Chemical Resistance
Order Online - Exclusive to U.S., Canada & Mexico
-Skip the quote process: Purchase products directly from our online shop with real-time pricing.
-Local Delivery from Philadelphia: Shipped via UPS and FedEx from our Philadelphia warehouse.
-Streamlined Procurement: Most orders are dispatched from Philadelphia within one week.
-Many special screw specifications that typically require custom manufacturing elsewhere are available as standard items from NBK.
These screws are suitable for use in corrosive environments that use wafer cleaning solutions and process gases.
Special materials and coatings prevent chemical corrosion and dissolution.
Preventing corrosion reduces maintenance and equipment damage.
＊1 ：INCONEL is a registered trademark of Special Metals Corporation.
＊2 ：MONEL is a registered trademark of Special Metals Corporation.
＊3 ：Hastelloy is a registered trademark of Haynes International, Inc.
＊4 ：MAT21 is a registered trademark of Proterial, Ltd.
＊5 ：RENYTM is a trademark of GLOBAL POLYACETAL CO., LTD.
＊6 ：VESPEL is a registered trademark of DuPont.
| Image |  |
 |
 |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|---|
| Part Name | Socket Head Cap Screws with Small Head - Titanium | Socket Head Cap Screws with Ultra Low Small Head - Titanium | Socket Head Cap Screws with Ultra Low Small Head - Titanium | Titanium Hex Socket Head Cap Screws with Captive Washers | Titanium Hex Socket Head Cap Screws with Captive Washers | Titanium Hex Socket Head Cap Screws with Captive Washers | Titanium Hex Socket Head Cap Screws with Captive Washers | Cross Recessed Pan Head Machine Screws - Titanium | Cross Recessed Pan Head Machine Screws - High Intensity Titanium Alloy |
| Part Number | SNST-SD-UT | SSHT-SD | SSHT-SD-UT | SNSI1T | SNSI1T-UT | SNSI3T | SNSI3T-UT | SNPT | SNPTG |
| Feature | Small Head Lightweight Non-magnetic Chemical Resistance |
Special Low Profile Space-saving Lightweight Non-magnetic Chemical Resistance Small Head |
Special Low Profile Space-saving Lightweight Non-magnetic Chemical Resistance Small Head |
Captive Washers I=1 |
Captive Washers I=1 |
Captive Washers I=3 |
Captive Washers I=3 |
Lightweight Nonmagnetic Chemical Resistance |
High Strength Lightweight Nonmagnetic Corrosion Resistance |
| Price | From 10.31 USD | From 21.44 USD | From 11.85 USD | From 6.23 USD | From 34.16 USD | From 6.96 USD | From 38.20 USD | From 2.08 USD | From 3.04 USD |
| Material | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | β Titanium |
| Surface Treatment | - | Special Chemical Polishing | - | Special Chemical Polishing | - | Special Chemical Polishing | - | Special Chemical Polishing | Special Chemical Polishing |
| Thread Size | M3 ～ M6 | M3 ～ M6 | M3 ～ M6 | M3 ～ M6 | M3 ～ M6 | M3 ～ M6 | M3 ～ M6 | M2 ～ 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 | SNST-M3-SD-UT SNST-M4-SD-UT SNST-M5-SD-UT SNST-M6-SD-UT | SSHT-M3-SD SSHT-M4-SD SSHT-M5-SD SSHT-M6-SD | SSHT-M3-SD-UT SSHT-M4-SD-UT SSHT-M5-SD-UT SSHT-M6-SD-UT | SNSI1T-M3 SNSI1T-M4 SNSI1T-M5 SNSI1T-M6 | SNSI1T-M3-UT SNSI1T-M4-UT SNSI1T-M5-UT SNSI1T-M6-UT | SNSI3T-M3 SNSI3T-M4 SNSI3T-M5 SNSI3T-M6 | SNSI3T-M3-UT SNSI3T-M4-UT SNSI3T-M5-UT SNSI3T-M6-UT | SNPT-M2 SNPT-M2.5 SNPT-M3 SNPT-M4 SNPT-M5 | SNPTG-M3 SNPTG-M4 SNPTG-M5 |
| Image |  |
 |
 |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|---|
| Part Name | Titanium Pan Head Machine Screws for Precision Instruments (Miniature Screws) | Cross Recessed Flat Head Machine Screws - Titanium | Cross Recessed Flat Head Machine Screws - High Intensity Titanium Alloy | Hex Nuts / Hex Flange Nuts - Titanium | Hex Nuts / Hex Flange Nuts - Titanium | Hex Lock Nuts - Titanium | Washers - Titanium | Washers - Titanium | Socket Head Cap Captive Screws - Titanium |
| Part Number | SNZT | SNFT | SNFTG | SHNT | SHNT-F | SWUT | SWAT-F | SWAT-S | SSC-SNST |
| Feature | Lightweight Nonmagnetic Chemical Resistance |
Lightweight Nonmagnetic Chemical Resistance |
High Strength Lightweight Nonmagnetic Corrosion Resistance |
Lightweight Nonmagnetic Chemical Resistance |
Lightweight Nonmagnetic Chemical Resistance With Flange |
Lightweight Nonmagnetic Vibration Resistant |
Lightweight Nonmagnetic Chemical Resistance |
Lightweight Nonmagnetic Chemical Resistance |
Lightweight Non-magnetic Chemical Resistance Captive / Loss Prevention |
| Price | From 27.24 USD | From 2.23 USD | From 2.61 USD | From 3.90 USD | From 4.02 USD | From 7.59 USD | From 1.59 USD | From 1.09 USD | From 12.02 USD |
| Material | Grade 2 Titanium | Grade 2 Titanium | β Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium |
| Surface Treatment | - | Special Chemical Polishing | Special Chemical Polishing | Special Chemical Polishing | Special Chemical Polishing | Special Chemical Polishing | - | - | Special Chemical Polishing |
| Thread Size | M1.6 ～ M2.5 | M3 ～ M4 | M3 ～ M5 | M3 ～ M10 | M3 ～ M10 | M3 ～ M10 | M3 ～ M10 | M3 ～ M10 | 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 | SNZT-M1.6 SNZT-M2 SNZT-M2.5 | SNFT-M3 SNFT-M4 | SNFTG-M3 SNFTG-M4 SNFTG-M5 | SHNT-M10 SHNT-M3 SHNT-M4 SHNT-M5 SHNT-M6 SHNT-M8 | SHNT-M10-F SHNT-M3-F SHNT-M4-F SHNT-M5-F SHNT-M6-F SHNT-M8-F | SWUT-M10 SWUT-M3 SWUT-M4 SWUT-M5 SWUT-M6 SWUT-M8 | SWAT-10-F SWAT-3-F SWAT-4-F SWAT-5-F SWAT-6-F SWAT-8-F | SWAT-10-S SWAT-3-S SWAT-4-S SWAT-5-S SWAT-6-S SWAT-8-S | SSC-SNST-M3 SSC-SNST-M4 SSC-SNST-M5 SSC-SNST-M6 |
| Image |  |
 |
 |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|---|
| Part Name | Socket Head Cap Captive Screws - High Intensity Titanium | Vented Socket Head Cap Screws - Titanium | Vented Socket Head Cap Screws with Ultra Low Profile - Titanium | Vented Socket Head Cap Screws with Small Head - Titanium | Vented Socket Head Cap Screws with Ultra Low Profile & Small Head - Titanium | Socket Head Cap Screw -Inconel equiv. | Inconel Hex Nut | Inconel Washer | Vented Socket Head Cap Screws - Inconel equiv. |
| Part Number | SSC-SNSTG | SVST | SVSHT | SVST-SD | SVSHT-SD | SNSI | SHNI | SWAI-F | SVSI |
| Feature | High Strength Lightweight Non-magnetic Corrosion Resistance Captive / Loss Prevention |
Lightweight Nonmagnetic Chemical Resistance |
Lightweight Sapce-Saving Ultra Low Profile Nonmagnetic Chemical Resistance |
Small Head Lightweight Non-magnetic Chemical Resistance |
Special Low Profile Small Head Space-saving Lightweight Non-magnetic Chemical Resistance |
Chemical Resistance Heat Resistance |
Chemical Resistance Heat Resistance |
Chemical Resistance Heat Resistance |
Chemical Resistance Heat Resistance |
| Price | From 28.81 USD | From 17.88 USD | From 22.62 USD | From 24.70 USD | From 36.71 USD | From 39.20 USD | From 42.99 USD | From 19.74 USD | Request a Quote |
| Material | Grade 5 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | Inconel equiv. | Inconel equiv. | Inconel equiv. | Inconel equiv. |
| Surface Treatment | - | Special Chemical Polishing | Special Chemical Polishing | Special Chemical Polishing | Special Chemical Polishing | - | - | - | - |
| Thread Size | M3 ～ M8 | M3 ～ M5 | M3 ～ M6 | M3 ～ M5 | M3 ～ M6 | M3 ～ M8 | M3 ～ M8 | M3 ～ M8 | M3 ～ M8 |
| Operating Temperature (℃) | - | - | - | - | - | - | - | - | - |
| CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD |
| Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications |
| List | SSC-SNSTG-M3 SSC-SNSTG-M4 SSC-SNSTG-M5 SSC-SNSTG-M6 SSC-SNSTG-M8 | SVST-M3 SVST-M4 SVST-M5 | SVSHT-M3 SVSHT-M4 SVSHT-M5 SVSHT-M6 | SVST-M3-SD SVST-M4-SD SVST-M5-SD | SVSHT-M3-SD SVSHT-M4-SD SVSHT-M5-SD SVSHT-M6-SD | SNSI-M3 SNSI-M4 SNSI-M5 SNSI-M6 SNSI-M8 | SHNI-M3 SHNI-M4 SHNI-M5 SHNI-M6 SHNI-M8 | SWAI-3-F SWAI-4-F SWAI-5-F SWAI-6-F SWAI-8-F | SVSI-M3 SVSI-M4 SVSI-M5 SVSI-M6 SVSI-M8 |
| Image |  |
 |
 |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|---|
| Part Name | Duplex Stainless Steel Hexagon Head Screw | Duplex Stainless Steel Hexagon Nuts | Hex Socket Head Cap Screws (SUS316L) | Hex Socket Head Cap Screws - 316L Stainless Steel ｰ Cleanroom Washed & Packaged | Socket Head Cap Screws - 316L Stainless Steel - Specialized Chemical Polishing | High Strength Stainless Steel Socket Head Cap Screws | Socket Head Cap Screws - High Intensity Stainless Steel | Socket Head Cap Screws - High Intensity Stainless Steel | High Strength Stainless Steel Socket Head Cap Screws - Cleanroom Washed & Packaged |
| Part Number | SNHDS | SHNDS | SNSL | SNSL-UCL | SNSL-PC | SNSLG | SNSX-88 | SNSX-109 | SNSLG-UCL |
| Feature | High Strength CorrosionResistance Magnetic |
High Strength CorrosionResistance Magnetic |
Heat Resistance Corrosion Resistance Nonmagnetic |
Cleanroom Washed & Packaged |
Heat Resistance Corrosion Resistance Non-magnetic Low Outgas |
High Strength (Strength Class 10.8 Equivalent) Heat Resistance Corrosion Resistance Nonmagnetic |
High Strength (Strength Class 8.8) Heat Resistance Corrosion Resistance Non-magnetic |
High Strength (Strength Class 10.9) Heat Resistance Corrosion Resistance Non-magnetic |
High Strength (Strength Class 10.8 Equivalent) Heat Resistance Corrosion Resistance Non-magnetic Cleanroom Washed & Packaged |
| Price | From 35.31 USD | From 8.76 USD | From 5.74 USD | From 12.56 USD | From 9.61 USD | From 7.73 USD | From 2.75 USD | From 6.20 USD | From 17.33 USD |
| Material | - | - | SUS316L | SUS316L | SUS316L | SUS316L | SUS316L HiMo | SUS316L HiMo | SUS316L |
| Surface Treatment | - | - | - | - | Special Chemical Polishing | - | - | - | - |
| Thread Size | M12 ～ M24 | M12 ～ M24 | M2 ～ M8 | M3 ～ M6 | M3 ～ M8 | M3 ～ M10 | M3 ～ M8 | M6 ～ M12 | 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 | SNHDS-M12 SNHDS-M16 SNHDS-M20 SNHDS-M24 | SHNDS-M12 SHNDS-M16 SHNDS-M20 SHNDS-M24 | SNSL-M2 SNSL-M2.5 SNSL-M3 SNSL-M4 SNSL-M5 SNSL-M6 SNSL-M8 | SNSL-M3-UCL SNSL-M4-UCL SNSL-M5-UCL SNSL-M6-UCL | SNSL-M3-PC SNSL-M4-PC SNSL-M5-PC SNSL-M6-PC SNSL-M8-PC | SNSLG-M10 SNSLG-M3 SNSLG-M4 SNSLG-M5 SNSLG-M6 SNSLG-M8 | SNSX-M3-88 SNSX-M4-88 SNSX-M5-88 SNSX-M6-88 SNSX-M8-88 | SNSX-M10-109 SNSX-M12-109 SNSX-M6-109 SNSX-M8-109 | SNSLG-M3-UCL SNSLG-M4-UCL SNSLG-M5-UCL SNSLG-M6-UCL |
| Image |  |
 |
 |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|---|
| Part Name | Socket Head Cap Captive Screws - Low Temperature Black Chrome Treatment | High Strength Stainless Steel Socket Head Cap Screws – Low Temperature Black Chrome Treatment | Hex Socket Head Cap Screws - PTFE Coating | Flanged Socket Head Cap Screws - PTFE Coating | High Strength Stainless Steel Socket Head Cap Screws – PTFE Coating | Socket Head Cap Captive Screws - PTFE Coating | Hex Head Screws - PFA Coating for Head | Seal Washers - PFA Coating | Hex Socket Head Cap Screws - Super Black |
| Part Number | SSC-RY | SNSLG-RY | SNSS-TF | SFSS-TF | SNSLG-TF | SSC-TF | SNHS-HTF | SWS-HTF | SNSS-BK |
| Feature | Chemical Resistance Anti-reflection Seizing Prevention Captive / Loss Prevention |
High Strength (Strength Class 10.8 Equivalent) Non-magnetic Chemical Resistance Anti-reflection Seizing Prevention |
Chemical Resistance Seizing Prevention |
Flanged Chemical Resistance Seizing Prevention |
High Strength (Strength Class 10.8 Equivalent) Non-magnetic Chemical Resistance Seizing Prevention |
Chemical Resistance Seizing Prevention Captive / Loss Prevention |
Chemical Resistance | Chemical Resistance | Reflection Resistance Corrosion Resistance |
| Price | From 13.73 USD | From 11.68 USD | From 9.42 USD | From 10.65 USD | From 10.99 USD | From 13.04 USD | From 7.90 USD | From 7.21 USD | From 22.11 USD |
| Material | SUSXM7 (Equivalent to SUS304) | SUS316L | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUS316L | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUS304 | SUSXM7 (Equivalent to SUS304) |
| Surface Treatment | Low temperature black chrome treatment | Low temperature black chrome treatment | PTFE coating | PTFE coating | PTFE coating | PTFE coating | PFA Coating | PFA Coating | Stainless Steel Black |
| Thread Size | M3 ～ M8 | M3 ～ M6 | M3 ～ M10 | M4 ～ M8 | M3 ～ M6 | M3 ～ M8 | M3 ～ M8 | M3 ～ M8 | M2 ～ M10 |
| Operating Temperature (℃) | - | - | - | - | - | - | - | - | - |
| CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD |
| Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications |
| List | SSC-M3-RY SSC-M4-RY SSC-M5-RY SSC-M6-RY SSC-M8-RY | SNSLG-M3-RY SNSLG-M4-RY SNSLG-M5-RY SNSLG-M6-RY | SNSS-M10-TF SNSS-M3-TF SNSS-M4-TF SNSS-M5-TF SNSS-M6-TF SNSS-M8-TF | SFSS-M4-TF SFSS-M5-TF SFSS-M6-TF SFSS-M8-TF | SNSLG-M3-TF SNSLG-M4-TF SNSLG-M5-TF SNSLG-M6-TF | SSC-M3-TF SSC-M4-TF SSC-M5-TF SSC-M6-TF SSC-M8-TF | SNHS-M3-HTF SNHS-M4-HTF SNHS-M5-HTF SNHS-M6-HTF SNHS-M8-HTF | SWS-3-HTF SWS-4-HTF SWS-5-HTF SWS-6-HTF SWS-8-HTF | SNSS-M10-BK SNSS-M2-BK SNSS-M3-BK SNSS-M4-BK SNSS-M5-BK SNSS-M6-BK SNSS-M8-BK |
/14306_1.jpg?awscf_publishdate=2026-06-23 18:35)
/14306_1.jpg?awscf_publishdate=2026-06-23 18:35)
/14306_1.jpg?awscf_publishdate=2026-06-23 18:35)
/14306_1.jpg?awscf_publishdate=2026-06-23 18:35)
/14306_1.jpg?awscf_publishdate=2026-06-23 18:35)
/14306_1.jpg?awscf_publishdate=2026-06-23 18:35)
/14306_1.jpg?awscf_publishdate=2026-06-23 18:35)
/14306_1.jpg?awscf_publishdate=2026-06-23 18:35)
| Image |  |
 |
 |
 |
 |
 |
 |
||
|---|---|---|---|---|---|---|---|---|---|
| Part Name | Plastic Wing Screw - POM | Plastic Wing Nut - POM | Plastic Cap Nut - POM | Cover Caps | Cover Caps | Cover Caps - PTFE | Socket Head Cap Screws for Cover Caps | ||
| Part Number | SPO-YB | SPO-YN | SPO-CN | SCAP-AL | SCAP-CE | SCAP-PT | SNCPS | ||
| Feature | Chemical Resistance | Chemical Resistance | Chemical Resistance | Low Outgas Corrosion Resistance |
Heat Resistance Chemical Resistance Electrical Insulation |
Chemical Resistance | For Cover Caps | ||
| Price | From 5.57 USD | From 3.74 USD | From 3.08 USD | From 8.58 USD | From 63.55 USD | From 23.18 USD | From 5.60 USD | ||
| Material | Polyacetal | Polyacetal | Polyacetal | A5056 | Al2O3 (Alumina 99.5%) | PTFE (Polytetrafluoroethylene) | SUSXM7 (Equivalent to SUS304) | ||
| Surface Treatment | - | - | - | - | - | - | - | ||
| Thread Size | M5 ～ M8 | M4 ～ M8 | M3 ～ M8 | M5 ～ M16 | M5 ～ M16 | M5 ～ M16 | M3 ～ M10 | ||
| Operating Temperature (℃) | - | - | - | - | - | - | - | ||
| CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | ||
| Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | ||
| List | SPO-M5-YB SPO-M6-YB SPO-M8-YB | SPO-M4-YN SPO-M5-YN SPO-M6-YN SPO-M8-YN | SPO-M3-CN SPO-M4-CN SPO-M5-CN SPO-M6-CN SPO-M8-CN | SCAP-10-AL SCAP-3-AL SCAP-4-AL SCAP-5-AL SCAP-6-AL SCAP-8-AL | SCAP-10-CE SCAP-3-CE SCAP-4-CE SCAP-5-CE SCAP-6-CE SCAP-8-CE | SCAP-10-PT SCAP-3-PT SCAP-4-PT SCAP-5-PT SCAP-6-PT SCAP-8-PT | SNCPS-M10 SNCPS-M3 SNCPS-M4 SNCPS-M5 SNCPS-M6 SNCPS-M8 |
Latest
Helpful Resources
Search by purpose
Product IntroductionCustomizationServices & Product OptionsIssue/case studiesTechnical DataUsageSelection MethodInstallation Method/MaintenanceSafety PrecautionsGlossary
Search by keyword
Improved productivity/workabilitySafety measures/precautionary measuresReduced cost/energy saving/long lifeVibration prevention/high precisionCompact/space-saving/lightweightCustomizationHigh strength/high rigidityHeat resistance/corrosion resistanceElegant functionality/designCleanroom/vacuum/non-magneticSeizing PreventionAutomation/robots/motorizationOthers
Search by industry
Machine ToolsSemiconductor Manufacturing EquipmentFood MachineryAutomotive Manufacturing ProcessMedical EquipmentFA Devices
Search by series
The Semiconductor Industry and NBKVideo LibraryHints for correctly using NBK productsSolution samplesWhat is a Screw?Description of Mechanical Components for EngineersDescription of Special Screws for Engineers3 Min Engineering TipsServices & Product OptionsTechnical Data
