Special Screws

Select a product from category

Vented Screws, Vacuum Screws

Screws have gas ventilation holes for vacuum drawing of machines and have excellent corrosion resistance under vacuum environments.

Screws compatible with clean environments

Screws with cleanroom washing/cleanroom packing provided are available, along with screws compatible with clean environments such as those with ventilation holes.

Low Profile Screws, Small Head Screws

Compact head screws. Suitable for reducing the size of applications.

High Performance Stainless Steel Screws

High performance stainless steel screws have excellent strength, heat resistance, and corrosion resistance compared to standard stainless steel screws.

Titanium Screws

Screws made of titanium. They are lightweight, nonmagnetic, and chemically resistant.

Special Material Screws

Screws made of special materials such as Inconel, Molybdenum and Hastelloy to provide excellent heat, chemical, corrosion resistance.

Tools

A tool series dedicated for special applications.

Screws with Special Surface Treatment

Screws with surface treatment for seizing prevention and reflection resistance.

Micro Screws

Small-diameter screws lower than M2.6 size for precision instruments.

Captive Screws, Full Thread Screws

Screws for falling-out preventation and screws with full thread.

Functional Screws

Screws for fixing and locating clamping screws and ball plungers.

UNC Screws, UNF Screws

Screws for equipment and facilities that use inch-screw specifications.

Security screws, Tamper Resistant Screws

Screws which cannot be installed or removed easily with standard tools to prevent theft and tampering.

Hexalobular Screws

Screws with strength socket heads. For repeating installations and removals.

Plugs

Screw plugs for hydraulic and pneumatic machinery and equipment. Washers for loosening prevention.

Washers, Insert

Washers and inserts are available with a wide variety of outside diameters and thicknesses.

Plastic Screws

Various types of plastic screws made from materials such as VESPEL®, PEEK, and PTFE (Polytetrafluoroethylene).

Vibration Resistance

These screw components are highly effective for prevention of screw loosening due to vibration etc.

Screw Caps / Screw Covers

Protective caps for screw heads and tips.

Chemical Resistance Screws

Screws with special materials, surface treatments, and shapes for applications that require chemical resistance.

Socket Head Cap Screws

We have Socket Head Cap Screws with various kind of materials, surface treatments and characteristics.

Hex Head Screws

We have Hex Head Screws with various kind of materials, surface treatments and characteristics.

Sheet Metal Fasteners

Available to fix thin plate thickness over 0.1mm

SEMS Screws, Improved Fastening Efficiency Screws

Screws that do not require washers. This eliminates the need to incorporate washers and contributes to improved work efficiency.

Select a product from application

Purposes of use

Vacuum

Low Outgas

Clean

Chemical Resistance

High Strength

High Specific Strength

Heat Resistance

Anti-Galling (Anti-Seize)

Screw Drive Damage Prevention

Reflection Resistance

Electrical Insulation

Non-Magnetic

Lightweight

Compact

Increased Productivity

Loss Prevention

Vibration Resistance

Decoration

Fixing・Locating

Conveyance

Selection Conditions

Material 1Plastic
Material 2PTFE (Polytetrafluoroethylene)

Image
Part Name	Cover Caps - PTFE	Plastic Screw - Hex Head Screws - PTFE	Plastic Screw - Hex Nuts / Washers - PTFE	Plastic Screw - Hex Nuts / Washers - PTFE
Part Number	SCAP-PT	SPT-H	SPT-N	SPT-W
Feature	Chemical Resistance	Chemical Resistance Heat Resistance Electrical Insulation	Chemical Resistance Heat Resistance Electrical Insulation	Chemical Resistance Heat Resistance Electrical Insulation
Material	PTFE (Polytetrafluoroethylene)	PTFE (Polytetrafluoroethylene)	PTFE (Polytetrafluoroethylene)	PTFE (Polytetrafluoroethylene)
Surface Treatment	-	-	-	-
Thread Size	M5 ～ M16	M3 ～ M12	M3 ～ M12	M3 ～ M12
CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications
List	SCAP-10-PT SCAP-3-PT SCAP-4-PT SCAP-5-PT SCAP-6-PT SCAP-8-PT	SPT-M10-H SPT-M12-H SPT-M3-H SPT-M4-H SPT-M5-H SPT-M6-H SPT-M8-H	SPT-M10-N SPT-M12-N SPT-M3-N SPT-M4-N SPT-M5-N SPT-M6-N SPT-M8-N	SPT-10-W SPT-12-W SPT-3-W SPT-4-W SPT-5-W SPT-6-W SPT-8-W

Latest

Galling and Seizing

This is a phenomenon that occurs while tightening, where the surface of the screw thread melts or welds due to frictional heat and the screw stops moving. To resolve galling, NBK's special surface treatment screws, such as those with fluorine coating, are recommended.

What are Hex Nuts?

Here we offer a clear introduction to hex nuts.

What makes our custom screws special

The machine parts manufacturer Nabeya Bi-tech Kaisha (NBK) at e-nedzi.com manufactures special screws to the customer's specifications, such as tip machining and surface treatment. Special material screws, resin screws and loosening prevention are also available.

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

Have you ever been surprised by rust suddenly appearing on rust-resistant aluminum?
If this happens, the reduced strength resulting from the corrosion brings fears of possible damage.
This phenomenon is known as "galvanic corrosion". Today, I will explain this principle and how it can be handled.

Helpful Resources

What is a Coupling? Explanation of Types and Features

What are Hex Nuts?

No. 8: Preventing Part Fall-out

What are Captive Screws? Introduction of the NBK Captive Series

What is a Linear Guide Stopper? Introduction to Types and Features!

Customization

Flexus【Muilti-Functional Machined Slotted Springs】

Designs and Examples of What NBK Can Create

Ball Rollers : Characteristics

Custom made

Couplings Bore and Keyway Additional Modification Service

Captive Processing Service

Cleanroom Wash / Cleanroom Packing Service

Screw Length Adjustment Service

Screw combination service

Galling and Seizing

What makes our custom screws special

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

Fastening Screws in Areas with Cumulative Pitch Misalignment of Large Panels

Select the best screws for your needs

Plastic Screw Property

Chemical Resistance of Chemical-proof Screws

Property of Special Material Screws

Titanium Property

Screw Standards and Technical Information

Auto-Positioning Units Frequently Asked Questions (FAQ)

Coupling and Single-axis Actuator Assembly Method

Hints for correctly using NBK products: Quick Positioning Brackets

Hints for correctly using NBK products: Captive Washer for Pull

Hints for correctly using NBK products: Metal Super Knob

Choosing the most suitable coupling

Choosing the most suitable coupling

Procedure of Selection (Actuator)

Procedure of Selection

Procedure of Selection

What is a Coupling? Explanation of Types and Features

Galling and Seizing

Fastening Screws in Areas with Cumulative Pitch Misalignment of Large Panels

No. 8: Preventing Part Fall-out

What are Captive Screws? Introduction of the NBK Captive Series

What are Hex Nuts?

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

What are Captive Screws? Introduction of the NBK Captive Series

What are Washer-Integrated Screws (SEMS Screws)?An Explanation of Standards and Features

Magnetic shield (permalloy shield) must be fixed

Preventing gaps between the sheet and screw when fastening thin sheets

What is Specific Strength? A new index for weight reduction of equipment 【Smaller and Lighter】

Screws must be protected from chemicals 【Energy-saving / reduced work-hours】

Higher torque and Lower price.

NBK SPECIAL SCREWS

What is a Coupling? Explanation of Types and Features

Vol.6 Varieties of Screws "Beyond" SUS

Solving common issues with Semiconductor Manufacturing Equipment（Pre-Process）

High-Gain Rubber Type Coupling XG2

A new generation of disk couplings

Vol.6 Varieties of Screws "Beyond" SUS

No. ９: Increasing Throughput

Micro Screws: M0.6 (S0.6) to M2.6 Lineup

Solving common issues with Semiconductor Manufacturing Equipment（Pre-Process）

What are clamp levers? Here we explain the characteristics and usage methods that help streamline screw tightening!

What makes our custom screws special

Customization

NBK SPECIAL SCREWS

Flexus【Muilti-Functional Machined Slotted Springs】

Designs and Examples of What NBK Can Create

Solving common issues with Semiconductor Manufacturing Equipment（Pre-Process）

What is Specific Strength? A new index for weight reduction of equipment 【Smaller and Lighter】

No. 6: Thermal Cycling

Higher torque and Lower price.

A new generation of disk couplings

What is a Coupling? Explanation of Types and Features

Galling and Seizing

What are Hex Nuts?

What makes our custom screws special

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

What is a Coupling? Explanation of Types and Features

Galling and Seizing

What are Hex Nuts?

What makes our custom screws special

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

Vol.6　Varieties of Screws "Beyond" SUS

Vol.6　Varieties of Screws "Beyond" SUS

Vol.6　Varieties of Screws "Beyond" SUS