Somta Series 531 - HSS Straight Flute Short Hand Bottom (Finishing) Tap BSF 1/2" x 16 TPI

HSS Bottom Tap BSF ½″ x 16 – Somta Series 531 The SOMTA 5311273 – ½″ x 16 BSF HSS Bottom Tap is a precision threading tool designed for cutting...
£15.00
£15.00
(-0%)
Vendor: SOMTA
SKU: 5311273
Availability: In Stock
Subtotal: £15.00
Somta Series 531 - HSS Straight Flute Short Hand Bottom (Finishing) Tap BSF 1/2" x 16 TPI

Somta Series 531 - HSS Straight Flute Short Hand Bottom (Finishing) Tap BSF 1/2" x 16 TPI

£15.00

Somta Series 531 - HSS Straight Flute Short Hand Bottom (Finishing) Tap BSF 1/2" x 16 TPI

£15.00

HSS Bottom Tap BSF ½″ x 16 – Somta Series 531

The SOMTA 5311273 – ½″ x 16 BSF HSS Bottom Tap is a precision threading tool designed for cutting full-depth internal threads in blind holes. Engineered from high-speed steel (HSS), this bottoming tap features a short chamfer for clean starts and maximum thread depth close to the hole bottom. It conforms to BSF (British Standard Fine) thread standards, making it ideal for general engineering, classic vehicle restoration, and fine-thread repair tasks.

Key Features Benefits

  • Bottoming Chamfer (1–2 Lead Threads) – Enables threading to the full depth of blind holes.
  • BSF Fine Thread Form – ½″ diameter with 16 threads per inch for legacy British fasteners.
  • Straight Flute Geometry – Promotes smooth chip evacuation and easy alignment.
  • High-Speed Steel (HSS) – Delivers excellent wear resistance and long tool life.
  • Bright Finish – Clean surface finish supports smooth cutting and easy inspection.
  • Manual or Machine Use – Compatible with tap wrenches and machine tapping units.

Technical Specifications

  • Part No: 5311273
  • Thread Size: ½″ x 16 TPI
  • Thread Standard: BSF – British Standard Fine
  • Tap Type: Bottoming (short lead for blind holes)
  • Flute Style: Straight flute
  • Cutting Direction: Right-hand
  • Material Finish: High-Speed Steel (HSS), Bright
  • Standard: BS 84 / ISO Equivalent

Why Choose the SOMTA 5311273 BSF Bottom Tap?

  • Accurate Thread Cutting – Delivers reliable BSF thread profiles for legacy assemblies.
  • Short Chamfer for Blind Holes – Maximizes thread engagement near hole bottom.
  • Durable HSS Construction – Maintains sharpness and withstands tough material loads.
  • Ideal for Engineering & Restoration – Perfect for fine-thread repairs in automotive and industrial settings.

The SOMTA 5311273 is trusted for critical threading work in precision applications. Whether in a workshop or maintenance environment, its HSS durability and bottoming design make it an essential tool for tapping blind BSF holes to full depth.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Shipping

Shipping within Australia is free. Please note delivery times to remote and very remote (Zone 3 and 4 postcodes) destinations around Australia will have longer delivery times due to postal processing and the distance to destination. Our handling time will remain as next day dispatch on all orders placed before 8am, ensuring you receive your item as quickly as possible.

AU Post is used for all shipping unless very large items require a courier. Tracking will be provided on all purchases.

Returns

Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.

Additional non-returnable items

Gift cards
Downloadable software products
Some health and personal care items

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer. Any item not in its original condition, is damaged or missing parts for reasons not due to our error
Any item that is returned more than 30 days after delivery

Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or missing refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at mailto:accounts@twineagleimports.com.au.

Sale items (if applicable)

Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

Exchanges (if applicable)

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at mailto:accounts@twineagleimports.com.au and send your item to: Twin Eagle Imports PTY LTD, 198 spinebill dr, greenbank QLD 4124, Australia.

Gifts

If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Related Products