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Fasten multiple workpieces unilaterally
POP Rivets

The POP one-sided fastening method makes for fast, high-precision assembly lines. It enables quick assembly on assembly lines with low-skill workers, helping to reduce costs compared to welding and tapping screws. Long operating hours are possible with POP light-weight fastening tools and they are suitable for automating assembly lines. This environmentally-friendly fastening method does not generate sparks.

Rivet
diameter
Ø2.0 Ø2.5 Ø3.0 Ø3.2
Ø4.0 Ø4.8 Ø6.4 Ø10.2
Grip range 1.0mm~25.6mm
Material Aluminum, Steel,
Stainless steel, Copper
POP Rivwt Sectional view
POP Rivet Fastening Process Movie
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For assembling POP Rivets
POP Rivet Fastening Tools

POP fastening tools can fasten POP Rivets and HUCK Fasteners easily. Choose a suitable tool type from manually operated, electric, battery-operated or air-hydraulic depending on the situation.

Air hydraulic ProSet1600A ProSet2500A ProSet3400 AutoSet5&6 etc.
Battery MCS5800
Electric ER600A
Manual PS15 PS20 PS40
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Rivet supply tape tool
AVDEL Speed Fastening System

Since next fastener is automatically delivered to the nose of the tool, ready to repeat the assembly process.AVDEL Speed Fastening System Sectional view

Rivet diameter Ø2.4 Ø2.8 Ø3.0 Ø3.2 Ø4.0 Ø4.8
Material Aluminum, Steel , Stainless steel
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Suitable for applications which need especially high strength
AVDEL Lockbolt

One Piece

Cross-sectional view of the one-piece typeHigh-strength fastener which can be unilaterally fastened simply and speedily.

Type Interlock, Avbolt
Two Piece

Cross-sectional view of the two-piece typeBecause the collar is squeezed onto the pin's parallel groove, it does not loosen even under high vibration.

Type Avdelok, Maxlok
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Attach nuts to metal & plastic workpieces unilaterally
POP Nut

The POP one-side fastening method allows fast nut setting. Enables quick assembly on assembly lines with low-skill workers, helping to reduce costs compared to welding nut, burring tap and bolt & nut methods.POP Nut Sectional view Installation after surface treatment and in the later processes is possible because nuts do not damage the surface.

Thread size M3 M4 M5 M6 M8 M10 M12
Grip range 0.5mm~6.0mm
Material Aluminum, Steel, Stainless steel
POP Rivet Fastening Process Movie
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Fix bolts in plastic and metal workpieces unilaterally
HB Bolts

Bolts can be fixed easily in plastic and metal workpieces unilaterally with air hydraulic hand tools. Insert bolts and weld bolts can be replaced with HB Bolts.

Thread size M6 M8
Grip range 0.5mm~4.5mm
Material steel
HB Bolts Sectional view
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For assembling POP Nuts and POP inserts
POP Nut Fastening Tools

POP fastening tools can fasten POP Nuts and POP insert easily. Choose a suitable tool type from manually operated, electric, air pressure and air-hydraulic tools depending on your situation.

Air hydraulic PNT800A PNT800L-PC PNT1000L PNT1000L-PC etc.
Air pressure AN-500A
Electric EN600A EN1000A
Manual PNT110 PNT210 MN-10A
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Design and manufacture based on customers' specifications
POP Automation Systems

Based on customer's specifications, NPR designs and manufactures fastening systems from jigs that hold things in place vertically to fully automated assembly lines. NPR approaches fastening as a system and offers a total fastening system from fasteners to auto-fastening systems.

POP Rivets RivetKwik multi-axis riveting automatic rivet feeding etc.
POP Nuts NutKwik automatic nut feeding etc.
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Assemble multiple workpieces without pre-piercing
Self-piercing Rivet

Since the workpieces are not pre-pierced, it is possible to join pieces in arbitrary positions. Pieces made from dissimilar metals, plastics and similar metals that are unsuitable for welding can all be assembled. Galvanized and painted steel pieces can be fastened together and no processes such as welding are needed after. The process produces no sparks and there is little noise or vibration.

Movie of Fastening step as seen from the cross-sectional
Rivet diameter Ø3.2 Ø5.2 Ø5.3
Grip range 0.8mm~6.5mm
Material steel
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A new fastening method to replace spot welding
Self-piercing Riveting Systems

This electric system automatically feeds rivets to the tool using a feeder. Position-controlled setting of rivets driven with a servo motor enables stable riveting. A monitor screen diplays pressure curves and displacement for judging riveting results.

Unit Tool C-frame Feeder Control unit
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Small, simple SPR system that is easy to use, either manually or an automatic
POP JOISPND

Compact, easy-to-use operation hydraulic SPR equipment. The DAS type spools rivets loaded on the belt feeds automatically with a cylinder system. The DAF type automatically feeds rivets to the tool using a feeder equipped with jig or robot for automated assembly lines.

Unit Tool C-frame Feeder Hydraulic system unit
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Design and manufacture based on customers' specifications
Plastic Clips

Several plastic materials are available depending on the application. Plastic clips can be designed and manufactured based on customers' specifications.

Plastic Clips lineup

Insulator clip, Carpet clip, Pipe clip, Molding clip, Harness clip, Trim clip, Screw grommet, Push clip

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Provide high anti-pull out resistance with one push attachment
Metal Clips

Sun visor holders, side air-bags and assist grips can be attached on the assembly line with one push.

Metal Clips lineup

Overhead clip, Roof-side clip, Roof molding clip, Pillar trim clip, Door trim clip, Trunk molding clip

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Welding studs onto workpieces indispensable for unilateral automobile assembly
Studs

Unilateral welding studs are indispensable for the automobile assembly.
In order to increase the welding strength, weld the edge of the ring flange to the ring stud. Since the welding part is small, the ring stud can be attached to thin workpieces.

Cross-sectional view of Ring Stud High-speed video of Ring Stud
Stud Bolts
Thread size M3 M4 M5 M6 M8 M10
Length 5.0mm~30.0mm
Material Aluminum, Steel, Stainless steel
Xmas Tree Studs
Thread size T4 T5 T6
Length 9.0mm~25.0mm
Material Steel
Others Boss stud, T-stud, etc.
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Attach metal brackets quickly with unilateral welding
Weldfast

Metal brackets can be quickly attached unilaterally with a drawn arc welding system.
Welding stands are not necessary because of the bracket's special shape, so Weldfast helps to lighten the product.
With the DCE, drawn arc welding system, highly stable quality welding becomes possible.

Cross section of “Weldfast” High-speed video of Weldfast
Weldfast
Weight Under 100g
Area of welding 4㎟~100㎟
Length of Welding Under 25mm
Work thickness of weld part 0.8mm~4.0mm
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Weld studs with a drawn arc welding system
Stud Welding Systems

Equipment for welding studs onto workpieces unilaterally. Manual, automatic feed and robot install types are available. DCE is a fully-automatic welding system, consisting of the control unit, the feeder and the welding gun. The control unit monitors all the welding conditions with a digital signal processor. A linear motor is adapted for the welding gun.

Stud Welding movie
DCE unit
Control DCE1800 DCE1500
Feeder ETF50 ETF52 ETF90
Gun head LM310 LM240 LM90 LMR410
Hand gun PK760 PK760M
Others PW1600T PW55T PW90T 等
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Install nuts on thin or unweldable workpieces with pressure
KALEI Nuts

Joints are strong because the knurl anchors workpieces after attachment.Cross section of KALEI Nut Kalei Nuts can be installed not only in steel, but also aluminum and stainless steel unsuitable for welding.

Thread size M2.2 M2.5 M3 M4 M5 M6 M8 M10 M12 M16 M18 M20
Minimum thickness 0.6mm
Material Steel, Stainless steel, Bronze
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Provides high torque & anti-pull out resistance because of press nuts' hexagonal section
ST Nuts

Attach nuts from M3-M6 with pressure. Since nut's hexagonal section is pressed into the workpieces and since the metal sinks into the nut groove, high torque and high anti-pull out resistance can be obtained.Cross section of ST Nuts Can be put into both the surfaces and backsides of pre-pierced workpieces.

ST Nuts Pressing Process Movie
Thread size M3 M4 M5 M6
Minimum thickness 1.0mm
Material Steel
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Press nut's hexagonal section provides high torque & anti-pull out resistance
SG Nuts

Attach nuts from M8-M12 with pressure. Nut's hexagonal is pressed into workpieces and the metal sinks into the nut's groove. Gives both high torque and high anti-pull out strength.Cross section of SG Nuts Can be put into both the surfaces and backsides of pre-pierced workpieces.

SG Nuts Pressing Process Movie
Thread size M8 M10 M12
Minimum thickness 2.3mm
Material Steel
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Spacers can be pressed from the surface
POP Spacers

Spacers for attaching to metal pieces from the surface as a spacer for printed circuit boards. Because of POP's original shape, high strength can be obtained.

Thread size M3 M4 M5
Height
(mm)
3.0 3.5 4.0 5.0 6.0 7.0 8.0 9.0 10.0
Minimum
thickness
1.0mm~2.3mm
Material Steel
Cross section of POP Spacer
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Provide high anti-pull out resistance because they are inserted from the back
Through Spacers

Have high anti-pull resistance because they are attached to metal workpieces from the backside with flange part. Spacer height is from 4.0mm to 12.0mm by 1.0mm and 14.0mm is also available.

Thread size M3
Minimum thickness 1.0mm
Material Steel
Cross section of Through Spacer
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Fully embeds in both surface or backside of the workpiece
Flat Nuts

Can be fully embedded in the back or side of workpiece, so it is suitable for products in which space is limited. Because the nut's hexagonal section is pressed into the workpiece and the metal sinks into the nut groove, high torque and anti-pull out resistance are possible.

Cross section of Flat Nut

Thread size M3 M4
Minimum thickness 1.5mm
Material Steel
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As a rubber blind nut, it provides anti-vibration & isolating conductivity
Well Nuts

Well Nuts are rubber blind nuts which can be fastened unilaterally with anti-vibration, isolating conductivity and seal effect. They can easily be unilaterally installed with a screwdriver. They are especially effective for noise reduction of the fan unit because of their vibration reduction effect.

Thread size M3 M4 M5 M6 M8
Minimum
thickness
0.4mm~29.0mm
Material Body/Chloroprene
EPDM Nut/Bronze
Cross section of Well Nuts
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Fix nuts to a wide range of pieces unilaterally
Jack Nuts

Jack Nuts can be installed into not only metal pieces, but also fragile pieces made of plastic and glass since 3-4 legs of Jack Nuts open according to the shape to securely hold the workpieces when fastening. The grip range of Jack Nuts is wider compared to POP Nuts.

Thread size M3 M4 M5 M6
Minimum
thickness
0.4mm~9.5mm
Material Steel
Cross section of Jack Nuts
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For reinforcing and repairing damaged screw threads
Heli-Coil

Heli-Coil is the screw thread insert, an elastic type of spring coil. When inserted into the tap hole of the workpiece,Heli-Coil screw threads are reinforced and strengthened.

Thread size M2.2 M2.5 M3 M3.5 M4 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39
Material Stainless steel
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