Features: BSW - British Standard Whitworth; The angle of thread is 55 degrees as opposed to 60 degrees in Metric and Unified threads. ; This thread form was developed by Sir Joseph Whitworth in 1841. ; The thread form has rounded roots and crests and is specified in BS84:1956. ; TAPER TAPS have a lead of eight threads and are used as a starting tap in difficult or high precision holes. ; Specifications:Diameter1-1/4"Pitch7 tpiLeadTaperOverall Length151 mmTapping Drill28 mm
Features: BSW - British Standard Whitworth; The angle of thread is 55 degrees as opposed to 60 degrees in Metric and Unified threads. ; This thread form was developed by Sir Joseph Whitworth in 1841. ; The thread form has rounded roots and crests and is specified in BS84:1956. ; TAPER TAPS have a lead of eight threads and are used as a starting tap in difficult or high precision holes. ; Specifications:Diameter1-1/4"Pitch7 tpiLeadTaperOverall Length151 mmTapping Drill28 mm
Bordo 1-1/4" x 7 BSW Taper Chrome Tap 4228-1.1/4T
Features: BSW - British Standard Whitworth; The angle of thread is 55 degrees as opposed to 60 degrees in Metric and Unified threads. ; This thread form was developed by Sir Joseph Whitworth in 1841. ; The thread form has rounded roots and crests and is specified in BS84:1956. ; TAPER TAPS have a lead of eight threads and are used as a starting tap in difficult or high precision holes. ; Specifications:Diameter1-1/4"Pitch7 tpiLeadTaperOverall Length151 mmTapping Drill28 mm
Features: BSW - British Standard Whitworth; The angle of thread is 55 degrees as opposed to 60 degrees in Metric and Unified threads. ; This thread form was developed by Sir Joseph Whitworth in 1841. ; The thread form has rounded roots and crests and is specified in BS84:1956. ; TAPER TAPS have a lead of eight threads and are used as a starting tap in difficult or high precision holes. ; Specifications:Diameter1-1/4"Pitch7 tpiLeadTaperOverall Length151 mmTapping Drill28 mm
| Diameter | 1-1/4" |
| Pitch | 7 tpi |
| Lead | Taper |
| Overall Length | 151 mm |
| Tapping Drill | 28 mm |
| Diameter | 1-1/4" |
| Pitch | 7 tpi |
| Lead | Taper |
| Overall Length | 151 mm |
| Tapping Drill | 28 mm |
