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Double
Ended | Reduced
Headed | Regular
Headed | Advanced
The Tappex Trisert range of brass self-tapping inserts
includes three primary designs: Double Ended, Reduced Headed, and Regular
Headed variants, to solve most application problems in thermoset and thermoplastic
grades including the latest engineering plastic alloys. The concept of the design is to provide a reliable and efficient post-mould production process, where the installation torque can be controlled and monitored for increased reliability.
TRISERT
FEATURES
TRISERT
PRODUCT SELECTOR |
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Double
Ended | Reduced
Headed | Regular
Headed | Advanced
A self-tapping, double ended insert available in short,
regular and long lengths in a range of thread sizes from M2 to M10. The
Double Ended Trisert has a lead on both ends simplifying the installation
process and requiring less operator skill. The three cutting flutes and
coarse external thread form increase the radial and pull-out performance
making the Double Ended Trisert ideal for use in thermoplastics where
there is a gap, or gasket or ‘O’ ring, between the mating
parts. It can also be used in a pull-through mode.
TRISERT DOUBLE ENDED PRODUCT SELECTOR |
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Double
Ended | Reduced Headed | Regular
Headed | Advanced
Self-tapping, reduced headed inserts that may be manufactured in short, regular and long lengths in a range of thread sizes from M3 to M8. The Reduced Headed Trisert allows greater tightening torques due to its increased bearing surface, which also provides more support for softer mating components. The head diameter is designed to exactly fit the counter bore in the moulded hole and thus provides a neat flush fit finish where required.
TRISERT
REDUCED HEADED PRODUCT SELECTOR |
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Double
Ended | Reduced
Headed | Regular Headed | Advanced
Self-tapping, headed inserts available in short and regular lengths in a range of thread sizes from M2.5 to M10. The Regular Headed Trisert allows greater tightening torques due to its increased bearing surface, which also provides more support for softer mating components. This insert is particularly suitable where there is a large or slotted clearance hole in the mating component, or where the insert head is required to sit proud on top of a boss section. For maximum performance they can be used in a suitable pull-through application.
TRISERT
REGULAR HEADED PRODUCT SELECTOR |
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Double
Ended | Reduced
Headed | Regular
Headed | Advanced
The unique Trisert self-tapping range of inserts is also
available in an advanced engineered range for critical plastics and all
thermoset materials. The closely controlled external thread allows effective
cutting in hard urea, melamine and phenolic materials without cracking
or moulding damage. The unique cutting form combined with the perfect
symmetry of design significantly improves the performance of the insert
in hard plastics..
To specify Trisert Advanced part no.s select THERMOSET from the relevant Trisert Selector page.
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Reduced Headed | Blind
Ended
Designed for critical conditions, the robust Trisert-3
can withstand harsh environments and corrosive atmospheres. It has been
designed to provide a reliable, strong and wear resistant thread in applications,
environments and materials that would be unsuitable for brass inserts.
The Trisert-3 is available in two
lengths - regular and long - and is based on the Trisert Reduced Headed
design. It is manufactured in two grades of stainless steel plus case
hardened steel with an electro-plate finish.
TRISERT-3
FEATURES
TRISERT-3
PRODUCT SELECTOR |
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Reduced Headed | Blind
Ended
Available in regular and long lengths in thread sizes from M3 to M10. The three cutting facets and coarse external thread form increase the radial and pull-out performance and provide balanced cutting forces for ease of installation. The reduced head offers a greater area over which application loads can be taken without increasing the receiving hole diameter. Additionally the reduced head provides a simple means of orientating the part for correct installation.
TRISERT-3
REDUCED HEADED PRODUCT SELECTOR |
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Reduced Headed | Blind Ended
With the same external features as the standard Trisert-3 the blind ended version is supplied with a closed end. This variant offers all the benefits of the standard part enhanced by the specific advantages offered by a blind insert where the application dictates this is required. Offered initially in M10 and Stainless Steel only, other thread sizes will be considered when requested.
TRISERT-3
BLIND ENDED PRODUCT SELECTOR
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Double Ended | Reduced
Headed
The Foamsert is a special version of the Trisert and
has a very coarse truncated external thread form. Like the Trisert it
has three equidistant cutting flutes over the length of the external form
and it is this unique combination that makes the Foamsert ideally suited
for use in structural foam materials, laminated chipboards, medium density
fibre board and certain types of glass reinforced plastics.
Continuous product development has led to a headed version of the Foamsert
providing all the benefits of the headed Trisert in an expanded range
of materials. This innovative new design adds a significant degree of
versatility to the existing inserts for plastics. Both the Double Ended
and Reduced Headed versions are installed using a reversible driving mechanism.
FOAMSERT
FEATURES
FOAMSERT
PRODUCT SELECTOR
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Double Ended | Reduced
Headed
The Foamsert is a development of the Trisert with a coarse external thread form. Ideally suited for use in structural foam materials, wood and wood derivatives, and low density materials. The specially designed external form maximises performance in these types of material.
The Double Ended Foamsert has a lead on both ends and
can, therefore, be installed either way up, significantly simplifying
the installation process. For high volume applications in particular,
the double ended version facilitates the design of simple bowl fed mechanisms
for automatic installation equipment, thus reducing tooling costs.
FOAMSERT
DOUBLE ENDED PRODUCT SELECTOR
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Double Ended | Reduced Headed
The Reduced Headed Foamsert provides a longer length than the standard Foamsert. The reduced head design offers an increased bearing surface allowing higher tightening torques. Use where a flush fit is required.
FOAMSERT
REDUCED HEADED PRODUCT SELECTOR
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Unheaded | Single
Thickness Head | Double
Thickness Head | Microbarb
The Tappex Multisert range of brass inserts for plastics
has been developed to provide a multi-purpose insert for various environments
and application criteria. It includes four primary designs: Unheaded,
Single Thickness Head (single thickness head at standard and reduced diameters),
Double Thickness Head (double thickness head at standard and reduced diameters)
and Microbarb.
The Microbarb incorporates all the standard features
of the Multisert range but provides the designer and production engineer
with an insert suitable for pull through applications in thin section
materials.
MULTISERT
FEATURES
MULTISERT
PRODUCT SELECTOR |
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Unheaded | Single
Thickness Head | Double
Thickness Head | Microbarb
A barbed, unheaded insert available in short and regular
lengths in a range of thread sizes from M2 to M12.
The Unheaded Multisert is for use in thermoplastics where
the mating component sits flush. The plain top ring provides a good bearing
surface. It should be specified for use in flexible materials which allow
cold press fit insertion, for optimum production rates. For improved performance,
it can be press fitted with heat or ultrasonics, when the fill of molten
plastic around the barb form is maximised. Press fitting into harder or
flame retardant materials requires heat or ultrasonic assistance in any
event. It can also be used as a pull-through insert where a stepped hole
design is possible.
MULTISERT
UNHEADED PRODUCT SELECTOR
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Unheaded | Single Thickness Head | Double
Thickness Head | Mircrobarb
A barbed, single thickness headed insert available in
short and regular lengths and two head diameter options. Available in
a range of thread sizes from M2 to M8.
The Single Thickness Head Multisert is for use in thermoplastics
where increased rotation resistance is required. The head also helps prevent
jack-out in applications where an air gap or gasket sits between the mating
parts. The large diameter head option also provides an excellent electrical
conductive surface for ring connectors or eyelets. Designed for cold press
fit or installation with heat. Ultrasonic insertion is NOT recommended,
with this version.
MULTISERT
SINGLE THICKNESS PRODUCT SELECTOR
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Unheaded | Single
Thickness Head | Double Thickness Head
| Microbarb
A barbed, double thickness headed insert available in
short and regular lengths and two head diameter options. Available in
a range of thread sizes from M1.6 to M10.
The Double Thickness Head Multisert is for use in thermoplastics
where a thicker head is needed to provide sufficient strength for high
performance pull through applications. It can also provide a stand off
assembly condition for clearance or heat sink applications.
Additional pull through performance can be obtained by using a suitable
stepped hole design.
MULTISERT
DOUBLE THICKNESS HEAD PRODUCT SELECTOR
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Unheaded | Single
Thickness Head | Double
Thickness Head | Microbarb
A barbed, large headed insert available in extra short
lengths in a range of thread sizes from M2 to M10.
The Microbarb Multisert has been designed with a larger
head and barb diameter to provide increased bearing surfaces in thin section
materials. The insert can be pressed-in cold or with heat and is primarily
used in a pull through mode in thermoplastics, but it can be used in thermosets
with a tensile strength of less than 100Mpa and some degree of resilience.
MICROBARB
PRODUCT SELECTOR
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HiMould Type A | HiMould
Type B | HiMould
Type C
The Tappex HiMould range of brass inserts has been designed
as a technical improvement on the superseded Yardley style of insert,
specifically for moulding-in during the cycle of the moulding machine.
This is the traditional method of placing metal inserts in plastic mouldings,
although normally the insert is laboriously screwed onto threaded pins
located inside the mould tool. With the HiMould range, this costly and
inefficient process becomes unnecessary, as the insert can be rapidly
located on to plain pins giving higher productivity and reducing tool
down time. Despite the use of plain pins the unique design of the HiMould
insert still gives guaranteed flash free threads. By using sleeve ejectors
around the pins to push off the moulding, this can simplify the mould
tool design and also provide a faster and more reliable moulding process,
thereby increasing productivity. Tappex HiMould inserts have become widely
used in all types of thermoplastic and thermoset plastic mouldings.
HiMOULD
FEATURES
HiMOULD
PRODUCT SELECTOR
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HiMould Type A | HiMould
Type B | HiMould
Type C
The HiMould Type A is a blind-ended design of insert
specifically for moulding-in available in a range of thread sizes from
M3 to M6.
The Type A insert is designed to be installed on a plain
pin in the mould tool. It has all of the advantages of the more popular
Type C insert but is particularly suited for use in applications where
space is restricted. The short length increases its versatility and whilst
shortening the bolt engagement length still provides a similar number
of full threads.
The HiMould Type A, part number 116-, replaces the original
Yardley Type A part number 016- being identical, except for the addition
of the two external undercuts which increase pull-out performance.
HiMOULD
TYPE A PRODUCT SELECTOR |
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HiMould
Type A | HiMould
Type B | HiMould
Type C
The HiMould Type B insert is an open ended design for
moulding-in available in a range of thread sizes from M2 to M12.
The Type B insert provides a low cost option where a
through hole in a moulding is acceptable. The Type B insert is engineered
to close tolerances enabling a guaranteed flash free thread when using
fixed shouldered pins in the mould tool. Also as it offers the shortest
standard length for a given thread size in the HiMould range it is ideally
suited for use in thin section applications.
NOTE: For thread sizes M2 and M2.5 where the undercuts
are impractical to include, the superseded Yardley part number 017- without
undercuts, is specified.
HiMOULD
TYPE B PROUCT SELECTOR |
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HiMould
Type A | HiMould
Type B | HiMould Type C
The HiMould Type C is a blind-ended design of insert
specifically for moulding-in available in a range of thread sizes from
M2 to M10.
The Type C insert has been developed as a technical advance
on the Type A by incorporating a counter-bore in the open end, which press
fits on to a suitable design of tapered shouldered pin in the mould tool.
This prevents any molten plastic flashing into the insert threads, in
both low and high pressure environments, whilst still allowing plain pins
to be used in the mould tool.
This feature is particularly useful for high volume production
where the moulding machine is fully automatic and the removal of the moulding
is handled by a robotic arm, which can also be used for loading the inserts
into the mould tool without interrupting the optimum mould cycle period.
This is achieved by using small air cylinders to generate a percussive
force to position each HiMould insert onto its shouldered pin. Sleeve
ejectors are then used to push off the inserts with the moulding.
NOTE: For thread sizes M2 and M2.5 where the undercuts
are impractical to include, the superseded Yardley part number 018- without
undercuts, is specified.
HiMOULD
TYPE C PRODUCT SELECTOR |
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Grooved Pin Standard | Grooved
Pin Headed | Blind
Drive Pin Rivets
The Grooved Pin has three longitudinal grooves swaged or formed into a cylinder of material, this has the effect of increasing its diameter. In each application, installation of the grooved pin causes the grooves to compress, this compression produces outward pressure on the walls of the hole and in so doing secures location of the pin. The pin is held in position under elastic tension and therefore cannot be easily dislodged in harsh environments.
A wide variety of standard pin types are available for many applications eliminating the need for more labour intensive or complex fasteners.
The Grooved Pin range has provided fastening solutions in a number of industry sectors including: machine building, chemical equipment, manufacture, precision engineering, automotive and electrical engineering.
GROOVED
PIN FEATURES
GROOVED
PIN PRODUCT SELECTOR |
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Grooved Pin Standard | Grooved
Pin Headed | Blind
Drive Pin Rivets
The fastener incorporates three longitudinal grooves
formed into a cylinder of material which effectively increases its diameter.
Resistance to withdrawal occurs whenever the grooved diameter is compressed.
There are 18 standard variants, 10 of which are described in our detailed
information.
GROOVED
PIN STANDARD PRODUCT SELECTOR |
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Anti-creep spacers are designed to provide reinforced clearance holes for bolts to pass through in a plastic moulding, and thus allow metal-to-metal tightening torques to be applied to an assembly without over-stressing the plastic.
The design of the spacer is carefully defined with relation to the plastic section and the mating parts, so that the amount of clamping force applied to the plastic is limited. This prevents the plastic from „creeping away‰ with time and elevated temperature, which reduces the overall clamping force, allowing the bolt to loosen under vibration.
The spacers can be designed for either mould-in or post mould press-fitting, for use with both thermoset or thermoplastic mouldings, and can be manufactured in brass or steel depending upon the application.
ANTI-CREEP
SPACERS FEATURES |
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Male HiMould | Male
Multisert | Male
Trisert
Tappex offer a range of Male Inserts based upon the female equivalent. The basic insert families and variants of Trisert, Multisert or HiMould are available in various male threaded lengths depending upon previous customer requirements.
Generally Male Inserts are manufactured to meet designers specific needs. To reduce costs and lead time Tappex will try to meet your requirements by supplying the closest available part from stock, however please discuss your requirements with us as we may be able to manufacture to your specification.
MALE
INSERT DETAILED INFORMATION
MALE PRODUCT SELECTOR
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If there is not a standard Tappex insert, which suits your application,
you may well find that there is already a ‘Special' Tappex insert
available that is suitable. For larger order quantities inserts can often
be produced as ‘Specials' to the customer's requirements.
Apart from the many variations on our standard range of inserts, Tappex have developed some specialised products for particular application conditions.
SETSERT®
Available as a Single and Double Ended brass insert for press fitting into harder or filled grades of Thermoplastic and Thermoset materials, designed to optimise high volume applications where automatic feed equipment is justified. Please contact us to discuss availability.
SURESERT®
A Double Ended brass insert designed for heat insertion only, the curved knurl form makes it most suitable for stress prone thermoplastic materials. Please contact us to discuss availability.
DEDSERT™
A Single Ended brass insert available Headed and Unheaded for heat or ultrasonic installation into Thermoplastic materials. Please contact us to discuss availability.
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VANDLGARD®
Tappex tamper proof break off fastening system to guard against theft or vandalism. Please contact us to discuss availability.
VANDLGARD FEATURES
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Slotted | 'H'
Type | Thin
Wall Slotted | Thin
Wall 'H' Type The Ensat is a single ended self-tapping threaded insert with an internal and external thread.
These inserts are produced in standard and thin wall configurations with either a single slot or multiple holes providing the thread cutting features.
The Ensat is suitable for installation into a range of materials including Plastics, Light Alloys and hard woods.
The inserts are generally available in case hardened steel with a zinc and passivated finish and austentic or ferritic stainless steel.
Other materials are available, please contact our sales department.
ENSAT
FEATURES
ENSAT
PRODUCT SELECTOR |
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Slotted
| 'H'
Type | Thin
Wall Slotted | Thin Wall 'H' Type
Developed using sophisticated manufacturing techniques, the outside and
internal threads are synchronised giving minimum wall thickness. Allows
effective replacement of wire thread inserts in small diameter bosses.
This design gives added strength for use in hard materials which require
more force to install.
ENSAT
H TYPE THIN WALL PRODUCT SELECTOR |
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