Special Screws

Select a product from category

Vacuum Application 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 S.S. 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.

Miniature 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.

Inch Screws

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

Tamper Resistant Screws

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

Hexalobular Socket Head 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.

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.

Screws for fixing thin plate

Available to fix thin plate thickness over 0.1mm

Screws with Captive Washers・Screws for Improved Fastening Operation

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

Heat Resistance

Anti-Galling (Anti-Seize)

Screw Drive Damage Prevention

Reflection Resistance

Electrical Insulation

Non-Magnetic

Lightweight

Space optimization

Simplified Work

Loss Prevention

Vibration Resistance

Decoration

Fixing・Locating

Conveyance

Selection Conditions

Material 1Plastic
Material 2VESPEL® SCP-5000,VESPEL® SP-1

Image
Part Name	Plastic Screw - Socket Head Cap Screws - VESPEL（Grade：SP-1）	Plastic Screw - Socket Head Cap Screws - VESPEL（Grade：SCP-5000）	Plastic Screw - Hex Head Screws - VESPEL（Grade：SP-1）	Plastic Screw - Hex Head Screws - VESPEL（Grade：SCP-5000）
Part Number	SPD-C	SPDC-C	SPD-H	SPDC-H
Feature	Heat Resistance Chemical Resistance Low Outgas	Heat Resistance Chemical Resistance Low Outgas	Heat Resistance Chemical Resistance Low Outgas	Heat Resistance Chemical Resistance Low Outgas
Material	VESPEL® SP-1	VESPEL® SCP-5000	VESPEL® SP-1	VESPEL® SCP-5000
Surface Treatment	-	-	-	-
Thread Size	M3	M3	M3	M3
CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications
List	SPD-M3-C SPD-M4-C SPD-M5-C SPD-M6-C SPD-M8-C	SPDC-M3-C SPDC-M4-C SPDC-M5-C SPDC-M6-C SPDC-M8-C	SPD-M3-H SPD-M4-H SPD-M5-H SPD-M6-H SPD-M8-H	SPDC-M3-H SPDC-M4-H SPDC-M5-H SPDC-M6-H SPDC-M8-H

Latest

Captive Processing Service

For customers who want to prevent screws from falling off

We can add relief-cut treatment to screws to prevent them from falling off.

Cleanroom Wash / Cleanroom Packing Service

For customers who want to remove impurities and dust from the surface of products

We will cleanroom wash and cleanroom pack products as desired.

Screw Length Adjustment Service

For customers who require screws of non-standard lengths

We can cut screws to your preferred length in 1 mm increments.

Screw combination service

For customers who want to change the threaded portion of a lever or knob

Have your chosen screw delivered attached to a lever/knob female screw product!

Helpful Resources

About Couplings

Couplings Bore and Keyway Additional Modification Service

Captive Processing Service

Cleanroom Wash / Cleanroom Packing Service

Screw Length Adjustment Service

Flexus【Muilti-Functional Machined Slotted Springs】

Designs and Examples of What NBK Can Create

Ball Rollers : Characteristics

Custom made

Special specifications

Couplings Bore and Keyway Additional Modification Service

Captive Processing Service

Cleanroom Wash / Cleanroom Packing Service

Screw Length Adjustment Service

Screw combination service

Solving common issues with Food Machinery（Food Packaging Machine）

CE-marked components which prevent foreign matter contamination are required 【Safety / precautionary measures】

Select the best screws for your needs

No. 7: SEMI Standards

No. 6: Thermal Cycling

Property of Special Material Screws

Hexalobular Internal Driving Feature for Bolts and Screws

Plastic Screw Property

The Anti-Vibration Coupling with High Rigidity

Advancements in Servomotor Coupling Technology

Hints for correctly using NBK products: Quick Positioning Brackets

Auto-Positioning Units Frequently Asked Questions (FAQ)

Hints for correctly using NBK products: Retractable revolving grip

Hints for correctly using NBK products: Set Collars

Hints for correctly using NBK products: Captive Series (relief-cut thread)

Choosing the most suitable coupling

Choosing the most suitable coupling

Procedure of Selection (Actuator)

Procedure of Selection

Procedure of Selection

About Couplings

Solving common issues with Food Machinery（Food Packaging Machine）

Use the NBK Captive Screw Series to be comply with CE

No. 8: Preventing Part Fall-out

What are Captive Screws? Introduction of the NBK Captive Series

Solving common issues with Food Machinery（Food Packaging Machine）

CE-marked components which prevent foreign matter contamination are required 【Safety / precautionary measures】

Use the NBK Captive Screw Series to be comply with CE

What are Captive Screws? Introduction of the NBK Captive Series

No. 7: SEMI Standards

Machining marks must be prevented 【Energy-saving / reduced work-hours】

Improvement points for FA Devices【Control Design】

Solving common issues with Machine Tools（Machining Center）

Improvement points for FA Devices【Unit Design】

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

About Couplings

Collaboration Webinar: The Best Solutions for Shortening a Positioning Time by Using NBK's Couplings and SANYO DENKI's Servo Motors

The Optimized Coupling ”XG Family"（Teaser ver.）

Raising/lowering shaft vibration must be suppressed 【Improved Productivity】

Webinar: How can we speed up and reduce the cost of the Motion Control System with Shaft Couplings?

Small Diameter Screws: M0.6 (S0.6) to M2.6 Lineup

What are low profile screws? Find advantages, disadvantages, and usage examples explained here!

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

No. ９: Increasing Throughput

No. 6: Thermal Cycling

Flexus【Muilti-Functional Machined Slotted Springs】

NBK SPECIAL SCREWS

Designs and Examples of What NBK Can Create

Ball Rollers : Characteristics

Custom made

No. 6: Thermal Cycling

No. 5: Solving common problems inside equipment

Collaboration Webinar: The Best Solutions for Shortening a Positioning Time by Using NBK's Couplings and SANYO DENKI's Servo Motors

The Optimized Coupling ”XG Family"（Teaser ver.）

Webinar: How can we speed up and reduce the cost of the Motion Control System with Shaft Couplings?

About Couplings

What are Hex Socket Head Cap Screws (cap bolts)?

CE-marked components which prevent foreign matter contamination are required 【Safety / precautionary measures】

Select the best screws for your needs

All you need to know about the roles and types of washers!

About Couplings

What are Hex Socket Head Cap Screws (cap bolts)?

CE-marked components which prevent foreign matter contamination are required 【Safety / precautionary measures】

Select the best screws for your needs

No. 8: Preventing Part Fall-out

Vol.1　Thinking about "Galling and Seizing"

Vol.2　Explaining the Vocabulary of Screws

Vol.3　Functional Screw Surface Treatments Are Not Just for Corrosion Resistance

Vol.4　What are washers used for?

Vol.5　Varieties of SUS Screws