HSS Spiral Fluted Tap

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HSS Spiral Fluted Tap Specification

Operation Type
Tapping

Machine Type
Suitable for drilling and tapping machines

Length
50 mm - 130 mm (size dependent)

Cutter Type
Spiral Flute Tap

Operate Method
Manual or Machine

Features
Efficient chip removal, Suitable for blind holes, High precision

Coating
Uncoated / Bright

Cutting Accuracy
High precision

Shape
Spiral Fluted

Coating Type
Bright / Uncoated

Cutting Force
Low due to efficient chip removal

Hardness
HRC 58-62

Material
High Speed Steel (HSS)

Tool Type
Thread Tap

Cutting Speed
20-35 m/min (varies by material)

Drill Bits Types
Thread Tap (Spiral Fluted)

Cutting Capacity
Up to M20 (varies according to size)

Diameter
M3 to M20 (available sizes)

Maximum Torque
Varies by size, typically up to 40 Nm

Processing Type
Threading (internal threads)

About HSS Spiral Fluted Tap

These taps, as the name implies, are made with spiral flutes instead of straight flutes. This spiral fluting feature aids in drawing chips out of a hole, or serves to bridge a gap inside the hole such as a keyway or cross-hole. Commonly available in slow spiral (25-30 helix angle) or fast spiral (45-60).

Taps are available in a wide range of sizes with us (inch and metric) in both straight and taper pipe threads.

ACME-C	Acme Thread-Centralizing
ACME-G	Acme Thread-General Purpose
AMO	American Standard Microscope Objective Thread
ANPT	Aeronautical National Form Taper Pipe Thread (Ground thread tap marked NPT)
BA	British Association Standard Thread
BSF	British Standard Fine Thread Series
BSPP	British Standard Pipe (Parallel) Thread
BSPT	British Standard Taper Pipe Thread
BSW	British Standard Whitworth Coarse Thread Series
M	Metric ScrewThread Series
N	American National 8, 12 and 16 Thread Series (8N, 12N, 16N)
N BUTT	American Buttress Screw Thread
NC	American National Coarse Thread Series
NEF	American National Extra Fine Thread Series
NF	American National Fine Thread Series
NGO	National Gas Outlet Thread
NGT	National Gas Taper Thread (see "SGT")
NH	American National Hose Coupling and Fire Hose Coupling Threads
NPS	For tap marking only (See NPSC, NPSM)
NPSC	American National Standard Straight Pipe Thread in Pipe Couplings (Tap marked NPS)
NPSF	Dryseal American National Standard Fuel Internal Straight Pipe Thread
NPSH	American National Standard Straight Pipe Thread for Hose Couplings
NPSI	Dryseal American National Standard Intermediate Internal Straight Pipe Thread
NPSL	American National Standard Straight Pipe Thread for Loose Fitting Mechanical Joints with Locknuts
NPSM	American National Standard Straight Pipe Threads for Free-Fitting Mechanical Joints for Fixtures (Tap marked NPS)
NPT	American National Standard Taper Pipe Thread (See ANPT, NPTR)
NPTF	Dryseal American National Standard Taper Pipe Thread
NPTR	American National Standard Taper Pipe Thread for Railing Joints (Tap marked NPT)
NS	American National Thread-Special
PTF	Dryseal SAE Short Taper Pipe Thread
SGT	Special Gas Taper Thread
SPL-PTF	Dryseal Special Taper Pipe Thread
STI	Special Thread for Helical Coil Wire Screw Thread Inserts
Stub Acme	Stub Acme Thread
*UN	Unified Constant Pitch Thread Series
*UNC	Unified Coarse Thread Series
*UNEF	Unified Extra Fine Thread Series
*UNF	Unified Fine Thread Series
UNJ	Unified Thread Series with a 0.15011P to 0.18042P Controlled Root Radius on External Thread only.
UNJC	Unified Coarse Thread Series with a 0.15011P to 0.18042P Controlled Root Radius on External Thread only.
UNJF	Unified Fine Thread Series with a 0.15011P to 0.18042P Controlled Root Radius on External Thread only.
UNM	Unified Miniature Thread Series
UNR	Unified Constant Pitch Thread Series with a 0.108P to 0.144P Controlled Root Radius; Ext. thread only.
UNRC	Unified Coarse Thread Series with a 0.108P to 0.144P Controlled Root Radius; Ext. thread only.
UNRF	Unified Fine Thread Series with a 0.108P to 0.144P Controlled Root Radius; External thread only.
*UNS	Unified Thread-Special
V	A 60¡ "V" thread with Truncated Crest and Root. The theoretical "V" Form is usually flatted to the user's specifications.
WHIT	British Standard Whitworth Special Thread

Reliable Threading for Blind Hole Applications

Designed explicitly for threading blind holes, the HSS Spiral Fluted Tap incorporates a helix angle between 15 and 40, ensuring optimal chip removal. This feature reduces the risk of clogging and breakage during operations, resulting in consistently clean threads in alloyed or non-alloyed materials. Whether used in repair workshops or large-scale manufacturing, its spiral flute geometry guarantees performance and accuracy.

Versatility Meets International Standards

These taps offer flexibility across various threading standards, including DIN 371, DIN 376, ISO, and JIS, accommodating the diverse needs in industrial environments. The selection of 2, 3, or 4 flutes depending on tap size allows users to match the tool to the specific threading task. Suitable for both hand and machine tapping, the taps ensure compatibility with an array of drilling and tapping machines.

Quality and Precision in Every Thread

HSS Spiral Fluted Taps are engineered to deliver a hard, precise cutting edge with a hardness of HRC 58-62. High cutting accuracy and a standard tolerance class of 6H make them the preferred choice for demanding metalworking applications. Their uncoated, bright finish allows for smooth cutting and ease of monitoring tool wear, contributing to long-lasting and reliable threading performance.

FAQs of HSS Spiral Fluted Tap:

Q: How does a spiral fluted tap improve threading in blind holes?

A: A spiral fluted tap is specially engineered with helical grooves that efficiently remove chips from blind holes, preventing clogging and facilitating smooth cutting. This design minimizes tool breakage and ensures precise, clean threads even in deeper holes.

Q: What types of materials can the HSS Spiral Fluted Tap be used on?

A: This tap is ideal for threading both alloyed and non-alloyed materials, making it suitable for a wide range of metals encountered in industrial manufacturing, metalworking, and repair workshops.

Q: When should I choose a 2, 3, or 4 flute spiral tap?

A: The number of flutes corresponds to the size of the tap and the specific application. Smaller taps typically have 2 flutes for better chip evacuation in tight spaces, while larger taps may have 3 or 4 flutes to provide added strength and increased cutting edges.

Q: Where can I use the HSS Spiral Fluted Tap?

A: These taps are suitable for use in industrial manufacturing plants, metalworking facilities, automobile repair workshops, and even in smaller repair shops, providing versatility across various threading operations in India and internationally.

Q: What is the recommended process for using this tap?

A: For optimal performance, the HSS Spiral Fluted Tap can be operated manually or with a compatible tapping machine. Maintain a cutting speed of 20-35 m/min depending on the material, and use appropriate lubrication to further enhance tap life and threading precision.

Q: How does the Bright (uncoated) surface treatment benefit users?

A: A bright, uncoated finish provides a smooth cutting surface that reduces friction and makes it easier to monitor wear on the tap. It is ideal for general-purpose threading in a variety of metal materials.

Q: What are the main benefits of choosing this tap for my operations?

A: The tap offers high precision, efficient chip removal, low cutting force, and compliance with international standards. Its spiral design is particularly advantageous for blind holes, ensuring reliable threading and extended tool longevity.

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