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T640 • KP6525 Inch Sizes • ANSI HP HSSE-PM taps for thru and blind holes • Cast & Ductile Iron

Beyond™ Straight-Flute HSS-E-PM Taps • Through and Blind Holes

Material Number4035548

ISO Catalog IDT640NF04375-20R3BX-AANSI Catalog IDT640NF04375-20R3BX-A

T640 STFL In Threading - 4035548 - Kennametal
T640 STFL In Threading - 4035548 - Kennametal
T640 STFL In Threading - 4035548 - Kennametal
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T640 STFL In Threading - 4035548 - Kennametal
T640 STFL In Threading - 4035548 - Kennametal
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  • K Cast Iron
  • N Non-Ferrous
  • Tapping: Through HoleTapping: Through Hole
  • Tapping: Blind HoleTapping: Blind Hole
  • Chamfer Form C (2–3)Chamfer Form C (2–3)
  • HSS-E-PMHSS-E-PM
  • Class of Fit: 2BXClass of Fit: 2BX
  • Class of Fit: 3BXClass of Fit: 3BX
  • Flood Coolant: TappingFlood Coolant: Tapping
  • Manufacturer’s Specs: UNFManufacturer’s Specs: UNF
  • Manufacturer’s Specs: UNCManufacturer’s Specs: UNC
  • Manufacturer’s Specs: ANSIManufacturer’s Specs: ANSI
  • Tapping Helix Angle: 0°Tapping Helix Angle: 0°
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Drawing 4035548
Metric
Inch
Material Number4035548
ISO Catalog IDT640NF04375-20R3BX-A
ANSI Catalog IDT640NF04375-20R3BX-A
GradeKP6525
[D1-TDZ] Thread Diameter Size7/16 - 20
[L] Overall Length 80.3 mm
[L] Overall Length 3.16 in
[L3] Thread Length 18 mm
[L3] Thread Length .71 in
[L2] Useable Length 37.8 mm
[L2] Useable Length 1.49 in
[D] Adapter / Shank / Bore Diameter8.204 mm
[D] Adapter / Shank / Bore Diameter.323 in
[Z] Number of Flutes4
Dimension StandardANSI
Thread Tolerance Class ANSI3BX
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Workpiece Materials

  • Cast Iron
  • Non-Ferrous

Uses and application

  • Tapping: Through HoleTapping: Through Hole
  • Tapping: Blind HoleTapping: Blind Hole
  • Chamfer Form C (2–3)Chamfer Form C (2–3)
  • HSS-E-PMHSS-E-PM
  • Class of Fit: 2BXClass of Fit: 2BX
  • Class of Fit: 3BXClass of Fit: 3BX
  • Flood Coolant: TappingFlood Coolant: Tapping
  • Manufacturer’s Specs: UNFManufacturer’s Specs: UNF
  • Manufacturer’s Specs: UNCManufacturer’s Specs: UNC
  • Manufacturer’s Specs: ANSIManufacturer’s Specs: ANSI
  • Tapping Helix Angle: 0°Tapping Helix Angle: 0°

Features and benefits

  • KP6525 TiCN + TiN for cast iron and cast aluminum.

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Tolerance

shank tolerance
D fractionalD inch
.250–.375+0, -.0004
.438–.625+0, -.0004
shank tolerance
Dtolerance h6 + / -
6+0, -0,008
8 10+0, -0,009
12 16+0, -0,011
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CAD Drawings Models

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Product data

SDS

Safety Data Sheets

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Product Name
Material Number
ISO Catalog ID
ANSI Catalog ID
 
DA J series Collet
DA J series Collet
1016532
JTC043
JTC043
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DA K series - Tap Collets
DA K series - Tap Collets
1016533
KTC043
KTC043
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DA L series - Tap Collets
DA L series - Tap Collets
1016584
LTC043
LTC043
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TG75 Solid Tap Collet
TG75 Solid Tap Collet
1017271
75TGST043
75TGST043
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ER Standard Tap Collets • Inch/Metric ANSI
ER Standard Tap Collets • Inch/Metric ANSI
1026429
20ERTC043
20ERTC043
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ER Standard Tap Collets • Inch/Metric ANSI
ER Standard Tap Collets • Inch/Metric ANSI
1026447
25ERTC043
25ERTC043
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ER Standard Tap Collets • Inch/Metric ANSI
ER Standard Tap Collets • Inch/Metric ANSI
1026457
32ERTC043
32ERTC043
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ER Standard Tap Collets • Inch/Metric ANSI
ER Standard Tap Collets • Inch/Metric ANSI
1026477
40ERTC043
40ERTC043
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ER Tension-Only Solid Tap Collets
ER Tension-Only Solid Tap Collets
1080489
25ERTCT043
25ERTCT043
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TG100 Solid Tap Cool Collet
TG100 Solid Tap Cool Collet
1086549
100TGSTC043
100TGSTC043
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