Dormer HSS Duo M4 Bottoming Tap and A002 Split-Point Drill Bit Set for Blind Holes
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Product information
Description
Dormer two-piece HSS set including an M4 bottoming tap and the matching A002 split-point jobber drill, supplied as a tap plus pre-hole drill to save time and reduce errors. The taps comply with ISO guidance and are suitable for threading up to 1.5× the diameter in most materials. This bottoming tap is specified for blind-hole applications and is suitable for both hand and machine use.
Includes both an M4 bottoming tap and the matched A002 pre-hole drill for convenience and accuracy.
Bottoming tap designed specifically for reliable threading in blind-hole applications.
ISO-compatible taps that cut threads up to 1.5× the diameter in most materials.
Matched A002 split-point jobber drill supplied to ensure correct pre-hole size.
Two-piece kit reduces setup time and helps prevent tapping errors.
Suitable for hand and machine tapping for flexible workshop use.
HSS construction provides durable general-purpose threading performance.
Features
- BrandDORMER
- Pcs per pack1
- NF certificationNF002
- Metric thread not standard threadM4
- Length10 mm



















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