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Wiseman Threading Tools Taper Lead Metric HSS Tap Left Hand - M30x1
| Thread Form | Metric |
| Size | M30 |
| Pitch | 1 |
| Tap Type | Taper Lead Tap |
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Description

Introducing the Wiseman Threading Tools Taper Lead Metric HSS Tap Left Hand - M30x1. Built with high-speed steel and precision ground, this general‑purpose tap is designed to cut clean, accurate left‑hand threads in metal parts that require reverse‑rotation fasteners. Uncoated for direct workpiece contact and efficient chip clearance, it adheres to ISO 529 dimensions for dependable compatibility with standard M30x1 threads.
Key benefits and what it means for your projects:
- Left-hand thread capability: Create or repair internal left‑hand threads that mate with left‑hand fasteners, making it ideal for torque‑reverse assemblies, anti‑backout features, and specific machine designs.
- Taper lead design: The gradual engagement at the start of the cut reduces entry torque and helps align the thread with the hole, minimizing cross‑threading and driver chatter.
- ISO 529 compliant: Ensures predictable results with standard metric terminations; M30x1 threads are matched precisely for fast, reliable assembly.
- High‑speed steel, uncoated: A robust combination for general‑purpose tapping across steel, cast iron, and many sturdy alloys; ground surfaces deliver consistent chip formation and thread quality.
- Versatile usage: Use in manual tapping with a proper tap wrench or in machines with a suitable chuck or collet; excellent for repairs in maintenance, fabrication, or assembly lines.
Practical tips for best results:
- Lubricate with tapping oil or light cutting fluid to reduce heat buildup and extend tool life.
- Ensure the hole is prepped with a suitable pilot to guide the threading tool and prevent misalignment.
- Maintain steady, even feeds and avoid forcing the tap; back off to break chips when finishing each pass.
- After tapping, clean the threads and inspect for straightness and thread engagement to ensure a secure fit with the corresponding fastener.
Who benefits most from this Wiseman left-handed M30x1 tap? Machinists, maintenance technicians, and workshop professionals dealing with large‑diameter left‑hand threads in components like gear housings, hydraulic fittings, and heavy equipment assemblies. When reliability and exact thread form matter, this tap delivers consistent performance, longevity, and repeatable results—especially in environments where reverse‑thread components govern critical assembly or disassembly steps.
Choose Wiseman for a trusted, precision tool that supports real‑world projects—from service calls to factory floor tasks. Invest in a tool that pairs robust construction with precise threading, giving you the confidence to tackle left‑hand threading jobs with accuracy and ease.
Part Numbers
- Protool Part Number
- T16455LH4T
- Brand
- Wiseman
- Category
- Hand Tap
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.
Full Range: Wiseman Threading Tools Taper Lead Metric HSS Taps Left Hand
View full collection →You are viewing T16455LH4T. Click any other SKU to view its full details.
| Product SKU | Thread Form | Size | Pitch | Tap Type | Thread Direction | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| T10155LH4T | Metric | M2 | 0.4 | Taper Lead Tap | Left Hand | £18.11 | 1-2 days | |
| T10405LH4T | Metric | M2.5 | 0.45 | Taper Lead Tap | Left Hand | £17.92 | 1-2 days | |
| T10555LH4T | Metric | M3 | 0.5 | Taper Lead Tap | Left Hand | £11.41 | 1-2 days | |
| T10755LH4T | Metric | M3.5 | 0.6 | Taper Lead Tap | Left Hand | £12.65 | 1-2 days | |
| T10855LH4T | Metric | M4 | 0.7 | Taper Lead Tap | Left Hand | £9.66 | 1-2 days | |
| T11005LH4T | Metric | M4.5 | 0.75 | Taper Lead Tap | Left Hand | £19.68 | 1-2 days | |
| T11155LH4T | Metric | M5 | 0.8 | Taper Lead Tap | Left Hand | £9.69 | 1-2 days | |
| T11405LH4T | Metric | M6 | 1 | Taper Lead Tap | Left Hand | £9.69 | 1-2 days | |
| T11605LH4T | Metric | M7 | 1 | Taper Lead Tap | Left Hand | £16.32 | 1-2 days | |
| T11755LH4T | Metric | M8 | 0.5 | Taper Lead Tap | Left Hand | £30.52 | 1-2 days | |
| T11805LH4T | Metric | M8 | 0.75 | Taper Lead Tap | Left Hand | £21.32 | 1-2 days | |
| T11855LH4T | Metric | M8 | 1 | Taper Lead Tap | Left Hand | £21.32 | 1-2 days | |
| T11905LH4T | Metric | M8 | 1.25 | Taper Lead Tap | Left Hand | £11.45 | 1-2 days | |
| T12105LH4T | Metric | M9 | 1 | Taper Lead Tap | Left Hand | £22.47 | 1-2 days | |
| T12155LH4T | Metric | M9 | 1.25 | Taper Lead Tap | Left Hand | £21.38 | 1-2 days | |
| T12305LH4T | Metric | M10 | 0.75 | Taper Lead Tap | Left Hand | £30.87 | 1-2 days | |
| T12405LH4T | Metric | M10 | 1 | Taper Lead Tap | Left Hand | £21.32 | 1-2 days | |
| T12455LH4T | Metric | M10 | 1.25 | Taper Lead Tap | Left Hand | £21.32 | 1-2 days | |
| T12505LH4T | Metric | M10 | 1.5 | Taper Lead Tap | Left Hand | £16.87 | 1-2 days | |
| T12755LH4T | Metric | M11 | 1.5 | Taper Lead Tap | Left Hand | £37.64 | 1-2 days | |
| T12955LH4T | Metric | M12 | 1 | Taper Lead Tap | Left Hand | £31.86 | 1-2 days | |
| T13005LH4T | Metric | M12 | 1.25 | Taper Lead Tap | Left Hand | £31.86 | 1-2 days | |
| T13055LH4T | Metric | M12 | 1.5 | Taper Lead Tap | Left Hand | £29.13 | 1-2 days | |
| T13105LH4T | Metric | M12 | 1.75 | Taper Lead Tap | Left Hand | £23.71 | 1-2 days | |
| T13205LH4T | Metric | M13 | 1 | Taper Lead Tap | Left Hand | £63.84 | 1-2 days | |
| T13505LH4T | Metric | M14 | 1 | Taper Lead Tap | Left Hand | £68.63 | 1-2 days | |
| T13555LH4T | Metric | M14 | 1.25 | Taper Lead Tap | Left Hand | £32.79 | 1-2 days | |
| T13605LH4T | Metric | M14 | 1.5 | Taper Lead Tap | Left Hand | £28.33 | 1-2 days | |
| T13655LH4T | Metric | M14 | 2 | Taper Lead Tap | Left Hand | £28.33 | 1-2 days | |
| T13905LH4T | Metric | M16 | 1 | Taper Lead Tap | Left Hand | £45.83 | 1-2 days | |
| T14005LH4T | Metric | M16 | 1.5 | Taper Lead Tap | Left Hand | £34.76 | 1-2 days | |
| T14105LH4T | Metric | M16 | 2 | Taper Lead Tap | Left Hand | £37.64 | 1-2 days | |
| T14155LH4T | Metric | M17 | 1 | Taper Lead Tap | Left Hand | £56.45 | 1-2 days | |
| T14305LH4T | Metric | M18 | 1 | Taper Lead Tap | Left Hand | £55.07 | 1-2 days | |
| T14405LH4T | Metric | M18 | 1.5 | Taper Lead Tap | Left Hand | £46.60 | 1-2 days | |
| T14455LH4T | Metric | M18 | 2 | Taper Lead Tap | Left Hand | £57.21 | 1-2 days | |
| T14505LH4T | Metric | M18 | 2.5 | Taper Lead Tap | Left Hand | £46.60 | 1-2 days | |
| T14655LH4T | Metric | M20 | 1 | Taper Lead Tap | Left Hand | £63.61 | 1-2 days | |
| T14755LH4T | Metric | M20 | 1.5 | Taper Lead Tap | Left Hand | £53.22 | 1-2 days | |
| T14805LH4T | Metric | M20 | 2 | Taper Lead Tap | Left Hand | £78.48 | 1-2 days | |
| T14855LH4T | Metric | M20 | 2.5 | Taper Lead Tap | Left Hand | £72.52 | 1-2 days | |
| T15055LH4T | Metric | M22 | 1 | Taper Lead Tap | Left Hand | £78.48 | 1-2 days | |
| T15155LH4T | Metric | M22 | 1.5 | Taper Lead Tap | Left Hand | £72.52 | 1-2 days | |
| T15255LH4T | Metric | M22 | 2 | Taper Lead Tap | Left Hand | £78.48 | 1-2 days | |
| T15305LH4T | Metric | M22 | 2.5 | Taper Lead Tap | Left Hand | £61.64 | 1-2 days | |
| T15455LH4T | Metric | M24 | 1 | Taper Lead Tap | Left Hand | £86.27 | 1-2 days | |
| T15555LH4T | Metric | M24 | 1.5 | Taper Lead Tap | Left Hand | £81.88 | 1-2 days | |
| T15605LH4T | Metric | M24 | 2 | Taper Lead Tap | Left Hand | £94.50 | 1-2 days | |
| T15655LH4T | Metric | M24 | 3 | Taper Lead Tap | Left Hand | £80.67 | 1-2 days | |
| T15755LH4T | Metric | M25 | 1.5 | Taper Lead Tap | Left Hand | £67.56 | 1-2 days | |
| T15855LH4T | Metric | M26 | 1 | Taper Lead Tap | Left Hand | £95.68 | 1-2 days | |
| T15905LH4T | Metric | M26 | 1.5 | Taper Lead Tap | Left Hand | £95.68 | 1-2 days | |
| T16055LH4T | Metric | M27 | 1.5 | Taper Lead Tap | Left Hand | £107.21 | 1-2 days | |
| T16155LH4T | Metric | M27 | 3 | Taper Lead Tap | Left Hand | £82.58 | 1-2 days | |
| T16455LH4T Viewing | Metric | M30 | 1 | Taper Lead Tap | Left Hand | £132.96 | 1-2 days | |
| T16505LH4T | Metric | M30 | 1.5 | Taper Lead Tap | Left Hand | £141.73 | 1-2 days | |
| T16555LH4T | Metric | M30 | 2 | Taper Lead Tap | Left Hand | £141.73 | 1-2 days | |
| T16655LH4T | Metric | M30 | 3.5 | Taper Lead Tap | Left Hand | £88.94 | 1-2 days | |
| T16855LH4T | Metric | M32 | 1.5 | Taper Lead Tap | Left Hand | £138.84 | 1-2 days | |
| T17155LH4T | Metric | M33 | 3.5 | Taper Lead Tap | Left Hand | £106.56 | 1-2 days | |
| T17405LH4T | Metric | M35 | 1.5 | Taper Lead Tap | Left Hand | £149.71 | 1-2 days | |
| T17705LH4T | Metric | M36 | 4 | Taper Lead Tap | Left Hand | £105.72 | 1-2 days | |
| T18705LH4T | Metric | M42 | 1.5 | Taper Lead Tap | Left Hand | £206.69 | 1-2 days |
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