Screw Caps / Screw Covers

Protective caps designed for bolt heads and tips.
They help enhance the safety of equipment and devices while providing effective dust protection.
To explore protective caps that help prevent bolt head corrosion when used with dedicated bolts, click here.

Image
Part Name	Protective Cap for Hex Socket	Screw Caps, Cap Head Protectors	Screw Caps, Hex Head Protectors	Screw Caps, Hex Head Protectors	Screw Caps, Cap Head Protectors	Screw Caps, Thread Protectors	Screw Caps, Bolt & Nut Protectors
Part Number	SRRIP	SCC	SCH	SCHCL	SCHT-H	SCHT-T	SCBN
Feature	For Hex Socket Head Cap Screws Tamper Resistance	For socket head cap screws	For Hex Head Bolt Heads and Hex Nuts	For Hex Head Bolt Heads	For Hex Socket Head Cap Screw Heads	For Screw Tips	For Screws and Hex Nuts
Material	-	Polyethylene	Polyethylene	PVC (Polyvinyl Chloride)	PVC (Polyvinyl Chloride)	PVC (Polyvinyl Chloride)	PVC (Polyvinyl Chloride)
Surface Treatment	-	-	-	-	-	-	-
Thread Size	-	M5 ～ M20	M5 ～ M16	-	-	-	-
Operating Temperature (℃)	-	-	-	-	-	-	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SRRIP-10 SRRIP-14 SRRIP-4 SRRIP-5 SRRIP-6 SRRIP-8	SCC-10 SCC-14 SCC-17 SCC-4 SCC-5 SCC-6 SCC-8	SCH-10 SCH-12 SCH-16 SCH-5 SCH-6 SCH-8	SCHCL-10 SCHCL-12 SCHCL-16 SCHCL-20 SCHCL-24 SCHCL-3 SCHCL-4 SCHCL-5 SCHCL-6 SCHCL-8	SCHT-10H SCHT-12H SCHT-16H SCHT-20H SCHT-24H SCHT-3H SCHT-4H SCHT-5H SCHT-6H SCHT-8H	SCHT-10T SCHT-12T SCHT-16T SCHT-20T SCHT-24T SCHT-3T SCHT-4T SCHT-5T SCHT-6T SCHT-8T	SCBN-10 SCBN-12 SCBN-16 SCBN-20 SCBN-6 SCBN-8

Latest

No. 2: Vacuum environments

Vacuum technology is often used in semiconductor manufacturing equipment. A vacuum is not required for all equipment. A vacuum would mainly be required for equipment that uses plasma or an electron beam. In Part 2, we introduce some NBK products that are ideal for use in these vacuum environments!

Description of Tamper Resistant Screws for the Engineers

This is the page on tamper-resistant screws in "Description of Special Screws for Designers." We introduce here what tamper-resistant screws are, the advantages of their use, various usage examples, and their types and characteristics.

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.

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

NBK offers a wide-ranging lineup of small-diameter screws in various shapes and materials.
Various head diameters and heights are available for the same screw diameters, contributing to saving space.

Helpful Resources

Search by purpose

Product Introduction Customization Services & Product Options Issue/case studies Technical Data Usage Selection Method Installation Method/Maintenance Safety Precautions Glossary

Search by keyword

Improved productivity/workability Safety measures/precautionary measures Reduced cost/energy saving/long life Vibration prevention/high precision Compact/space-saving/lightweight Customization High strength/high rigidity Heat resistance/corrosion resistance Elegant functionality/design Cleanroom/vacuum/non-magnetic Seizing Prevention Automation/robots/motorization Others

Search by industry

Machine Tools Semiconductor Manufacturing Equipment Food Machinery Automotive Manufacturing Process Medical equipment FA Devices

Search by series

The Semiconductor Industry and NBK Video Library Hints for correctly using NBK products Solution samples What is a Screw?Description of Mechanical Components for Engineers Description of Special Screws for Engineers 3 Min Engineering Tips Services & Product Options Technical Data

Search by product category

Couplings Special Screws Machine Elements FA solutions

Click here to see Special Screws

Vented Screws / Vacuum Screws

Screws compatible with clean environments

Low Profile Screws / Small Head Screws

High Performance Stainless Steel Screws

Titanium Screws

Special Material Screws

Tools

Screws with Special Surface Treatment

Micro Screws

Captive Screws / Full Thread Screws

Quick Release Fasteners

Functional Screws

UNC Screws / UNF Screws

Security screws / Tamper Resistant Screws

Hexalobular Screws

Plugs

Washers / Inserts

Plastic Screws

Vibration Resistance

Chemical Resistance Screws

Socket Head Cap Screws

Hex Head Screws

Sheet Metal Fasteners

Vacuum

Low Outgassing

Cleanroom

Chemical Resistance

High Strength

High Specific Strength

Heat Resistance

Galling & Seizing Prevention

Prevention of Screw Drive Damage

Anti-Reflective

Electrical Insulation

Non-Magnetic

Lightweight

Compact and Space-Saving

Increased Productivity

Captive

Loosening Prevention

Decoration

Fixing and Positioning

Conveyance

SEMS Screws / Improved Fastening Efficiency Screws

Contact Us