# Thread Tap FANAR UNC 5/16-18 DIN 371C R40 (2B) HSSE 800

**URL:** https://aio.lv/en/product--fanar-c2-511101-4128--11983132
**Data updated:** 2026-03-11 16:38 (EET)
**Category:** Tool kits and accessories
**Manufacturer:** FANAR
**Manufacturer code:** C2-511101-4128
**EAN:** 5900920080722
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.49 €
**Prices and availability valid until:** 2026-08-14 23:59
**Price without VAT (21%):** 19.41 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fanar-c2-511101-4128--11983132

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.89 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

Hand or machine thread tap FANAR UNC 5/16-18 produced to DIN 371C form, radius R40, tolerance 2B and made from HSSE 800. Designed for cutting internal Unified National Coarse (UNC) threads in suitable materials. Suitable for through and blind holes depending on application; used in metalworking, maintenance and assembly operations.

## Long description

FANAR thread tap UNC 5/16-18 DIN 371C R40 (2B) HSSE 800 is a hand or machine tap designed for cutting internal Unified National Coarse (UNC) threads. Manufactured to DIN 371C form with a radius R40 and tolerance class 2B, the tap is made from HSSE 800 high-speed steel with cobalt for improved wear resistance. It is suitable for producing accurate internal threads in a range of suitable materials and can be used in both through and blind hole applications depending on the machining setup.
Advantages
The combination of DIN 371C form and radius R40 provides stable thread geometry and reduced stress at the thread root. Tolerance 2B ensures standard internal thread fit for common assembly use. HSSE 800 material offers enhanced hardness and heat resistance compared with conventional high-speed steels, extending tool life in tougher cutting conditions. The tap’s design allows use by hand or in machine spindles, supporting flexible application in workshop and production environments.
Suitable for
Cutting internal UNC 5/16-18 threads in metals and compatible alloys
Maintenance and repair operations requiring standard 2B internal threads
Assembly and fabrication tasks in mechanical and structural components
Through-hole and blind-hole tapping where DIN 371C form and R40 radius are required
Key specifications
Thread standard: Unified National Coarse (UNC) 5/16-18
Form: DIN 371C with radius R40
Tolerance class: 2B (internal)
Material grade: HSSE 800 (high-speed steel with cobalt)
Operation: suitable for hand tapping and machine tapping
How to use
Select the correct drill size for the UNC 5/16-18 tap and secure the workpiece. For hand tapping, use a suitable tap wrench and align the tap perpendicular to the workpiece surface. Apply cutting fluid appropriate to the work material to reduce friction and heat. Start cutting with light pressure until threads are engaged, then proceed steadily, reversing periodically to break chips if necessary. For machine tapping, ensure proper spindle alignment, correct speed and feed settings for the material, and use rigid fixturing to prevent deflection. Clean chips from the flutes frequently and inspect the produced thread for fit and finish.
Usage recommendations
Use appropriate cutting fluid and recommended drill pilot size for UNC 5/16-18 to maximize tool life. Avoid excessive spindle speed and radial loads when machine tapping; ensure correct clamping and alignment. Replace the tap if wear or chipping is detected to maintain thread quality and assembly reliability.

## FAQ

### How much does the FANAR Thread Tap UNC 5/16-18 DIN 371C cost, and is it available for purchase?

The price is 23.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 31.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All FANAR products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized FANAR service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11983132/67438697_large.webp