Sandvik UNC 1/4-20 Spiral Point (Gun Nose) Tap – Premium Through-Hole Tapping (DIN 2184-1)

Built for high-performance threading in steels and other demanding materials, this Sandvik UNC 1/4-20 spiral point (gun nose) tap drives chips forward and out of the hole for clean, precise threads. The PVD FeN-coated HSS-PM substrate and DIN 2184-1 standard shank ensure long tool life, stability, and consistency. Best suited for through-hole applications.

Key Features & Benefits

Durable Cutting Edge – HSS-PM substrate with PVD FeN coating resists wear and heat for extended life.
Efficient Chip Evacuation – Spiral point geometry pushes swarf forward, ideal for through-hole tapping.
Reliable Standard – DIN 2184-1 shank design ensures robust performance in CNC and manual setups.
High Accuracy – Ground to 2B thread tolerance for repeatable, in-spec results.

Technical SpecificationsWhy Choose This Tool?

The Sandvik UNC 1/4-20 spiral point (gun nose) tap combines an HSS-PM substrate, wear-resistant FeN coating, and a DIN 2184-1 shank for exceptional durability and accuracy. Its efficient chip control and precision-ground threads make it an ideal solution for through-hole applications in steels and other challenging materials, whether in CNC machining or conventional setups.

Specification	Metric	Imperial
Thread Size	UNC 1/4-20
Threads per Inch (TPI)		20
Thread Form	UNC 60o	UNC 60o
Thread Diameter	6.35 mm	0.25 in
Tap Chamfer Length	5.44 mm	0.2143 in
Premachined Hole Diameter	5.1 mm	0.2008 in
Premachined Hole Type / Hole Type	Through hole	Through hole
Thread Tolerance Class	2B	2B
Shank Standard	DIN 2184-1	DIN 2184-1
Usable Length (LU)	30 mm	1.1811 in
Functional Length (LF)	80 mm	3.1496 in
Overall Length (OAL)	83 mm	3.2638 in
Neck Diameter	4.55 mm	0.1791 in
Flute Count	3
Flute Helix Angle	0o (spiral point)
Radial Rake Angle	7o
Threading Length	14.1 mm	0.5551 in
Thread Back Taper	Yes	Yes
Threading Chamfer Type	B = 3.5-5xTP (Gunnose)
Chip Breaker	XM
Grade	C145	C145
Substrate	HSS-PM
Coating	PVD FeN (iron-nitride)
Coolant Entry / Exit	Without / None
Connection – Machine Side	Tap shank DIN-metric 7.00 × 5.50
Connection Diameter (Machine Side)	7.0 mm	0.2756 in
Connection Diameter Tolerance	h9
Weight	0.0236 kg	0.052 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 or returns of their product.

All products sold by third-parties are subject to the Customer Charter and comes with guarantees that cannot be excluded under the Australian Consumer Law.

Sandvik UNC 1/4-20 Spiral Point (Gun Nose) Tap – Premium Through-Hole Tapping (DIN 2184-1)

Key Features & Benefits

Durable Cutting Edge – HSS-PM substrate with PVD FeN coating resists wear and heat for extended life.
Efficient Chip Evacuation – Spiral point geometry pushes swarf forward, ideal for through-hole tapping.
Reliable Standard – DIN 2184-1 shank design ensures robust performance in CNC and manual setups.
High Accuracy – Ground to 2B thread tolerance for repeatable, in-spec results.

Technical SpecificationsWhy Choose This Tool?

Specification	Metric	Imperial
Thread Size	UNC 1/4-20
Threads per Inch (TPI)		20
Thread Form	UNC 60o	UNC 60o
Thread Diameter	6.35 mm	0.25 in
Tap Chamfer Length	5.44 mm	0.2143 in
Premachined Hole Diameter	5.1 mm	0.2008 in
Premachined Hole Type / Hole Type	Through hole	Through hole
Thread Tolerance Class	2B	2B
Shank Standard	DIN 2184-1	DIN 2184-1
Usable Length (LU)	30 mm	1.1811 in
Functional Length (LF)	80 mm	3.1496 in
Overall Length (OAL)	83 mm	3.2638 in
Neck Diameter	4.55 mm	0.1791 in
Flute Count	3
Flute Helix Angle	0o (spiral point)
Radial Rake Angle	7o
Threading Length	14.1 mm	0.5551 in
Thread Back Taper	Yes	Yes
Threading Chamfer Type	B = 3.5-5xTP (Gunnose)
Chip Breaker	XM
Grade	C145	C145
Substrate	HSS-PM
Coating	PVD FeN (iron-nitride)
Coolant Entry / Exit	Without / None
Connection – Machine Side	Tap shank DIN-metric 7.00 × 5.50
Connection Diameter (Machine Side)	7.0 mm	0.2756 in
Connection Diameter Tolerance	h9
Weight	0.0236 kg	0.052 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 or returns of their product.

All products sold by third-parties are subject to the Customer Charter and comes with guarantees that cannot be excluded under the Australian Consumer Law.

SANDVIK Sandvik HSS-PM Blue Gun Nose PVD FeN coated Tap 1/4" UNC, DIN 2184-1 Short Body

Finance Available

Product Details

Specifications

Warranty & Returns

You May Also Like

Join millions of Aussies getting what they want for less!

We are here to help!