Somta Series 1NA – 6.35 mm (No. 3) HSS Centre Drill

Somta Series 1NA – 6.35 mm (No. 3) HSS Centre Drill | 1NA0003 The SOMTA 1NA0003 is a High-Speed Steel Centre Drill (No. 3) engineered to American Standard Form A...
$17.00
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$17.00
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Vendor: SOMTA
SKU: 1NA0003
Availability: In Stock
Subtotal: $17.00
Somta Series 1NA – 6.35 mm (No. 3) HSS Centre Drill

Somta Series 1NA – 6.35 mm (No. 3) HSS Centre Drill

$0.00 $17.00

Somta Series 1NA – 6.35 mm (No. 3) HSS Centre Drill

$0.00 $17.00

Somta Series 1NA – 6.35 mm (No. 3) HSS Centre Drill | 1NA0003

The SOMTA 1NA0003 is a High-Speed Steel Centre Drill (No. 3) engineered to American Standard Form A (60°) for precise pilot and countersink hole production prior to turning or grinding. Its rigid HSS body delivers outstanding strength, heat resistance, and wear performance, ensuring accurate, concentric centres and smooth running in all general engineering materials.

Designed for professional machining applications, this tool combines precision-ground geometry with a bright finish for clean chip evacuation and burr-free holes. Ideal for centering operations on steel, cast iron, and non-ferrous metals requiring repeatable accuracy and superior surface finish.

Key Features & Benefits

  • High-Speed Steel (HSS) – Provides exceptional hardness, toughness, and resistance to heat and abrasion.
  • Form A 60° Included Angle – Meets American Standard geometry for accurate pilot and countersink formation.
  • Bright Finish – Reduces friction and minimises burr formation for cleaner hole edges.
  • Precision-Ground Flutes – Promotes smooth chip removal and consistent hole geometry.
  • Short, Rigid Construction – Ensures stability and reduces deflection during high-speed operations.

Technical Specifications

  • Part No: 1NA0003
  • Series: 1NA (Centre Drills – American Standard Form A)
  • Tool Type: HSS Centre Drill No. 3
  • Pilot Diameter (d): 2.78 mm
  • Body Diameter (d₁): 6.35 mm (≈ 1/4″)
  • Web Length (l₂): 2.8 mm
  • Flute Length (l₁): 51 mm
  • Point Angle: 60° Included Angle (Form A)
  • Finish: Bright Finish
  • Material: High-Speed Steel (HSS)
  • Suited Materials: General engineering steels, cast irons, and non-ferrous metals

Why Choose SOMTA Cutting Tools?

  • Precision Manufacturing – Built to ANSI standards for dimensional accuracy and consistency.
  • Reliable Performance – Maintains tight tolerances and true centres in every operation.
  • Industrial Durability – Hardened HSS construction ensures long tool life under continuous use.
  • Trusted Brand Quality – Manufactured by SOMTA Tools, a leader in precision cutting since 1954.

The SOMTA 1NA0003 offers reliable accuracy, exceptional finish quality, and long-term performance for centre-drilling applications. Available through Twin Eagle Imports — your trusted source for premium industrial cutting tools and machining solutions.

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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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