UNF (Unified National Fine)This 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 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.
UNF (Unified National Fine)This 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 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.
in 2 offers
The lowest price for Bordo 10g x 32 UNF Bottoming Chrome Tap 4234-10GB right now is $11.30 at toolkitdepot.com.au, compared across 2 retailers.
The all-time low was $8.01 on 30 Nov 2025 — today's price is 41% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 7 May 2026.
Bordo 10g x 32 UNF Bottoming Chrome Tap 4234-10GB
UNF (Unified National Fine)This 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 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.
UNF (Unified National Fine)This 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 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.
Last updated at 07/05/2026 19:35:43
Bordo Hand Tap Chrome UNF Bottoming Range - 4234B - Tool Kit Depot
Delivery between 15–20 May $10
Bordo - 10g X 32 UNF Bottoming Chrome Tap | 4234-10GB
Delivery between 8–16 May $7.95
| Diameter | 10G |
| Pitch | 4.1 tpi |
| Lead | Bottoming |
| Overall Length | 58 mm |
| Tapping Drill | 4.1 mm |
Bordo Hand Tap Chrome UNF Bottoming Range - 4234B - Tool Kit Depot
Delivery between 15–20 May $10
Bordo - 10g X 32 UNF Bottoming Chrome Tap | 4234-10GB
Delivery between 8–16 May $7.95
| Diameter | 10G |
| Pitch | 4.1 tpi |
| Lead | Bottoming |
| Overall Length | 58 mm |
| Tapping Drill | 4.1 mm |
