Tap Sets

Tap Sets — Metric, UNC, UNF & BSP Threading Tools for Workshop & Trade

AIMS Industrial stocks a comprehensive range of tap sets for cutting internal threads in steel, aluminium, cast iron, and engineering plastics. Our range from Sutton Tools, Bordo, Goliath, and P&N covers Metric, UNC, UNF, BSPF, and BSW thread forms — in hand tap sets, straight flute machine tap sets, and taper/intermediate/bottoming combinations for hand tapping and CNC applications.

Tap Set Types & Thread Standards

• Metric Straight Flute Tap Sets (ISO529): Sutton Tools T901 Metric HSS straight flute tap sets are manufactured to ISO529 dimensions — covering M3 to M12 metric coarse pitch in a complete range set for engineering workshop and maintenance use.
• Metric Hand Tap Sets (Taper/Int/Bottom): Sutton Tools M203 and M243 metric hand tap sets include all three tap styles (taper, intermediate, and bottoming) for complete through-hole and blind-hole threading — tungsten chrome construction for extended tool life in steel and cast iron.
• UNC Tap Sets: Sutton Tools T903 UNC (Unified National Coarse) straight flute tap sets cover imperial coarse thread forms for maintenance of American-standard fastener threads in imported equipment, tooling, and machinery.
• UNF Tap Sets: Sutton Tools T904 UNF (Unified National Fine) tap sets are designed for fine-pitch imperial threads where higher tensile strength and vibration resistance are required — typical in aerospace, automotive, and precision instrument applications.
• BSP & BSW Tap Sets: Sutton Tools BSPF and BSW hand tap sets cover British Standard Pipe and Whitworth thread forms — essential for maintenance and repair of older Australian and UK-origin plant, hydraulic fittings, and fluid system components.
• Bordo & Goliath Tap Sets: Bordo and Goliath metric and imperial tap sets provide alternative sizing and value options — stocked for workshop replenishment and trade use across a full range of thread standards.

Tap Set Selection & Tapping Technique

• Tap Type for Application: Taper taps start the thread and are used first in through-holes; intermediate taps continue threading; bottoming taps cut to the base of blind holes where full thread depth is required. Use all three in sequence for blind-hole threading.
• Thread Pitch Selection: Always verify metric coarse vs. fine pitch, and imperial TPI, before selecting a tap — mismatched tap pitch on existing threads destroys the thread form and may require helicoil insertion to recover the fastener hole.
• Cutting Speed & Lubrication: Use tapping compound or cutting fluid on all HSS taps — dry tapping in steel dramatically shortens tap life and risks tap breakage. In aluminium, a light oil or kerosene/oil mix prevents built-up edge on tap flutes.
• Drill Size Compatibility: Always use the correct drill size for the selected tap — under-drilling leaves insufficient material removal room and breaks taps; over-drilling produces undersized, weak threads. Drill size charts are available from Sutton Tools for all thread standards.

Australian Business, Local Supply: As a proudly Australian business since 1988, we stock locally and work with trusted local Australian manufacturers and distributors to ensure fast, reliable supply.

Shop the full range above, or contact our team for expert advice on the right product for your application or reach out if you need a quote. Fast dispatch from our Australian warehouse.