Security screws, Tamper Resistant Screws

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

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Part Name	Button Head Cap Screws with Three-Lobe Holes (with Pin)	Hex Socket Flat Head Bolts (with Pin)	Triangular Socket Button Head Cap Screws	Triwing Flat Head Machine Screws	Button Head Cap Screws with Five-Lobe Holes (with Pin)	Theft Prevention Nuts	Tamper Resistant Special Low Profile Cap Screws	Flat Head Screws with Hexalobular Socket and Pin	Flat Head Bolts with Hexalobular Socket (with Pin) Rosette Washer Set
Part Number	SRSAS	SRHFS	SRTRS	SRWFS	SRGS	SHNRS	SRSHS	SRFXS	SRFXS-SET
Feature	Three-Lobe Holes (with Pin)	Hex Socket With Pin	Triangular Socket	Triwing	Five-Lobe Holes (with Pin)	Anti-theft Nut	Tamper-resistant screw with special low Profile height	Hexalobular Socket with Pin	Hexalobular Socket with Pin
Material	Equivalent to SUS304	Equivalent to SUS304	Equivalent to SUS304	Equivalent to SUS304	-	-	SUSXM7 (Equivalent to SUS304)	Equivalent to SUS304	Equivalent to SUS304
Surface Treatment	-	-	-	-	-	-	-	-	-
Thread Size	M3 ～ M8	M3 ～ M10	M3 ～ M6	M2 ～ M8	M3 ～ M8	M6 ～ M16	M2 ～ M4	M3 ～ M6	M3 ～ M6
Operating Temperature (℃)	-	-	-	-	-	-	-	-	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SRSAS-M3 SRSAS-M4 SRSAS-M5 SRSAS-M6 SRSAS-M8	SRHFS-M10 SRHFS-M3 SRHFS-M4 SRHFS-M5 SRHFS-M6 SRHFS-M8	SRTRS-M3 SRTRS-M4 SRTRS-M5 SRTRS-M6	SRWFS-M2 SRWFS-M3 SRWFS-M4 SRWFS-M5 SRWFS-M6 SRWFS-M8	SRGS-M3 SRGS-M4 SRGS-M5 SRGS-M6 SRGS-M8	SHNRS-M10 SHNRS-M10-P1.25 SHNRS-M12 SHNRS-M16 SHNRS-M6 SHNRS-M8	SRSHS-M2 SRSHS-M2.5 SRSHS-M3 SRSHS-M4	SRFXS-M3 SRFXS-M4 SRFXS-M5 SRFXS-M6	SRFXS-M3-SET SRFXS-M4-SET SRFXS-M5-SET SRFXS-M6-SET

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Part Name	Button Head Cap Screws with Hexalobular Socket and Pin	Captive Button Head Cap Bolts with Hexalobular Socket (with Pin)	Socket Head Cap Screws with Hexalobular Socket and Pin	One Side Pan Head Machine Screws	Two Hole Pan Head Machine Screws	Triwing Pan Head Machine Screws	Hexalobular Socket Head Cap Bits (with Pin) for Tamper Resistant Screws	Hex Socket Head Cap Bits (with Pin) for Tamper Resistant Screws	Three-Lobe Socket Bits (with Pin) for Tamper Resistant Screws
Part Number	SRBS	SSC-SRBS	SRHS	SROS	SRTS	SRWS	SRXB	SRHB	SRSAB
Feature	Hexalobular Socket with Pin	Hexalobular Socket With Pin Captive/Loss Prevention	Hex Socket with Pin	Tightened withPhillips Screwdriver	2 Holes	Triwing Socket	Dedicated Bits for SRBS SRFXS SSC-SRBS	Dedicated Bits for SRHS SRHFS	Dedicated Bits for SRSAS
Material	Equivalent to SUS304	Equivalent to SUS304	Equivalent to SUS304	Equivalent to SUS304	Equivalent to SUS304	Equivalent to SUS304	Steel	Steel	-
Surface Treatment	-	-	-	-	-	-	-	-	-
Thread Size	M3 ～ M8	M3 ～ M8	M3 ～ M6	M3 ～ M5	M3 ～ M5	M3 ～ M5	-	-	-
Operating Temperature (℃)	-	-	-	-	-	-	-	-	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SRBS-M3 SRBS-M4 SRBS-M5 SRBS-M6 SRBS-M8	SSC-SRBS-M3 SSC-SRBS-M4 SSC-SRBS-M5 SSC-SRBS-M6 SSC-SRBS-M8	SRHS-M3 SRHS-M4 SRHS-M5 SRHS-M6	SROS-M3 SROS-M4 SROS-M5	SRTS-M3 SRTS-M4 SRTS-M5	SRWS-M3 SRWS-M4 SRWS-M5	SRXB-10 SRXB-20 SRXB-25 SRXB-30 SRXB-40	SRHB-2 SRHB-2.5 SRHB-3 SRHB-4 SRHB-5 SRHB-6	SRSAB-3 SRSAB-4 SRSAB-56 SRSAB-8

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Part Name	Five-Lobe Socket Bits (with Pin) for Tamper Resistant Screws	Triangle Socket Bits for Tamper Resistant Screws	Sockets for Theft Prevention Nuts	Bits for Tamper Resistant Special Low Profile Cap Screws	Hexalobular Socket Wrench (with Pin) for Tamper Resistant Screws	Hex Socket Wrench (with Pin) for Tamper Resistant Screws	One Side Screwdriver for Tamper Resistant Screws	Magnetic Screwdrivers	Two Hole Bits for Tamper Resistant Screws
Part Number	SRGB	SRTRB	SKW	SRSHB	SRX	SRH	SROT	SRD	SRTB
Feature	Dedicated Bits for SRGS	SRTRS Dedicated Bits	Dedicated Tools for SHNRS	SRSHS Dedicated Bits	Special Keys for SRBS	Special Keys for SRHS SRHFS	Special Screwdriver for SROS	Magnetic Screwdrivers	Special Bits for SRTS
Material	-	-	-	-	-	-	-	-	-
Surface Treatment	-	-	-	-	-	-	-	-	-
Thread Size	-	-	-	-	-	-	-	-	-
Operating Temperature (℃)	-	-	-	-	-	-	-	-	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SRGB-3 SRGB-4 SRGB-56 SRGB-8	SRTRB-3 SRTRB-4 SRTRB-5 SRTRB-6	SKW-10 SKW-12 SKW-16 SKW-6 SKW-8	SRSHB-0 SRSHB-1 SRSHB-2 SRSHB-3	SRX-10 SRX-20 SRX-25 SRX-30 SRX-40	SRH-2 SRH-2.5 SRH-3 SRH-4 SRH-5 SRH-6	SROT-410 SROT-510	SRD-6.35	SRTB-10 SRTB-4 SRTB-8

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Part Name	Tri-wing Bits for Tamper Resistant Screws
Part Number	SRWB
Feature	Special Bits for SRWS SRWFS
Material	-
Surface Treatment	-
Thread Size	-
Operating Temperature (℃)	-
CAD	CAD
Specifications	Specifications
List	SRWB-1 SRWB-2 SRWB-4 SRWB-5 SRWB-6 SRWB-7

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.

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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

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Screw combination service

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No. 8: Preventing Part Fall-out

What are Captive Screws? Introduction of the NBK Captive Series

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Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

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Magnetic shield (permalloy shield) must be fixed

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Higher torque and Lower price.

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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）

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Higher torque and Lower price.

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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