Welcome to our store

Free Shipping for orders over $300

Christmas Orders

Please note: Our suppliers are closed over the holidays. All orders placed after the 16th December will be shipped on the 17th January 2025.

Bordo  |  SKU: 4234-1B

1" x 12 UNF Bottoming Chrome Tap

$73.38
Tax included Shipping calculated at checkout.


Care information

Always use caution and common sense when working with tools.

Delivery and Shipping

Orders placed with Sharp Edge Australia will be delivered within 1 to 7 business days to 98% of Australia using Australia Post

UNF | UNIFIED NATIONAL FINE BOTTOMING

About this item:
  • 1" x 12  UNF Bottoming Chrome Tap
  • Used as thread chasers to clean an existing thread.
  • They can also be used to create a new female thread in non-ferrous metals and plastics.
  • Chrome alloy taps are not suitable for creating precision, safety or critical threads.
  • Unified National Fine thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK.
  • The thread profile of UNF is the same as for metric threads and is described in the JIS B0206 standard.
  • The thread is described by its major diameter and the number of threads per inch of length (TPI).
  • When used on external threads this series has greater tensile stress area than coarse threads of the same size.
  • Fine series threads will resist stripping out better than coarse threads in areas where the external and mating internal threads are subjected to loads equal to or greater than the capacity of the screw or bolt.
  • Fine threads are also used where the length of engagement is limited 1-1/4 or where wall thickness demands a fine pitch.
  • Bottoming Taps have a lead of two threads and are used to ensure minimum thread run-out when tapping to the bottom of a blind hole.
  • Bottoming Taps are typically preceded by the use of a Taper or Intermediate Tap.
Part Number: 4234-1B
Brand: Bordo
Group Code: CTAP
Barcode: 9326518044468
Pack Qty: 1
Diameter (inch): 1
Drill Diameter (mm): 23.5
Lead: Bottoming
Overall Length (mm): 120
Pitch (tpi): 12
Thread Form: UNF

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Bordo

1" x 12 UNF Bottoming Chrome Tap

$73.38

UNF | UNIFIED NATIONAL FINE BOTTOMING

About this item:
  • 1" x 12  UNF Bottoming Chrome Tap
  • Used as thread chasers to clean an existing thread.
  • They can also be used to create a new female thread in non-ferrous metals and plastics.
  • Chrome alloy taps are not suitable for creating precision, safety or critical threads.
  • Unified National Fine thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK.
  • The thread profile of UNF is the same as for metric threads and is described in the JIS B0206 standard.
  • The thread is described by its major diameter and the number of threads per inch of length (TPI).
  • When used on external threads this series has greater tensile stress area than coarse threads of the same size.
  • Fine series threads will resist stripping out better than coarse threads in areas where the external and mating internal threads are subjected to loads equal to or greater than the capacity of the screw or bolt.
  • Fine threads are also used where the length of engagement is limited 1-1/4 or where wall thickness demands a fine pitch.
  • Bottoming Taps have a lead of two threads and are used to ensure minimum thread run-out when tapping to the bottom of a blind hole.
  • Bottoming Taps are typically preceded by the use of a Taper or Intermediate Tap.
Part Number: 4234-1B
Brand: Bordo
Group Code: CTAP
Barcode: 9326518044468
Pack Qty: 1
Diameter (inch): 1
Drill Diameter (mm): 23.5
Lead: Bottoming
Overall Length (mm): 120
Pitch (tpi): 12
Thread Form: UNF
View product