This part of JB/T 8825 specifies the type and dimension, designation example, thread tolerance and technical specification of whitworth thread taps (hereinafter referred to as taps).
This part is applicable to manufacturing taps with thread code of 1/8~4 whitworth threads.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of JB/T 8825. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document applies.
JB/T 8825.2 Tool for whitworth threads - Part 2: Manufacturing tolerances on the threaded portion of taps
JB/T 8825.3 Tool for whitworth threads - Part 3: Technical specification for taps
3 Type and dimension
3.1 The type of taps with coarse shank and neck is as shown in Figure 1 and their dimensions are given in Tables 1 and 2.
3.2 The type of taps with fine shank is as shown in Figure 2 and their dimensions are given in Tables 3 and 4.
Foreword i 1 Scope 2 Normative references 3 Type and dimension 4 Thread tolerance 5 Technical specification Table 1 Whitworth coarse thread tap with coarse shank and neck Table 2 Whitworth fine thread tap with coarse shank and neck Table 3 Whitworth coarse thread tap with fine shank Table 4 Whitworth fine thread tap with fine shank Table 5 Recommendation on the application range and taper parameters of single tap and group taps
Tool for whitworth threads - Part 1: Taps
1 Scope
This part of JB/T 8825 specifies the type and dimension, designation example, thread tolerance and technical specification of whitworth thread taps (hereinafter referred to as taps).
This part is applicable to manufacturing taps with thread code of 1/8~4 whitworth threads.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of JB/T 8825. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document applies.
JB/T 8825.2 Tool for whitworth threads - Part 2: Manufacturing tolerances on the threaded portion of taps
JB/T 8825.3 Tool for whitworth threads - Part 3: Technical specification for taps
3 Type and dimension
3.1 The type of taps with coarse shank and neck is as shown in Figure 1 and their dimensions are given in Tables 1 and 2.
3.2 The type of taps with fine shank is as shown in Figure 2 and their dimensions are given in Tables 3 and 4.
Contents of JB/T 8825.1-2011
Foreword i
1 Scope
2 Normative references
3 Type and dimension
4 Thread tolerance
5 Technical specification
Table 1 Whitworth coarse thread tap with coarse shank and neck
Table 2 Whitworth fine thread tap with coarse shank and neck
Table 3 Whitworth coarse thread tap with fine shank
Table 4 Whitworth fine thread tap with fine shank
Table 5 Recommendation on the application range and taper parameters of single tap and group taps
