By the end of this chapter, you will be able to:
Mastering these skills will help you create precise threaded parts that fit perfectly, making your work reliable and professional in any workshop setting.
Type: Individual
| Tools & Equipment | Materials |
|---|---|
| Set of taps (M6 to M16) | 12mm diameter mild steel bolt (uncut) |
| Set of dies (M6 to M16) | 12mm diameter nut blank (uncut) |
| Vernier caliper | |
| Micrometer screw gauge | |
| Thread gauge |
| S/N | Item | Quantity |
|---|---|---|
| 1 | Set of taps (M6 to M16) | 1 set per 2 Candidates |
| 2 | Set of dies (M6 to M16) | 1 set per 2 Candidates |
| 3 | Vernier caliper | 1 pc per Candidate |
| 4 | Micrometer screw gauge | 1 pc per Candidate |
| 5 | Thread gauge | 1 pc per Candidate |
| 6 | Safety gloves | 1 pair per Candidate |
| 7 | Safety boots | 1 pair per Candidate |
| 8 | Overall/Overcoat | 1 per Candidate |
| 9 | 12mm diameter mild steel bolt (uncut) | 2 pcs per Candidate |
| 10 | 12mm diameter nut blank (uncut) | 2 pcs per Candidate |
| Items to be Evaluated | Marks Available | Marks Obtained | Comments |
|---|---|---|---|
| TASK 1: Personal Protective Equipment and Tool Preparation | |||
| Wore safety gloves (Award 1 mark or zero) | 1 | ||
| Wore safety boots (Award 1 mark or zero) | 1 | ||
| Wore overall/overcoat (Award 1 mark or zero) | 1 | ||
| Assembled all required measuring and threading tools at workspace (Award 1 mark or zero) | 1 | ||
| Sub-Total | 4 | ||
| TASK 2: Measurement and Identification | |||
| Measured bolt diameter accurately using vernier caliper (Award 2 marks or zero) | 2 | ||
| Measured nut blank internal diameter using micrometer screw gauge (Award 2 marks or zero) | 2 | ||
| Used thread gauge to identify correct pitch for 12mm bolt/nut (Award 2 marks or zero) | 2 | ||
| Selected appropriate tap size matching the bolt diameter and pitch (Award 2 marks or zero) | 2 | ||
| Selected appropriate die size matching the nut diameter and pitch (Award 2 marks or zero) | 2 | ||
| Sub-Total | 10 | ||
| TASK 3: Verification and Documentation | |||
| Verified tap and die sizes against ISO metric threading standards chart (Award 2 marks or zero) | 2 | ||
| Recorded selected tap and die sizes with pitch in workshop logbook (Award 2 marks or zero) | 2 | ||
| Cleaned and stored taps and dies properly after selection (Award 1 mark or zero) | 1 | ||
| Sub-Total | 5 | ||
| PRODUCT CHECKLIST | |||
| Correct selection of M12 x 1.75mm pitch tap for bolt threading (Award 3 marks or zero) | 3 | ||
| Correct selection of M12 x 1.75mm pitch die for nut threading (Award 3 marks or zero) | 3 | ||
| Documentation of selected tap and die sizes with pitch is clear and accurate (Award 2 marks or zero) | 2 | ||
| Sub-Total | 8 | ||
| GRAND TOTAL | 27 | ||
Type: Individual
| Tools & Equipment | Materials |
|---|---|
| Caliper (Vernier or Digital) | Mild steel rod 20mm diameter, 150mm length |
| Center punch | Mild steel plate with 12mm diameter hole |
| Hammer | Cutting oil |
| File (mill file 200mm) | |
| Tap wrench | |
| Die stock handle | |
| Taps and dies set for M16 threading |
| S/N | Item | Quantity |
|---|---|---|
| 1 | Mild steel rod 20mm diameter, 150mm length | 1 Pc per Candidate |
| 2 | Mild steel plate with 12mm diameter hole | 1 Pc per Candidate |
| 3 | Taps and dies set for M16 threading | 1 Set per Candidate |
| 4 | Caliper (Vernier or Digital) | 1 Pc per Candidate |
| 5 | Center punch | 1 Pc per Candidate |
| 6 | Hammer | 1 Pc per Candidate |
| 7 | File (mill file, 200mm) | 1 Pc per Candidate |
| 8 | Tap wrench | 1 Pc per Candidate |
| 9 | Die stock handle | 1 Pc per Candidate |
| 10 | Cutting oil | 100 ml per Candidate |
| 11 | Safety goggles | 1 Pair per Candidate |
| 12 | Overall (work coat) | 1 per Candidate |
| 13 | Safety boots | 1 Pair per Candidate |
| Items to be Evaluated | Marks Available | Marks Obtained | Comments |
|---|---|---|---|
| TASK 1: PPE and Work Preparation | |||
| Wore safety goggles (Award 1 mark or zero) | 1 | ||
| Wore overall (work coat) (Award 1 mark or zero) | 1 | ||
| Wore safety boots (Award 1 mark or zero) | 1 | ||
| Assembled required tools and materials at workstation (Award 1 mark or zero) | 1 | ||
| Sub-Total | 4 | ||
| TASK 2: Measuring and Marking | |||
| Measured the diameter of the mild steel rod accurately using caliper (Award 2 marks or zero) | 2 | ||
| Marked the correct length of 150mm on the rod clearly (Award 2 marks or zero) | 2 | ||
| Measured and confirmed the hole diameter on the mild steel plate as 12mm (Award 2 marks or zero) | 2 | ||
| Used center punch to mark start point for threading on rod and hole (Award 1 mark or zero) | 1 | ||
| Sub-Total | 7 | ||
| TASK 3: Preparing Rod and Hole for Threading | |||
| Chamfered the rod end correctly using file to aid die threading (Award 3 marks or zero) | 3 | ||
| Chamfered the hole edge correctly using file to aid tap threading (Award 3 marks or zero) | 3 | ||
| Applied cutting oil appropriately before threading (Award 1 mark or zero) | 1 | ||
| Sub-Total | 7 | ||
| PRODUCT CHECKLIST | |||
| Rod length marked at 150mm with clear markings (Award 2 marks or zero) | 2 | ||
| Rod diameter confirmed at 20mm ±0.1mm (Award 2 marks or zero) | 2 | ||
| Hole diameter confirmed at 12mm ±0.1mm (Award 2 marks or zero) | 2 | ||
| Rod and hole edges correctly chamfered and free from burrs (Award 3 marks or zero) | 3 | ||
| Cutting oil applied sufficiently to rod and hole ends (Award 1 mark or zero) | 1 | ||
| Sub-Total | 10 | ||
| GRAND TOTAL | 28 | ||
At the start of this chapter we promised you would be able to:
Tick each one you can genuinely do.
So, are you there yet?
You're competent when you can confidently do 50% or more of what this chapter promised.
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