Somta Series 541 - HSS Straight Flute Short Hand Bottom (Finishing) Tap UNC 1 3/8" x 6 TPI

HSS Bottom Tap UNC 1-3/8″ x 6 – Somta Series 541 The SOMTA 5413493 – 1-3/8″ x 6 UNC HSS Bottom Tap is a heavy-duty threading tool designed for precise...
£247.00
£247.00
(-0%)
Vendor: SOMTA
SKU: 5413493
Availability: In Stock
Subtotal: £247.00
Somta Series 541 - HSS Straight Flute Short Hand Bottom (Finishing) Tap UNC 1 3/8" x 6 TPI

Somta Series 541 - HSS Straight Flute Short Hand Bottom (Finishing) Tap UNC 1 3/8" x 6 TPI

£247.00

Somta Series 541 - HSS Straight Flute Short Hand Bottom (Finishing) Tap UNC 1 3/8" x 6 TPI

£247.00

HSS Bottom Tap UNC 1-3/8″ x 6 – Somta Series 541

The SOMTA 5413493 – 1-3/8″ x 6 UNC HSS Bottom Tap is a heavy-duty threading tool designed for precise thread cutting at full depth in blind holes. Manufactured from high-speed steel (HSS), it features a short chamfer ideal for threading close to the bottom of a drilled hole. Conforming to the Unified National Coarse (UNC) thread profile, this tap delivers accurate and clean threading performance in a wide variety of industrial and fabrication applications.

Key Features & Benefits

  • Bottoming Chamfer (1–2 Threads) – Optimized for threading to full depth in blind hole applications.
  • Unified National Coarse (UNC) – 1-3/8″ diameter with 6 TPI for coarse-thread fastener compatibility.
  • Straight Flute Geometry – Provides controlled chip flow and consistent cutting action.
  • High-Speed Steel (HSS) – Delivers superior durability and cutting efficiency under high-load conditions.
  • Bright Finish – Minimizes friction and promotes smoother threading.
  • Versatile Tapping – Suitable for use with tap wrenches, tapping machines, and other threading tools.

Technical Specifications

  • Part No: 5413493
  • Thread Size: 1-3/8″ x 6 TPI
  • Thread Standard: UNC – Unified National Coarse
  • Tap Type: Bottoming (short chamfer for blind holes)
  • Flute Style: Straight flute
  • Cutting Direction: Right-hand
  • Material Finish: High-Speed Steel (HSS), Bright
  • Standard: ANSI / Unified Inch

Why Choose the SOMTA 5413493 UNC Bottom Tap?

  • Maximum Thread Engagement – Reaches near the bottom of blind holes for strong thread integrity.
  • Coarse Thread Capability – Suited for applications requiring robust, high-load threads.
  • Reliable HSS Tooling – Built to withstand demanding industrial use over time.
  • Trusted by Professionals – Ideal for machining, repair, and heavy fabrication work.

The SOMTA 5413493 bottom tap is the professional's choice for accurate coarse-thread tapping in large-diameter blind holes. Engineered from tough HSS and designed for precision, it delivers consistent performance across steel, aluminum, and other machinable metals.

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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.

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