Sandvik UNF 1/2-20 Spiral Flute Tap – Premium Blind-Hole Tapping (DIN 2184-1)

Designed for precision threading in steels, stainless steels, and cast irons (PMK). The 45o spiral flute design lifts chips out of blind holes to ensure clean threads, longer tool life, and reduced risk of breakage. Suitable for both CNC and conventional machines.

Key Features & Benefits

Extended Tool Life – HSS-PM substrate with PVD FeN coating minimizes wear, galling, and chipping.
Superior Chip Evacuation – 45o spiral flute geometry reliably pulls chips out of blind holes.
Production Ready – DIN 2184-1 standard shank ensures rigidity and compatibility across setups.
High Accuracy – Ground to UNF 2B tolerance for repeatable, in-spec threads.

Technical SpecificationsWhy Choose This Tool?

The Sandvik UNF 1/2-20 spiral flute tap delivers strong performance in blind-hole threading. Its HSS-PM substrate and PVD FeN coating ensure durability, while the 45o spiral flutes provide smooth and reliable chip evacuation. Ideal for high-precision, professional-grade machining applications.

Specification	Metric	Imperial
Workpiece Material(s)	PMK
Thread Size	UNF 1/2-20	1/2-20
Thread Form	UNF 60o	UNF 60o
Thread Pitch	1.27 mm	20 TPI
Thread Diameter	12.7 mm	0.500 in
Tap Chamfer Length	2.72 mm	0.1071 in
Premachined Hole Diameter	11.5 mm	0.4528 in
Premachined Hole Type / Hole Type	Blind hole	Blind hole
Thread Tolerance Class	2B
Shank Standard	DIN 2184-1
Usable Length (LU)	83 mm	3.2677 in
Functional Length (LF)	110 mm	4.3307 in
Overall Length (OAL)	110 mm	4.3307 in
Neck Diameter	8.6 mm	0.3386 in
Flute Count	3
Flute Helix Angle	45o
Radial Rake Angle	13o
Threading Length	18 mm	0.7087 in
Threading Chamfer Type	C = 2-3xTP
Chip Breaker	XM
Grade	C145
Substrate	HSS-PM
Coating	PVD FeN
Coolant Entry / Exit	Without / None
Connection – Machine Side	Tap shank DIN-metric 9.00 × 7.00
Connection Diameter (Machine Side)	9.0 mm	0.3543 in
Connection Diameter Tolerance	h9
Weight	0.0475 kg	0.1047 lb
Maximum Regrinds	0
Release Date	02/25/2014
Release Pack ID	14.1	-

This product is sold by a third-party seller and they are responsible for their product, the content of their listing and any exchanges of return of their product.

All products sold by third-parties are subject to guarantees that cannot be excluded under the Consumer Guarantees Act.

Sandvik UNF 1/2-20 Spiral Flute Tap – Premium Blind-Hole Tapping (DIN 2184-1)

Key Features & Benefits

Extended Tool Life – HSS-PM substrate with PVD FeN coating minimizes wear, galling, and chipping.
Superior Chip Evacuation – 45o spiral flute geometry reliably pulls chips out of blind holes.
Production Ready – DIN 2184-1 standard shank ensures rigidity and compatibility across setups.
High Accuracy – Ground to UNF 2B tolerance for repeatable, in-spec threads.

Technical SpecificationsWhy Choose This Tool?

Specification	Metric	Imperial
Workpiece Material(s)	PMK
Thread Size	UNF 1/2-20	1/2-20
Thread Form	UNF 60o	UNF 60o
Thread Pitch	1.27 mm	20 TPI
Thread Diameter	12.7 mm	0.500 in
Tap Chamfer Length	2.72 mm	0.1071 in
Premachined Hole Diameter	11.5 mm	0.4528 in
Premachined Hole Type / Hole Type	Blind hole	Blind hole
Thread Tolerance Class	2B
Shank Standard	DIN 2184-1
Usable Length (LU)	83 mm	3.2677 in
Functional Length (LF)	110 mm	4.3307 in
Overall Length (OAL)	110 mm	4.3307 in
Neck Diameter	8.6 mm	0.3386 in
Flute Count	3
Flute Helix Angle	45o
Radial Rake Angle	13o
Threading Length	18 mm	0.7087 in
Threading Chamfer Type	C = 2-3xTP
Chip Breaker	XM
Grade	C145
Substrate	HSS-PM
Coating	PVD FeN
Coolant Entry / Exit	Without / None
Connection – Machine Side	Tap shank DIN-metric 9.00 × 7.00
Connection Diameter (Machine Side)	9.0 mm	0.3543 in
Connection Diameter Tolerance	h9
Weight	0.0475 kg	0.1047 lb
Maximum Regrinds	0
Release Date	02/25/2014
Release Pack ID	14.1	-

This product is sold by a third-party seller and they are responsible for their product, the content of their listing and any exchanges of return of their product.

All products sold by third-parties are subject to guarantees that cannot be excluded under the Consumer Guarantees Act.

SANDVIK Sandvik HSS-PM Blue Spiral Flute PVD FeN coated Tap 1/2" UNF, DIN 2184-1 Long Body

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