9 8 3 TC144362 #12 24 10 80 30 6 4.9 8 3 TC144402 1/4 20 13 80 30 7 5.5 8 3 TC144442 5/16 18 14 90 35 8 6.2 9 3 TC144482 3/8 16 16 100 39 9 7 10 3 TC144522 7/16 14 17 100 40 8 6.2 9 3 TC144562 1/2 13 20 110 44 9 7 10 3 TC144602 9/16 12 20 110 44 11 9 12 3 TC144642 5/8 11 22 110 44 11 9 12 3 TC144702 3/4 10 25 125 50 14 11 14 4 TC144742 7/8 9 27 140 54 18 14.5 17 4 TC144782 1" 8 35 180 60 22 18 21 4 TC144822 1-1/8 7 35 180 65 22 18 21 4

Work materials

VDI 3323 recommendations for this tool.

ExcellentGood

Steel

8 grades
Non-alloy steel
ExcellentVDI 2–4
GoodVDI 1, 5
Low-alloy steel
ExcellentVDI 6–7
GoodVDI 8

Cast iron

2 grades
Nodular cast iron
ExcellentVDI 17–18

Stainless steel

2 grades
Stainless steel
GoodVDI 12–13

Non-ferrous materials

6 grades
Wrought aluminium
GoodVDI 21
Cast aluminium
ExcellentVDI 25
GoodVDI 23–24
Copper, bronze and brass
ExcellentVDI 28
GoodVDI 26
VDI grade reference18 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.
1PNon-alloy steelGood125-
2PNon-alloy steelExcellent19013
3PNon-alloy steelExcellent25025
4PNon-alloy steelExcellent27028
5PNon-alloy steelGood30032
6PLow-alloy steelExcellent18010
7PLow-alloy steelExcellent27529
8PLow-alloy steelGood30032
12MStainless steelGood20015
13MStainless steelGood24023
17KNodular cast ironExcellent1603
18KNodular cast ironExcellent25025
21NWrought aluminiumGood60-
23NCast aluminiumGood75-
24NCast aluminiumGood90-
25NCast aluminiumExcellent130-
26NCopper, bronze and brassGood110-
28NCopper, bronze and brassExcellent100-

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.

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EDP No. Size TPI Thread Length Overall Length Neck Length Shank Diameter Square Size Square Length No. of Flute TC144162 #4 40 6 56 18 3.5 2.7 6 3 TC144202 #5 40 7 56 18 3.5 2.7 6 3 TC144242 #6 32 7 56 20 4 3 6 3 TC144282 #8 32 8 63 21 4.5 3.4 6 3 TC144322 #10 24 10 70 25 6 4.9 8 3 TC144362 #12 24 10 80 30 6 4.9 8 3 TC144402 1/4 20 13 80 30 7 5.5 8 3 TC144442 5/16 18 14 90 35 8 6.2 9 3 TC144482 3/8 16 16 100 39 9 7 10 3 TC144522 7/16 14 17 100 40 8 6.2 9 3 TC144562 1/2 13 20 110 44 9 7 10 3 TC144602 9/16 12 20 110 44 11 9 12 3 TC144642 5/8 11 22 110 44 11 9 12 3 TC144702 3/4 10 25 125 50 14 11 14 4 TC144742 7/8 9 27 140 54 18 14.5 17 4 TC144782 1" 8 35 180 60 22 18 21 4 TC144822 1-1/8 7 35 180 65 22 18 21 4

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