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4-40 HSS Cobalt Single Tap – Precision Metal & Alloy Tap
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4-40 HSS Cobalt Single Tap – Precision Metal & Alloy
Designed for precision thread cutting, this 4-40 HSS Cobalt Single Tap delivers reliable performance across metal and alloy applications. The cobalt-enhanced high-speed steel construction provides improved heat resistance and wear resistance compared to standard HSS taps, making it a dependable choice for creating clean, accurate threads in smaller fastening applications.
Key Features:
- HSS Cobalt Construction – Cobalt-enhanced steel offers improved heat resistance and durability compared to standard HSS taps.
- 4-40 Thread Size – Standard UNC sizing suitable for a range of fine fastening and assembly applications.
- Single Tap Design – Cuts the full thread profile in one pass, simplifying the tapping process.
- Precision Cutting – Precision-ground design supports accurate, consistent thread formation.
- Suitable for Metal & Alloy – Reliable performance across steel, aluminium, and other common alloys.
- Durable Build – Reinforced construction is built to withstand repeated use on metal and alloy materials.
Ideal For:
- Precision metal fabrication and machining tasks
- Small-scale alloy component threading and repair
- Electronics and precision instrument assembly
- Automotive and industrial workshop use
- Replacement or upgrade for standard taps
Specifications:
- Type: HSS Cobalt Single Tap
- Thread Size: 4-40 UNC
- Material: HSS Cobalt
- Application: Precision Metal & Alloy Thread Cutting
A precise HSS Cobalt single tap offering reliable, accurate thread cutting — ideal for fine metal and alloy fastening applications requiring high wear resistance.

We provide reliable shipping across the UK and to selected international destinations, ensuring every order — from small accessories to larger equipment — reaches you safely and on schedule.
UK Delivery Standard orders are delivered within 3–5 business days. Express delivery is available within 1–2 business days. For larger items or machinery, delivery timelines are confirmed at checkout based on size and destination.
International Delivery We ship to selected destinations worldwide. Orders within Europe typically arrive within 5–10 business days; deliveries to the rest of the world take 7–14 business days. Please note that any applicable customs duties or import taxes are the responsibility of the customer.
Order Processing In-stock items are dispatched within 1–2 business days of order confirmation. Once your order has been shipped, you will receive tracking details to monitor your delivery.
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