Tap pin exclusive for plastic Non-Sert | Self-tapping screws | Saima Corporation

4th Generation
Thread forming Tapping Screw for thermoplastic!!

Self-Tapping Screws for Plastic "Non-Sert" Products

Nonsert Steel 3Cr. Plating thickness 5μm guarantee.

ISO Cross Recess Pan Head Non-Sert
Steel 3Cr

Cross Recess Flat Head Non-Sert
Steel 3Cr

#0 Cross Recess Pan Head Non-Sert
Steel Black Ni

JIS Cross Recess pan Head Non-Sert
Steel 3Cr

JIS Cross Recess Pan Head Non-Sert
Stainless A2

Cross Recess Washer Head Non-Sert
Steel 3Cr

Cross Recess Binding Head Non-Sert
Steel 3Cr

QuaStix Non-Sert
Steel 3Cr

310Slim Non-Sert
Steel 3Cr

310Slim Non-Sert
Steel 3Cr Black

Cross recess pan head self tapping screw for SANYO DENKI FAN
Steel 3Cr

Cross recess 120°flat head sef tapping screw for SANYO DENKI FAN
Steel 3Cr

Please do not hesitate to contact us

No Need Metal Insert

Possible to reduce the cost without metal insert.
No need countersinking process & expense for the metal insert.

non-sert will help you save total cost and time

Non-Sert no insert | Self Tapping Screws for Plastic | Saima Corporation

Sharp thread angle “30°”

Less stress and cracking on your plastic product.

Non-Sert Thread Angle 30° | Self Tapping Screws for Plastic | Saima Corporation

Best for repeat use

Trilobular thread = Low driving torque = less stress on the plastic.

non-sert can be used repeatedly on the same pilot hole

Non-Sert Thread shape | Self Tapping Screws for Plastic | Saima Corporation

Low driving torque[TD] & High failure torque[TF]

Ttrilobular thread & sharp thread angle "30°" achieve low TD & high TF.

Non-Sert Thread shape | Self Tapping Screws for Plastic | Saima Corporation

Pilot hole dia. & Torque of setting

Torque Analyzer will...

Find the best hole dia
Find the best setting torque

Please feel to ask us if you're annoyed with cracking & idling

Torque Analayzer | Self Tapping Screws for Plastic | Saima Corporation

"Non-Sert" Hole size (Self-Tapping Screws for Plastic)

Non-Sert is thread forming tapping screw to plastic material directly.
This thread structure is difficult to idling, and repeatable use

※This table is as only reference.

Material		hole size (d Size x)
ABS		0.80
PA6/6.6		0.75
PC		0.85
PE		0.70 - 0.75
PET		0.75
PMMA		0.85
POM		0.75
PP		0.70
PPO		0.80
PS		0.80
FRP	PET 30%	0.80
	PA6 30%	0.82
	PA6.6 30%	0.85
	PC 30%	0.80

※The best condition of hole diameter varies depending on the material and shape, so We recommend using a PC torque analyzer to measure the optimum hole diameter.

NonSert Application Situation

No Metal Insert Required. Cost Reduction.
Easy to recycle without metal insert.
Cracking is not expected
Plastic Crack happen place
Repeatable application
Low torque driving, low stress for Self Tapping Screws Plastic

Applications

Non-Sert Example of use1 | Self Tapping Screws for Plastic | Saima Corporation

Non-Sert Example of use2 | Self Tapping Screws for Plastic | Saima Corporation

HOCHIKI Corporation
Gas alarm

By adopting nonsert, it can be used as it is for plastic and it becomes possible to use it repeatedly for maintenance

Non-Sert Example of use5 | Self Tapping Screws for Plastic | Saima Corporation

LAWSON Inc.

Microphone Capsule
M1.6x4.0 Nonsert tighten strictly for microphone parts.

Non-Sert Example of use4 | Self Tapping Screws for Plastic | Saima Corporation

Welco Corporation
High performance small tube pump

Adopted nonsert for fastening of motor part and tube part housing

Plasma TV stand

By adopting nonsert, costs are reduced without requiring inserts

Non-Sert Example of use3 | Self Tapping Screws for Plastic | Saima Corporation

Trolley for pachinko parlor

Even with heavy pachinko balls it is hard to loosen
Nonsert is also strong for loose

SANYO DENKI CO., Ltd
Recommended screw for fan

SY-Non-Sert for SANYO DENKI FAN '' SAN ACE ''

This is special Non-Sert with development together.
"120° Flat Head type and Small Pan Head type Nonsert"
These SY-Non-Serts are is recommended
by the SANYO DENKI CO., Ltd Technical date as below.

Pan Head SY-Non-Sert | Self Tapping Screws for Plastic | Saima Corporation

Flat Head SY-Non-Sert | Self Tapping Screws for Plastic | Saima Corporation

4thGeneration Thread Forming

plastic, Plastic and Engineering Plastic Fastening Plastic counterpart is much weaker than Steel Screw.
Therefore, to prevent the plastic breaking or cracking, SAIMA is stronly recommended to use “specialized screw for plastic”.

1st Generation: JIS B 1122 type 2 (Self Tapping Screws for Plastic)

Suitable for thin plate and plastic fastening as stated in JIS B1122 appendix.
Widely distributed as a standard screw. Average Performance.

2nd Generation: B-type (Self Tapping Screws for Plastic)

Advanced form of JIS B 1122 Class 2, with trilobular thread, same thread angle (60 degree) and pitch.
Tightening Torque is lower than 1st generation according to torque analysis result.
Suitable for thin plate and plastic fastening.

3rd Generation : P-type (Self Tapping Screws for Plastic)

Double threaded with 45° thread angle, wider thread compared with B-type and trilobular thread.
Double started thread makes the fastening speed twice high, but loosens faster once the screw starts loosening.
This makes TF point and TD point higher, so we havet to pay attention F/D ratio.
This is not suitable for repeated application on the same pilot hole.
TD: Torque of Driving
Min. Torque for fatening

TF: Torque of Failure
Torque for breaking counter material. it includes idling and crack

TS: Torque of Setting
Best Torque of Setting

4th Generation : Non-Sert (Self Tapping Screws for Plastic)

Single threaded same as 1st and 2nd Generation with 30 degree thread angle, trilobular thread shape and large pitch. Lowest TD(Torque of Driving) in all generations. Low stress against the plastic part. TF(Torque of Failure) is lower than 3rd Generation, but mostly T/F ratio indicate higher, these results conclude that using Non-Sert is safe and best Self Tapping Screws for Self Tapping Screws for Plastic fastening. In addition that Best for repeat use on the same hole.

Catalog of Self Tapping Screw "Non-Sert"