Insert Systems
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Emhart Teknologies, Shelton, CT 3U Tel. (877) EMHART-1 U Fax (800) 225-5614
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Teknologies.
supplier, we are a business partner.
manufactured to only the highest quality standards. We are more than just a
Heli-Coil wire inserts are manufactured with over 70 years of experience. We
AS9100 Rev. B, ISO 9001: 2000 and ISO/TS 16949: 2002. A comprehensive
reliability and integrity.
highly regarded products in the industry. Since its inception in 1938, Heli-Coil has
Heli-Coil® precision formed wire inserts are readily recognized and
been identified as an industry leader offering products with superior performance,
Our strict quality programs ensure that we meet the latest industry standards of
Business Management System elevates our quality levels well above our
competitors.
are dedicated to exceeding our customers' expectations by providing innovative
value-added design and engineering services, on-time deliveries and excellent
customer service support. Heli-Coil is committed to developing superior products
Heli-Coil® is a registered trademark of Emhart®
Wire Inserts
®
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0755-88843616 www.szjya.com
Emhart Teknologies, Shelton, CT 4 U Tel. (877) EMHART-1 U Fax (800) 225-5614
Canada (514) 351-0330 U Mexico +52-55-5326-7100
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Table of Contents
Tangless Tools........................................................................... 34
Tang Removal Tools ................................................................. 33
Power Inserting Tools, Inch & Metric................................... 30-32
Hand Inserting Tools ................................................................ 29
Types of Tools, Tool Service.................................................... 28
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Gages, Metric ........................................................................... 27
........... 26
25STI Tap Dimensions, Metric...........................
24STI Tap Part Numbers,
STI Tap Dimensions, Inch ....................................................... 23
STI Tap Part Numbers, Inch ................................................... 22
Tapping Data, Inch & Metric .................................................. 20-21
Drilling Data, Inch & Metric.................................................... 18-19
Drilling, Countersinking, Tapping, Gaging
Engineering Data...................................................................... 17
Assembly Design...................................................................... 16
Thread Repair Kits and Master Sets..................................... 15
Tangless Insert Specifications............................................... 14
Tanged Insert Specifications, Inch & Metric ...................... 12-13
Design Data............................................................................... 11
Torque Data ............................................................................... 10
Insert Material .......................................................................... 9
Coatings & Plating.................................................................... 8
Industry Standards and Specifications ................................ 7-8
Stud Lock Inserts...................................................................... 7
Hi-Torque Inserts...................................................................... 7
Screw Locking Inserts............................................................. 7
Features & Benefits ................................................................. 6
Types of Inserts......................................................................... 5
General Description of Heli-Coil Inserts............................... 5
Page
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Assembly Strength
Corrosion Protection
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Metric................................................
.........................
Gages, Inch.....................................................................
TanglessHeliCoil® ® inserts are licensed from Kato.
The descriptions, specifications and other claims made with respect to the products featured in this catalog
are made as of the date of printing. Emhart retains the right to discontinue production or make improvements
or other changes to any of its products without notice.
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Administrator
Inserted Text
Emhart Teknologies, Shelton, CT 5• Tel. (877) EMHART-1 • Fax (800) 225-5614
Canada (514) 351-0330 • Mexico +52-55-5326-7100 AS 9100 Rev. B
www.emhart.com C E R T I F I E D • ISO 9001:
2000• ISO/TS 16949: 2002
Heli-Coil® screw thread inserts
page 9 for material availability.
Heli-Coil inserts are precision
formed coils of extremely hard,
diamond shaped 304 stainless
steel. When installed into an
STI tapped hole, they provide
permanent conventional 60°
internal screw threads. This
assembled insert accommodates
any standard bolt or screw as
per MIL-S-7742 and AS8879
(UNJ controlled root radius). See
• UNC
Tanged Size Range:
#1 through
• UNF
1-1/2
#2 through
• Metric
1-1/2
Coarse M2 through
• Metric
M39
Fine M8 through
Tangless – which provides self-
available in both Tanged and
SCREW-LOCK –
Tanged and Tangless – which
or Free Running STANDARD
Types of Inserts
Inserts are also available in UNEF,
M39
UNS, 8UN, 12UN, 16UN, Spark
Plug and Pipe Thread.
There are two styles of
Heli-Coil inserts. The
Insert – available in both
provides a smooth free-running
thread; and
locking torque on the male
member by a series of “chords”
on one or more of the insert
coils. They are available in inch
series, coarse and fine and
metric series, coarse and fine.
Inch series Screw-Lock inserts
are dyed red for identification.
Illustration of the Retention Principle
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0755-88843616 www.szjya.com
Emhart Teknologies, Shelton, CT 6 U Tel. (877) EMHART-1 U Fax (800) 225-5614
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Additionally, our Sales Engineers,
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well as the U.S. Military. Successful
industry’s leading companies as
torque, shear, vibration and fatigue
the manufacturing process.
Stringent Quality Assurance
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ranging from –320°F to +800°F.
can be used in temperatures
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of the mirror-smooth surface
bolt tension are assured with
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allowing a wide choice of
provide design flexibility by
cost and Heli-Coil inserts
Cost savings abound. Lower
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has been made for an insert,
designs, where no provision
be incorporated in existing
smaller bosses, flanges and
Heli-Coil inserts allow use of
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place – the outward spring-like
because there is no staking,
into the parent material
Virtually no stress is introduced
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lengths are available in each
material damage. Five insert
failure rather than parent
Bolt tensile strength can be
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minimize galvanic action
conditions, Heli-Coil inserts
Under normal environmental
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eliminate erosion of the
and surface finish practically
because the insert hardness
assembly and disassembly
Thread life is dramatically
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of the insert provides a more
Tapped threads are strengthened
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positive means for protecting and
strengthening tapped threads in any
material. The unique design features
of the insert offer many benefits.
because the inherent flexibility
balanced distribution of dynamic
and static loads throughout the
length of thread engagement.
This flexibility also compensates
for variation in lead and angle
error allowing each coil to carry
its share of the load.
increased even after repeated
thread form due to friction.
within the threaded assembly
because of their superior
corrosion resistance.
balanced against parent material
shear strength, assuring bolt
thread size.
locking, swaging or keying in
action of the insert holds it in
place.
fasteners than any other insert.
Heli-Coil inserts can generally
without increasing boss size.
insert cost, lower installation
parent materials while
maintaining maximum
threaded assembly strength.
Maximum clamping action and
minimum wrench torque because
finish of Heli-Coil inserts.
Heli-Coil stainless steel inserts
and Engineering Standards are
rigidly enforced in all phases of
This assures integrity of your
product design.
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Heli-Coil inserts are available
mounted on plastic strips and wound
onto reels (500 or 1000 inserts
per reel). With power installation
tooling, use of strip feed inserts will
substantially increase installation
rates by minimizing handling.
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Heli-Coil Standard and Screw-lock
Inserts are the original – and have
an extensive background of tension,
tests conducted by American
applications in the fields of aviation,
electronics, industrial, automotive
and military equipment provide a
wealth of experience and confidence
in the performance and reliability of
Heli-Coil inserts.
In addition to the benefits listed
above, Heli-Coil provides a wide
range of support to solve fastening
problems. This manual is one of them
– the following pages are presented
in a manner to make it easy to
“design-in” Heli-Coil inserts to take
advantage of the extraordinary
benefits they provide.
Applications Engineers and
Design Engineers are available for
consultation for specific designs.
When the product gets to the
manufacturing phase, our extensive
experience in production tooling and
installation techniques ensures that
you can indeed make your product
better with Heli-Coil inserts.
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0755-88843616 www.szjya.com
Emhart Teknologies, Shelton, CT 7U Tel. (877) EMHART-1 U Fax (800) 225-5614
Canada (514) 351-0330 U Mexico +52-55-5326-7100 !3������2EV��"�s�)3/�������
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Heli-Coil® screw locking thread inserts
locking mechanisms.
plastic pellets/patches and other
washers, chemical compounds,
of lock wiring, lock nuts, lock
money, through the elimination
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loss of self-locking torque.
disassembly without appreciable
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under vibration or impact.
prevents it from loosening
inserts) that grips the bolt and
(applies to Heli-Coil screw-lock
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and MA1565.
complying with NASM8846
Positive self-locking torque,
Screw-Lock Inserts:
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LOCKING FEATURES & BENEFITS…
3082, 3083
AS1229, AS3080, 3081, UÊ �iiÌÃÊ
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threaded rod.
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space-saving stud applications.
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prevailing torque levels.
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in highly lubricated applications.
compensates for reduced friction
higher prevailing torque
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Hi-Torque Inserts:
applications.
Stud-Lock Inserts:
s� Highest prevailing torque insert
available.
Locks Adjusment
Screws. This simple
design allows
permanent, positive
adjustment of screws
in any position,
secure against
vibration or impact.
Inaccessible or
Miniaturized
Assemblies. Heli-Coil
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permit the installation
of the lock from the
front or top. No blind
fumbling for assembly
of lock washers or
lock nuts behind or
underneath.
Lock Set Screws.
Positively locks
assembly against
loosening at desired
adjustment –
protects threads
against stripping
under high torque –
permits use of light
housing materials.
The locking action is achieved by one or more of the insert
coils having a series of straight segments or “chords”. When
the bolt enters the “grip”ÊV]ÊÌ
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positive and consistent self-locking torque over more cycles
than any other prevailing torque mechanism.
Heli-Coil offers three types of
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Thread, Helical Coil, Free
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Series), Standard Dimensions,
Thread, Helical Coil (Metric
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Helical Coil Coarse Thread
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U NASM122076 thru NASM122275.
U NASM124651 thru NASM124850.
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Heli-Coil® industry standards
Industry Standards
Heli-Coil inserts and tooling comply with the following Standards and
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Emhart Teknologies, Shelton, CT 8 U Tel. (877) EMHART-1 U Fax (800) 225-5614
Canada (514) 351-0330 U Mexico +52-55-5326-7100
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Heli-Coil®Ê`ÕÃÌÀÞÊÃÌ>`>À`Ã
Heli-Coil® ÊÃiÀÌÊV>Ì}ÃÊEÊ«>Ì}Ê
Available in blue, green, red, and black*
Material Spec: QQ-P-416 Type II
Plating Benefits
Helical Coil Screw Thread
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Insert, Screw UÊ �-�
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Special Locking Torque Inserts
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. Screw Thread UÊÊ �
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Thread, Helical Coil (Inch Series)
Coatings/
Dry Film Provides additional lubrication in high friction applications
Lubricant High temperature resistance (400°F)
Highly recommended with Heli-Coil Screw-Lock inserts
Mildly corrosion resistant
Material Spec: �AS5272
� Color: Grey�
Cadmium Provides high corrosion resistance
Plating Provides lubrication to prevent galling
(Not recommended for new design due to its toxic nature)
Color: Iridescent yellow - Free-Running
Color: Olive drab - Screw-Lock
�
Primer- Contains no chromates
Free® II� Eliminates need for zinc primers and epoxies
Prevents galvanic corrosion between insert and parent material
Eliminates locking torque issues associated with primers
Improves installation productivity
Provides additional lubrication facilitating insert installation
Material Spec: None
� Color: Matte black
Silver Recommended to reduce galling of threads at high temperatures
Plating For use up to 1200ºF
Material Spec: QQ-S-365
� Color: Silver white
Color Facilitates verification of insert installation
Coding Allows for quick identification of similar size inserts
Inserts, Wire Thread, UÊ �-n{xÈ
Inserts, Wire Thread, UÊ �-n{xx
Inserts, Wire Thread, UÊ �-ÈÇÎ{
Inserts, Wire Thread, UÊ �-ÈÇÎÎ
Coil, Cadmium Plated (Metric
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Coil, Cadmium Plated (Inch
Insert, Screw UÊ ��-ÎÈääÎÈ
Inserts, Free Running and
* All Heli-Coil Inch Screw-Lock inserts are supplied with a red coloring in accordance with NASM21209.
Screw Locking (Metric Series)
Thread, Screw Locking, Helical
Series)
Insert, Screw
Thread, Screw Locking, Helical
Series)
(UNF) - Unplated
(UNC) - Unplated
(UNF) - Cadmium Plated
(UNC) - Cadmium Plated
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0755-88843616 www.szjya.com
Emhart Teknologies, Shelton, CT 9U Tel. (877) EMHART-1 U Fax (800) 225-5614
Canada (514) 351-0330 U Mexico +52-55-5326-7100 !3������2EV��"�s�)3/�������
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Heli-Coil inserts are available in a wide choice of materials to suit specific application needs.
Contact Heli-Coil Applications Engineering to determine the correct material for your specific application.
304 Stainless Steel
material
Inconel X750
temperatures
engines, nuclear applications,
well drilling
Phosphor Bronze
conductivity
Nitronic 60™
screws
or plating
Tensile: 200,000 – 250,000 PSI
Temperature range: up to 800ºF
Material Spec: AS7245
Hardness: RHc 43-50
Corrosion resistance: Moderate
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(depending on wire size)
Tensile: 200,000 PSI
Temperature range: up to 1,000ºF
Material Spec: AS7246
Hardness: RHc 43-50
Corrosion resistance: High
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Tensile: 140,000 PSI
Temperature range: up to 250ºF
Hardness: HRB 95
Corrosion resistance: High
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Tensile: 200,000 PSI
Temperature range: up to 500ºF
Material Spec: UNS S21800
Hardness: RHc 43-50
Corrosion resistance: Moderate
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Titanium
ratio
stability
Magnetic Permeability:
Tensile: 150,000 to 220,000 PSI
Temperature range: up to 600ºF
Note: Nitronic 60™ is a trademark of AK Steel
Material Spec: AMS 4957 &
AMS 4958A
Hardness: RHc 35-43
Corrosion resistance: High
non-magnetic
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0755-88843616 www.szjya.com
Emhart Teknologies, Shelton, CT 10 U Tel. (877) EMHART-1 U Fax (800) 225-5614
Canada (514) 351-0330 U Mexico +52-55-5326-7100
!3������2EV��"�s�)3/������� www.emhart.com
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Heli-Coil® ÊÃVÀiÜÊVÊÌÀµÕiÊ`>Ì>
derived for stainless inserts only.* These sizes are not included in NASM8846. Torque values shown are interpolated from sizes that are included. All torque data
I and II shown below. The values
the locking torque value of Tables
Heli-Coil Screw-Lock inserts meet
shown conform to NASM8846 (inch
series) or MA1565 (metric series)
requirement.
to the screw or insert to minimize galling and maximize cycle life. To im-
IMPORTANT NOTE: When using heat-treated steel screws or stainless steel
screws with a Screw-Lock insert, an anti-seize compound MUST be applied
prove the wear life of the screws in Screw-Lock insert applications, specify
Nitronic 60 material, Primer Free II coating, Dry Film Lubricant (Molybdenum
Disulfide) or Cadmium plating be applied to the insert.
-
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