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Die Holder DH
External Threading Die Holder DH
Die-Holder Model: DH
📌 Purpose:
Die Holder Model DH –
Versatile Threading Solution: The Die Holder Model DH transforms a standard
tapping attachment into a high-efficiency threading tool with a simple
die-holder insertion. This smart integration enables dual-purpose functionality
tapping and threading without changing machines. It’s a cost-saving,
space-efficient choice for any machine shop aiming to boost productivity with
minimal setup.
🏗️ Machine Compatibility:
Model DH Die Holder can be
seamlessly mounted on:
v Drilling
machines and Milling machines
v Radial
drilling machines [ In manual Mode ]
v CNC,
VMC and HMC machines
v Electric tapping machine
🛠️ DH Die Holder Technical Data
|
Model |
OD Size (ØD) |
Threading Capacity (mm) |
Threading Capacity (inch) |
Thread Length |
Shank Dia (ØD1) (MM) X Square (E) (MM) |
Suitable For |
DH - Approx Weight (Kg.) |
|
DH-1 |
13/16" |
3 – 7 mm |
1/8” – 1/4” |
35 mm |
10 X 8 mm |
TCN1, TCNR1, TCNF1
[QA1-M-10 (3/8")], TK1/HR2 [S-222], HRF2 [QA1- M-10 (3/8")] |
0.150 Kg. |
|
DH-1 |
1" |
3 – 7 mm |
1/8” – 1/4” |
35 mm |
10 X 8 mm |
TCN1, TCNR1, TCNF1 [QA1- M-10
(3/8")], TK1/HR2 [S-222], HRF2 [QA1- M-10 (3/8")] |
0.160 Kg. |
|
DH-2 |
1" |
6 – 10 mm |
1/4” – 3/8” |
38 mm |
12.50 X 10 mm |
TCN2, TCNR2, TCNF2
[QA40-M-16 (5/8")], TK2/HR3 [S-453], HRF3 [QA40- M-16 (5/8")] |
0.200 Kg. |
|
DH-3 |
1-5/16" |
6 – 14 mm |
1/4” – 9/16” |
40 mm |
14 X 11.20 mm |
TCN3, TCNR3, TCNF3 [QA40-M-18/M-20
(3/4")], TK2/HR3 [S-453], HRF3 [QA40- M-18/M-20 (3/4")] |
0.330 Kg. |
|
DH-4 |
1-1/2" |
10 – 18 mm |
3/8” – 3/4” |
40 mm |
14 X 11.20 mm |
TCN4-5, TCNR4-5,
TCNF4-5 [QA3- M-18/M-20 (3/4")], TK3/HR4 [S-613], HRF4 [QA3- M-18/M-20
(3/4")] |
0.350 Kg. |
📝 Important Ordering Note: DH
Supplied without Die.
Engineered
for reliability, speed, and precision in high-performance threading operations.
🤖 Smart Function:
|
🧭
Function |
📖
Description |
🎯
Benefit |
|
🧰
Universal Machine Fit |
Compatible with
drilling, milling, radial drilling, CNC, VMC, HMC, and electric tapping
machines |
Maximizes adaptability
across conventional and advanced machining systems |
|
🔁
Bidirectional Threading |
Supports both right-hand and
left-hand threads with dedicated dies |
Expands threading capability for
diverse applications |
|
🔧
Die Compatibility |
Accepts all standard
HSS dies; only correct die size required |
Simplifies tooling and
reduces inventory costs |
|
🧪
Material Suitability |
Optimized for MS, CI casting,
low carbon steel, aluminum, copper, and steel |
Ensures reliable threading
across common industrial metals |
|
💲
Cost-Efficient Threading |
Enables precise,
high-speed threading across multiple sizes using one holder |
Minimizes tooling
costs and boosts productivity |
|
⚡
Quick & Easy Installation |
Shank diameter and square size
match standard tap dimensions; QA system for rapid tap replacement |
Reduces setup time and enhances
efficiency |
|
🔄
Reversible Operation |
Works with TCN, TCNF,
HR, HRF models for right- or left-hand threads |
Provides flexibility
without modification |
|
🛡️
Die Safety Clutch |
Advanced ball-clutch or overload
clutch protects taps from breakage |
Extends tool life and prevents
costly downtime |
|
🎯
Consistent Thread Accuracy |
Delivers uniform,
high-quality threads across large production volumes |
Ensures superior fit
and minimal deviation |
|
🛡️
Precision-Ground Components |
Close-tolerance parts ensure
smooth performance and reliable interchangeability |
Reduces vibration and enhances
surface finish |
|
⚙️
Speed-Optimized Operation |
Efficient within
100–300 RPM, suitable for materials up to 20 HRC |
Provides accurate
threading at controlled speeds |
|
🔂
Single-Cut Functionality |
Roughing and finishing achieved
without tool change |
Simplifies operation and saves
time |
|
🧲
Stable Cutting Performance |
Rigid construction
with optimized cutting dynamics |
Improves surface
finish and extends tool life |
|
🧪
Thread Standards Compatibility |
Supports NPT, BSP, BSW, UNF,
UNC, and Metric threads |
Covers global threading
requirements |
🔑 Key Advantages:
v Universal
Machine Fit: Universal Machine Compatibility Designed for maximum
adaptability; , DH die-holders offer broad compatibility across a range
of machinery. They seamlessly integrate with horizontal lathes [TCNR, TK],
vertical drilling, milling machines and radial drilling machines
equipped with rotating and reversing spindles [TCN, TCNF, HR, HRF, TCNR],
as well as CNC, VMC and HMC systems [TCNR, TK]. Additionally,
they are well-suited for electric tapping machines [QA]. This
wide-ranging adaptability makes them a reliable solution for both conventional
and advanced machining applications.
v Threading
Flexibility: Supports both right-hand and left-hand threads with
dedicated die for each.
v Die
Compatibility: Accepts all standard HSS die, only the proper die size
is required.
v Material
Suitability: Optimized for ductile metals like MS, CI Casting, Low
Carbon Steel, Aluminium and Copper, and also suitable for Steel.
v Cost-Efficient
Threading: Achieve precise, high-speed threading across multiple sizes
using a single die-holder - minimizing tooling costs and
maximizing productivity. Ideal for high-volume production environments
where accuracy and efficiency are critical.
v User
Requirement: For best performance, operation by a skilled machinist is
recommended.
v Affordable
Solution: More economical than conventional SD models, particularly in
larger sizes.
v High-Speed
Output: Enables threading faster than Hand Threading Die Holder Model
and suited for rapid multi-size threading at low cost.
⚡️Quick & Easy Installation – Model DH With [ TCN, HR,
TCNR, TK ] :
v The
DH die-holder features a shank diameter and square size precisely
matching standard tap dimensions (in millimeters), ensuring effortless
and accurate installation directly in line with the tap specifications.
This compatibility simplifies setup and enhances overall machining efficiency.
v Insert
the tap into the attachment's chuck and align it properly.
v Lightly
tighten the square nuts to hold the tap squarely in place.
v Secure
the tap by tightening the chuck nut this grips the tap firmly via the
collet.
⚡️Quick & Easy Installation – Model DH With [ HRF / TCNF /
Electric Tapping Machine / QA ] :
v The
DH die-holder features a shank diameter and square size precisely
matching standard tap dimensions (in millimeters), ensuring effortless
and accurate installation directly in line with the tap specifications.
This compatibility simplifies setup and enhances overall machining efficiency.
v The HRF
/ TCNF / Electric tapping machine model features a smartly engineered Quick
Change Tap Adaptor (QA) system that allows rapid and effortless tap
replacement.
🎯 High-Precision Features:
v Reversible
Operation with model TCN, TCNF, HR, HRF : Taps right- or left-hand threads
without any modification.
v Die
Safety with Model HR, HRF : Advanced
ball-clutch protects taps from breakage with ultra-sensitive overload
response.
v Die
Safety Model TCN, TCNF: Advanced clutch protects taps from breakage
with ultra-sensitive overload response.
v Consistent
Thread Accuracy: Delivers uniform, high-quality threading across
large production volumes, ensuring minimal deviation and superior fit.
v Precision-Ground
Components: All critical parts are manufactured to close tolerances,
enabling seamless assembly, smooth performance, and reliable
interchangeability.
v Stable
Cutting Performance: Rigid construction and optimized cutting dynamics
reduce vibration, enhance surface finish, and extend tool life.
v Speed-Optimized
Operation: Performs efficiently within a wide RPM range (100–300),
with excellent results even on materials with hardness up to 20 HRC.
v Single-Cut
Functionality: Roughing and finishing thread cuts achieved without
tool change - just a simple handle adjustment.
v Precision
Engineering: Designed for high-speed, accurate thread cutting,
suitable for low-volume production and heavy-duty jobs alike.
📐 Technical Operating Range:
v Threading
Speed: Recommended threading speed: 100–300 RPM, depending on
material hardness, thread size/pitch, and chaser condition. (Always use
coolant for finish-grade threads and longer tap life.)
v Material
Hardness: 0–20 HRC
🛠️ Maintenance Note:
To extend the life of this
tapping attachment or any die head, die holder, or tap chuck avoid constant
use at upper or lower limit capacities. Consider rotating between two or
three units for heavy-duty applications.
🔩 Chaser Thread Standards
|
Thread |
Full Form |
Description |
|
NPT |
National Pipe Taper |
Tapered thread used in
U.S. pipe fittings. Creates a seal via thread interference. |
|
BSP |
British Standard Pipe |
Common in Europe and Asia.
Includes BSPT (tapered) and BSPP (parallel) threads. |
|
BSW |
British Standard
Whitworth |
Coarse thread with
rounded crests and roots. Used in older British machinery. |
|
UNF |
Unified National Fine |
Fine-pitch thread used in
precision applications. Part of the Unified Thread Standard. |
|
UNC |
Unified National
Coarse |
Coarse-pitch thread
for general fastening. Also part of the Unified Thread Standard. |
|
Metric |
ISO Metric Thread |
International standard. Uses
millimeter-based pitch and diameter. |
🧰 Where They're Commonly Used
v NPT:
Plumbing, gas lines, hydraulic systems (mostly in North America)
v BSP:
Water and fluid systems (Europe, Asia, Australia)
v BSW:
Restoration, vintage British equipment
v UNF/UNC:
Automotive, aerospace, general engineering (U.S. and Canada)
v Metric: Global standard for bolts, screws, and fasteners
🏭 Chaser Material - Performance Comparison
|
Feature |
M2 |
M2 + Coating |
M35 |
M35 + Coating |
|
Base
Material |
HSS
(no cobalt) |
Same
+ surface coating |
HSS
+ 5% cobalt |
Same
+ surface coating |
|
Heat
Resistance |
Moderate |
Improved |
High |
Excellent |
|
Wear
Resistance |
Good |
Better |
Very
Good |
Superior |
|
Tool
Life |
Standard |
Longer |
Long |
Longest |
|
Thread
Finish |
Acceptable |
Smoother |
Clean |
Best-in-class |
|
Cost |
Low |
Slightly higher |
Higher |
Highest |
|
Ideal
Use |
Mild
steel, alloys |
Medium-duty
runs |
Stainless,
tool steel |
High-speed,
tough jobs |
⚙️ Estimated Production Ratios
(Relative Tool Life)
|
Chaser
Type |
Relative
Tool Life |
Typical
Usage Ratio* |
|
M2 |
1×
(baseline) |
40–50% |
|
M2
+ Coating |
~1.5× |
20–25% |
|
M35 |
~2× |
15–20% |
|
M35
+ Coating |
~2.5–3× |
10–15% |
*These ratios reflect how often
each type might be used in a mixed production setup, assuming cost and
performance are balanced.
🔍 Production Insights
v M2
is suitable for short-run jobs or general-purpose threading where
cost is a priority.
v M2
with coating offers better performance in medium-duty production,
especially with coolant-assisted threading.
v M35
is built for demanding materials like stainless steel and excels in automated
setups.
v M35
with coating is the top-tier choice for continuous, high-speed
production with minimal downtime.
💡 Decision Tip
If your production involves frequent threading of hard materials or long cycle times, investing in M35 with coating can reduce tool changes and improve consistency. But for cost-sensitive, low-to-medium complexity jobs, M2 or M2 with coating may be more economical.
🎯
"Intelligent
Quick-Analysis Tool Designed For Discerning Business Customers."
🎯
🛠️ DH
Model Die-Holder –
Dimensional Range Smart Overview
|
Model |
OD Size |
Threading Capacity (mm) |
Threading Capacity (inch) |
Thread Length |
Shank Dia (MM) X Square (MM) |
Suitable For |
DH - Approx Weight (Kg.) |
|
DH-1 |
13/16" |
3 – 7 mm |
1/8” – 1/4” |
35 mm |
10 X 8 mm |
TCN1, TCNR1, TCNF1
[QA1-M-10 (3/8")], TK1/HR2 [S-222], HRF2 [QA1- M-10 (3/8")] |
0.150 Kg. |
|
DH-1 |
1" |
3 – 7 mm |
1/8” – 1/4” |
35 mm |
10 X 8 mm |
TCN1, TCNR1, TCNF1 [QA1- M-10
(3/8")], TK1/HR2 [S-222], HRF2 [QA1- M-10 (3/8")] |
0.160 Kg. |
|
DH-2 |
1" |
6 – 10 mm |
1/4” – 3/8” |
38 mm |
12.50 X 10 mm |
TCN2, TCNR2, TCNF2
[QA40-M-16 (5/8")], TK2/HR3 [S-453], HRF3 [QA40- M-16 (5/8")] |
0.200 Kg. |
|
DH-3 |
1-5/16" |
6 – 14 mm |
1/4” – 9/16” |
40 mm |
14 X 11.20 mm |
TCN3, TCNR3, TCNF3 [QA40-M-18/M-20
(3/4")], TK2/HR3 [S-453], HRF3 [QA40- M-18/M-20 (3/4")] |
0.330 Kg. |
|
DH-4 |
1-1/2" |
10 – 18 mm |
3/8” – 3/4” |
40 mm |
14 X 11.20 mm |
TCN4-5, TCNR4-5,
TCNF4-5 [QA3- M-18/M-20 (3/4")], TK3/HR4 [S-613], HRF4 [QA3- M-18/M-20
(3/4")] |
0.350 Kg. |
🔩 DH
Series Die Holder – Quick Smart Summary
The DH Die Holder is a
versatile external threading solution that transforms standard tapping
attachments into high-efficiency threading tools. Designed for both manual and
automated setups, it offers universal machine compatibility, bidirectional
threading, and precision-ground components—making it ideal for cost-efficient,
high-volume production environments.
🔑 Key Features
v 🧰
Universal Machine Fit: Compatible with drilling, milling, radial
drilling, CNC, VMC, HMC, and electric tapping machines.
v 🔁
Thread Direction Flexibility: Supports both right-hand and left-hand
threads with dedicated dies.
v 🔧
Die Compatibility: Accepts all standard HSS dies; only correct die size
required.
v 🧪
Material Versatility: Optimized for MS, CI casting, low carbon steel,
aluminum, copper, and steel.
v 💲
Cost-Efficient Threading: Enables precise, high-speed threading across
multiple sizes using one holder—reducing tooling costs.
v ⚡
Quick & Easy Installation: Shank diameter and square size match
standard tap dimensions; QA system allows rapid tap replacement.
v 🛡️
Die Safety Clutch: Advanced ball-clutch or overload clutch protects taps
from breakage.
v 🎯
Consistent Thread Accuracy: Delivers uniform, high-quality threads
across large production runs.
v 🛡️
Precision-Ground Components: Close-tolerance parts ensure smooth
performance and reliable interchangeability.
v 🔂
Single-Cut Functionality: Roughing and finishing achieved without tool
change—just a handle adjustment.
v 🧲
Stable Cutting Performance: Rigid construction reduces vibration and
enhances surface finish.
v 🧪
Thread Standards Compatibility: Supports NPT, BSP, BSW, UNF, UNC, and
Metric threads.
⚙️ Operating Highlights
v Threading
Speed Range: Efficient between 100–300 RPM depending on material hardness
and die condition.
v Material
Hardness Capability: Suitable for metals up to 20 HRC.
v Quick
Installation: Tap insertion and alignment simplified with square nut and
chuck system.
📌 Safety &
Performance Tips
v 💧
Use Coolant: Apply cutting fluid for better finish and longer die life.
v 🔄
Avoid Overload: Rotate between units for heavy-duty use; avoid extreme
capacity limits.
v ✅
Correct Setup: Ensure proper die seating and tap alignment before
operation.
v 🧪
Trial Cut First: Always verify thread size with a trial cut before full
production
Designed for precision external
threading in both manual and automated setups, the DR Series die heads feature
automatic opening, circular chaser technology, and universal machine
compatibility—ideal for high-speed, high-volume production environments.
🔩 DH
Series Die Holder – Quick Smart Analysis
|
Aspect |
Details |
|
🔧
Type |
Stationary Die Holder
– engineered for external threading using standard HSS dies |
|
⚙️
Function |
Holds and drives threading dies
securely; enables precise thread cutting without spindle reversal |
|
🔄
Mechanism |
Rigid chuck system
with square nut and QA setup ensures stable die seating and smooth operation |
|
📐
Thread Range |
Supports NPT, BSP, BSW, UNF,
UNC, and Metric threads across multiple sizes |
|
🛠️
Applications |
Suitable for drilling,
milling, radial drilling, CNC, VMC, HMC, and electric tapping machines |
|
✅
Advantages |
Cost-efficient threading – Quick
die change – Consistent accuracy – Reduced tooling inventory |
|
🏭
Use Case |
Ideal for workshops
requiring versatile threading across MS, CI, low carbon steel, aluminum,
copper, and steel |
Ø Universal
machine compatibility with drilling, milling, radial drilling, CNC, VMC, HMC,
and tapping machines
Ø Right-
and left-hand thread capability with dedicated dies
Ø Multi-thread
standard support (NPT, BSP, BSW, UNF, UNC, Metric)
Ø Single-cut
threading (roughing and finishing without tool change)
Ø Precision-ground
components for vibration-free performance and superior finish
Ø Detects
torque overloads and misalignment during threading
Ø Evaluates
die seating, clutch response, and thread engagement
Ø Provides
alerts for inconsistencies in thread profile, feed rate, or die wear
Ø Reduces
tooling costs by using standard dies across multiple sizes
Ø Ensures
consistent thread accuracy and superior finish
Ø Minimizes downtime with quick die changes and
easy installation
Ø Extends
tool life through overload clutch protection
Ø Supports predictive maintenance and operator feedback in automated setups
TOOLS AND APPLIANCES CORPORATION
BLOCK NO.: 135/2, BILESHWARPURA, P.O. CHHATRAL - 382729,
TA. KALOL ( N.G.), DIST. GANDHINAGAR.
MO. 6355213404, 6355251586,
Email :- taco@imitoolsindia.com, salestaco@imitoolsindia.com.
