This 8pc steel spiral screw extractor set is the perfect solution for removing screws and bolts, specially for removing rusted or rounded damaged ones.
Manufactured from chrome vanadium steel, this extractor feature black-oxide threads for long-lasting performance.
Contents: #1 to #8 screw extractors. Following is the Screw Extractor Selection Guide
| To remove these screws and bolts |
Use drill bit size |
Use extractor size |
| 3/32” – 5/32”, 2.5 mm – 4 mm, No. 3 – No. 6 |
5/64” |
#1 spiral |
| 5/32” – 7/32”, 4 mm – 6 mm, No. 6 – No. 12 |
7/64” |
#2 spiral |
| 7/32” – 9/32”, 6 mm – 8 mm, No. 14 |
5/32” |
#3 spiral |
| 9/32” – 3/8”, 8 mm – 10 mm, 1/8” NPT, 1/8” BSP |
1/4” |
#4 spiral |
| 3/8” – 5/8”, 10 mm – 16 mm, 1/4” NPT, 1/4” BSP |
19/64” |
#5 spiral |
| 5/8” – 7/8”, 16 mm – 22 mm, 3/8” NPT, 3/8” BSP |
13/32” |
#6 spiral |
| 7/8” – 1-1/8”, 22 mm – 27 mm, 1/2” NPT, 1/2” BSP |
17/32” |
#7 spiral |
| 1-1/8” – 1-3/8”, 27 mm – 36 mm, 3/4” NPT, 3/4” BSP |
13/16” |
#8 spiral |
