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FAQs

Establish the thread standard first, then the size, then the holder. Metric, BSP and imperial threads differ in pitch and flank angle and cannot be substituted for one another.

One that takes the square drive on the tap shank. The bar type wrenches here cover 2.50 to 12.00mm, 4.25 to 14.40mm, 4.25 to 17.70mm and 6.80 to 23.25mm between them.

A bar type gives even pressure from both hands, which helps start a tap square. A ratchet wrench turns without repositioning, which is what allows a tap to be run where a full bar turn is impossible.

On the outside diameter of the die, not on the thread it cuts. The three screw pattern holders here take 13/16 inch and 1 inch dies, so the die is checked against the holder.

Yes, it is a separate standard with a taper, and it is covered by dedicated ratchet pipe threading kits at 7 pieces in metric and imperial rather than by a general tap and die set.

A 45 piece metric tap and die set covers the common sizes for general workshop work, with individual taps, dies and holders bought as particular threads are met.

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Threading

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Thread standard comes before size and the two are not interchangeable. Metric, BSP and imperial threads differ in pitch and flank angle, so a metric tap will not cut a usable BSP thread even where the diameters look similar. Establishing the standard first avoids a hole that no fastener fits. The flank angle is the part that cannot be seen by eye, which is why the standard is read rather than guessed.

Taps cut internal threads and dies cut external ones, and each needs a holder that will take it. Tap wrenches are sized on the square drive of the tap shank, running 2.50 to 12.00mm, 4.25 to 14.40mm, 4.25 to 17.70mm and 6.80 to 23.25mm on the bar type wrenches here.

Wrench action changes how the tap is turned. A bar type wrench gives even pressure from both hands, which matters when starting a tap square. A ratchet wrench turns without repositioning, which is what allows a tap to be run where there is no room for a full turn of the bar. Ratchet tap wrenches here cover M3 to M8 and M5 to M12 by the tap size rather than by drive.

Die holders are sized on the outside diameter of the die rather than the thread, at 13/16 inch and 1 inch on the three screw pattern holders here. Pipe threading is a separate standard again, covered by metric and imperial ratchet kits at 7 pieces. Questions go over WhatsApp on 07754288583 with the thread being cut.

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  • Sealey AK3076 Tap & Die Set 76pc Metric Split Dies

    Sealey AK3076 Tap & Die Set 76pc Metric Split Dies

    Model No AK3076
    Brand Sealey
    Contents Taps & Dies; Coarse - 3 x 0.5, 3.5 x 0.6, 4 x 0.7, 4.5 x 0.75, 5 x 0.8, 6 x 1, 8 x 1.25, 10 x 1.5, 12 x 1.75mm, Fine - 2 x 0.25, 3 x 0.35, 4 x 0.5, 5 x 0.5, 6 x 0.75, 8 x 1, 10 x 1.25, 12 x 1.25mm, Taper & Plug Tap & Die; 1/8"BSP, HSS Drill Bits; 1.7, 2.5, 2.6, 2.9, 3.3, 3.5, 3.8, 4.2, 4.5, 5, 5.3, 6.8, 7, 8.5, 8.8, 10.3, 10.7mm, Tap Wrench, T-Bar Tap Wrench, Die Holder, Thread Gauge, Screwdriver
    Nett Weight 3.4kg
    £135.05 £132.40
    2% OFF
    Free delivery in UK Mainland
  • Sealey AK303 Tap & Die Set 45pc Metric

    Sealey AK303 Tap & Die Set 45pc Metric

    Model No AK303
    Brand Sealey
    Contents Taps & Dies; 6 x 0.75, 6 x 1, 8 x 1, 8 x 1.25, 10 x 1.25, 10 x 1.5, 12 x 1.5, 12 x 1.75, 14 x 1.5, 14 x 2, 16 x 1.5, 16 x 2, 18 x 1.5, 18 x 2.5, 20 x 1.5, 20 x 2.5, 22 x 1.5, 22 x 2.5, 24 x 1.5, 24 x 3mm, Tap Wrench, Die Holder, T-Bar Type Tap Wrench, Screwdriver, Spacer
    Nett Weight 6.43kg
    £139.64 £136.90
    2% OFF
    Free delivery in UK Mainland
  • Sealey AK303IMP Tap & Die Set 45pc Imperial Split Dies Alloy Steel

    Sealey AK303IMP Tap & Die Set 45pc Imperial Split Dies Alloy Steel

    Model No AK303IMP
    Brand Sealey
    Contents Taps & Dies; National Fine - 1/4" x 28, 5/16" x 24, 3/8" x 24, 7/16" x 20, 1/2" x 20, 9/16" x 18, 5/8" x 18, 3/4" x 16, 7/8" x 14, 1" x 14, National Coarse - 1/4" x 20, 5/16" x 18, 3/8" x 16, 7/16" x 14, 1/2" x 13, 9/16" x 12, 5/8" x 11, 3/4" x 10, 7/8" x 9, 1" x 8, Tap Wrench, Die Holder, T-Bar Type Tap Wrench, Screwdriver, Spacer
    Nett Weight 6.20kg
    £139.64 £136.90
    2% OFF
    Free delivery in UK Mainland
  • Sealey PTK993 Pipe Threading Kit 1/4

    Sealey PTK993 Pipe Threading Kit 1/4" to 1-1/4" BSPT

    Model No PTK993
    Brand Sealey
    Contents Ratchet Die Stock, Dies; 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", #2 10-60mm Pipe Cutter, 1" Bent Nose Pipe Wrench, 0.1mm x 26mm x 20m Teflon Tape, 2-Piece Handle, Water Pump Pliers
    Length 730mm
    Nett Weight 10.50kg
    £151.70 £148.73
    2% OFF
    Free delivery in UK Mainland
  • Sealey AK3086HIM Tap & Die Set Metric & Imperial 86pc

    Sealey AK3086HIM Tap & Die Set Metric & Imperial 86pc

    Model No AK3086HIM
    Brand Sealey
    Contents Metric Taps & Dies; M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1, M7 x 1, M8 x 1, M8 x 1.25, M9 x 1.25, M10 x 1.5, M10 x 1.25, M11 x 1.5, M11 x 1.25, M12 x 1.5, M12 x 1.75, M14 x 2, M14 x 1.5, M16 x 2, M16 x 1.5, Imperial Taps & Dies; 1/2”-13, 1/2"-20, 1/4"-20, 1/4"-28, 1/8”-27, 3/8”-16, 3/8”-24, 5/8”-11, 5/8”-18, 5/16”-18, 16”-24, 7/16”-14, 7/16”-20, 9/16”-12, 9/16”-18, 4-40, 6-32, 8-32, 10-24, 10-32, 12-24, T-handled Tap Wrench, Double-Ended Tap Wrench, Die Handle, Metric & Imperial, Screwdriver.
    Nett Weight 5.26kg
    £158.67 £155.56
    2% OFF
    Free delivery in UK Mainland
  • Sealey AK30110 Tap & Die Set Metric 110pc

    Sealey AK30110 Tap & Die Set Metric 110pc

    Model No AK30110
    Brand Sealey
    Contents:Fine Thread Taps: 6 x 0.75, 7 x 0.75, 8 x 0.75, 9 x 0.75, 10 x 0.75, 10 x 1, 11 x 0.75, 11 x 1, 12 x 0.75, 12 x 1, 14 x 1, 14 x 1.25, 16 x 1mm,Standard Metric Taps: 2 x 0.4, 3 x 0.5, 4 x 0.7, 5 x 0.8, 6 x 1, 7 x 1, 8 x 1, 8 x 1.25, 9 x 1, 9 x 1.25, 10 x 1.25, 10 x 1.5, 11 x 1.25, 11 x 1.5, 12 x 1.25, 12 x 1.5, 12 x 1.75, 14 x 1.5, 14 x 2, 16 x 1.5, 16 x 2, 18 x 1.5mmDies: 2 x 0.4, 3 x 0.5, 4 x 0.7, 5 x 0.8, 6 x 0.75, 6 x 1, 7 x 0.75, 7 x 1, 8 x 0.75, 8 x 1, 8 x 1.25, 9 x 0.75, 9 x 1, 9 x 1.25,10 x 0.75, 10 x 1, 10 x 1.25, 10 x 1.5, 11 x 0.75, 11 x 1, 11 x 1.25, 11 x 1.5, 12 x 0.75, 12 x 1, 12 x 1.25, 12 x 1.5, 12 x 1.75, 14 x 1, 14 x 1.25, 14 x 1.5, 14 x 2, 16 x 1.0, 16 x 1.5, 16 x 2., 18 x 1.5 and double-ended tap wrench (x2), tap wrench with screw retention (x2), T-type tap wrench.
    Nett Weight 5.66kg
    £173.51 £170.11
    2% OFF
    Free delivery in UK Mainland
  • Draper 83810 Coarse Circular Die, 1
    Out of Stock
  • Draper 79198 Metric Hexagon Die Nut Set (5 Piece)
    Out of Stock
  • Draper 79201 Metric Tap and Die Set (10 Piece)
    Out of Stock
  • Draper 83234 Tap and Die Set (21 Piece)
    Out of Stock
Showing 91 to 100 of 100 entries
FAQs

Establish the thread standard first, then the size, then the holder. Metric, BSP and imperial threads differ in pitch and flank angle and cannot be substituted for one another.

One that takes the square drive on the tap shank. The bar type wrenches here cover 2.50 to 12.00mm, 4.25 to 14.40mm, 4.25 to 17.70mm and 6.80 to 23.25mm between them.

A bar type gives even pressure from both hands, which helps start a tap square. A ratchet wrench turns without repositioning, which is what allows a tap to be run where a full bar turn is impossible.

On the outside diameter of the die, not on the thread it cuts. The three screw pattern holders here take 13/16 inch and 1 inch dies, so the die is checked against the holder.

Yes, it is a separate standard with a taper, and it is covered by dedicated ratchet pipe threading kits at 7 pieces in metric and imperial rather than by a general tap and die set.

A 45 piece metric tap and die set covers the common sizes for general workshop work, with individual taps, dies and holders bought as particular threads are met.

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