Special Screws

SVSI1S_SVSI1S-PC

New Products introduced : Hex Socket Head Cap Screw with Captive Washer and Ventilation Hole

Nov. 28. 2023 Special Screws

(I=1)　SVSI1S
Screws with washers integrated in advance 
Improved work efficiency

Special chemical polishing treatment (I=1)　SVSI1S-PC
Screws with washers integrated in advance 
Improved work efficiency

SNSI1T_SNSI1T-UT_SNSI3T_SNSI3T-UT

New Products introduced : Titanium Hex Socket Head Cap Screws with Captive Washers

Nov. 28. 2023 Special Screws

Special chemical polishing/brightening treatment (I=1)　SNSI1T
Screws with washers integrated in advance 
Improved work efficiency

No surface treatment (I=1)　SNSI1T-UT
Screws with washers integrated in advance 
Improved work efficiency

Special chemical polishing/brightening treatment (I=3)　SNSI3T
Screws with washers integrated in advance 
Improved work efficiency

No surface treatment (I=3)　SNSI3T-UT
Screws with washers integrated in advance 
Improved work efficiency

SNPI1S_SNPI3S_SNSQS

New Products introduced : Washer Integrated Screws

Oct. 31. 2023 Special Screws

Phillips Cross Recessed Pan Head Machine Screws (I=1)　SNPI1S
Screws with washers integrated in advance 
Improved work efficiency

Phillips Cross Recessed Pan Head Machine Screws (I=3)　SNPI3S
Screws with washers integrated in advance 
Improved work efficiency

Hex Socket Head Cap Screws (I=3)　SNSQS
Screws with washers integrated in advance 
Improved work efficiency

SSHH-C22

New Products introduced : Hex Socket Head Cap Screws with Special Low Profile (Hastelloy C-22 equiv.)

Aug. 01. 2023 Special Screws

SSHH-C22
Special Low Profile Cap Screws that are equivalent to Hastelloy C-22 and have excellent corrosion resistance against oxidizing and reducing acids and salts

SSC-SET

New Products introduced : Hex Socket Head Cap Captive Screw/Captive Washer Sets

Jun. 27. 2023 Special Screws

SSC-SET
Captive screw (SSC) and captive washer (SWAS-SC) set product for double fallout countermeasures

SNSS-UCL_SNSL-UCL_SLHS-UCL_SSHS-UCL_SSHL-UCL

New Products introduced : Hex socket head cap screws with cleanroom washing/cleanroom packing provided

Jun. 27. 2023 Special Screws

SUSXM7　SNSS-UCL

SUS316L　SNSL-UCL

Low Profile / SUSXM7　SLHS-UCL

Special Low Profile / SUSXM7　SSHS-UCL

Special Low Profile / SUS316L　SSHL-UCL

SSHS-UC

New Products introduced : Hex Socket Head Cap Screws with Special Low Profile (For Fixing Thin Plates)

Apr. 25. 2023 Special Screws

SSHS-UC
Hex Socket Head Cap Screws with Special Low Profile enabling fastening of thin plates of 0.1mm and up without washers

SNZP

New Products introduced : Phosphor Bronze Pan Head Machine Screws for Precision Instruments (Miniature Screws)

Mar. 28. 2023 Special Screws

SNZP
Added phosphor bronze miniature screws for precision instruments

SEQS

New Products introduced : Cross Recessed Head Cap Screws with Extra Low Profile - Stainless Steel

Mar. 28. 2023 Special Screws

SEQS
Added stainless steel cross recessed type to low profile screws

SNS

New Size variation introduced : Hex Socket Head Cap Screws for Precision Instruments

Mar. 28. 2023 Special Screws

SNS
Added micro sizes M2-3-MS/M2-5-MS

SWAS-VF

New Size variation introduced : Washers with Ventilation Grooves

Mar. 28. 2023 Special Screws

SWAS-VF
Added semiconductor manufacturing equipment sizes with nominal of thread M2/M2.5

SNSL

New Size variation introduced : Hex Socket Head Cap Screws (SUS316L)

Nov. 29. 2022 Special Screws

SNSL
Added Nominal of Thread M1.6/M2/M2.5

SNSTG

New Size variation introduced : Hex Socket Head Cap Screws - High Intensity Titanium Alloy

Nov. 29. 2022 Special Screws

SNSTG
Added Nominal of Thread M2/M2.5

SNSP

New Size variation introduced : Hex Socket Head Cap Screws - Phosphor Bronze

Nov. 29. 2022 Special Screws

SNSP
Added Nominal of Thread M2/M2.5

SKXB

New Size variation introduced : Hexalobular Short Bits

Oct. 25. 2022 Special Screws

SKXB
Added No.3 Hexalobular Socket

SNZCXS_SNZCXS-ALK

New Products introduced : Hexalobular Socket Flat Head Machine Screws (Miniature Screws) for Precision Instruments

Jul. 26. 2022 Special Screws

SNZCXS

Nylon Patch　SNZCXS-ALK

SNZS-M_SNZ-TBZ

New Size variation introduced : Pan Head Machine Screws for Precision Instruments

Jul. 26. 2022 Special Screws

SUSXM7　SNZS-M
Add 10 mm of L dimensions to nominal M2.5 and M2.6 screws

SWCH16A　SNZ-TBZ
Add M1.6 and M2.5 to nominal of thread, add 10 mm of L dimensions to nominal M2.6 screw

SNCW

New Products introduced : Slotted Cheese Head Machine Screws (Tungsten)

May. 31. 2022 Special Screws

SNCW

SVSI_SVSH-C276_SVSH-C22_SVSM_SVSA

New Products introduced : Hex Socket Head Cap Screws with Ventilation Hole

Dec. 01. 2021 Special Screws

Inconel equiv.　SVSI

Hastelloy C-276 equiv.　SVSH-C276

Hastelloy C-22 equiv.　SVSH-C22

Molybdenum　SVSM

Aluminum　SVSA

SKEK-6.35_SKEK-9.5_SKEK-12.7

New Size variation introduced : Stripped Hex Head Screws/Bolts Removal Sockets

Dec. 01. 2021 Special Screws

Insertion Angle 6.35　SKEK-6.35
Add the nominal size of applicable hexagonal width across flats

Insertion Angle 9.5　SKEK-9.5
Add the nominal size of applicable hexagonal width across flats

Insertion Angle 12.7　SKEK-12.7
New product release

SKEK-SET

New Products introduced : Stripped Hex Head Screws/Bolts Removal Socket Sets

Dec. 01. 2021 Special Screws

SKEK-SET

SICX-SX

New Products introduced : Slotted Pan Head Screws (Silicon Carbide)

Oct. 26. 2021 Special Screws

SICX-SX

SKMWCP-200

New Products introduced : CFRTP Adjustable Wrench

Oct. 26. 2021 Special Screws

SKMWCP-200

SVSHL_SVSHT

New Products introduced : Hex Socket Head Cap Screw with Special Low Profile (with Ventilation Hole)

Oct. 01. 2021 Special Screws

SUS316L　SVSHL

Titanium　SVSHT

SNSTA

New Products introduced : Hex Socket Head Cap Screws (Tantalum)

Aug. 31. 2021 Special Screws

SNSTA

SNSQLG_SVSQLG

New Products introduced : Washer Integrated Hex Socket Head Cap Screws - High Strength Stainless Steel

Jun. 29. 2021 Special Screws

SNSQLG

With Ventilation Hole　SVSQLG

SWALG-F

New Products introduced : Plain Washers for High Strength Stainless Steel Bolts

Jun. 29. 2021 Special Screws

SWALG-F

SPEG-C

New Products introduced : Plastic Screws - Hex Socket Head Cap Screws - PEEK GF30

Mar. 30. 2021 Special Screws

SPEG-C

SNSMT

New Products introduced : Hex Socket Head Cap Screws (MAT21)

Feb. 16. 2021 Special Screws

SNSMT

SRXB

New Products introduced : Hexalobular Socket Head Cap Bits (with Pin) for Tamper Resistant Screws

Jan. 05. 2021 Special Screws

SRXB

SRHB

New Products introduced : Hex Socket Head Cap Bits (with Pin) for Tamper Resistant Screws

Jan. 05. 2021 Special Screws

SRHB

SETS(INCH)

New Products introduced : Hexalobular Socket Head Cap Screw with Extra Low Profile (Inch Thread/Stainless Steel)

Aug. 25. 2020 Special Screws

SETS(INCH)

SPE-LH_SPE-SH

New Products introduced : Plastic Screw PEEK

Jul. 28. 2020 Special Screws

Hexalobular Socket Head Cap Screw / Low Head　SPE-LH

Hexalobular Socket Head Cap Screw / Special Low Head　SPE-SH

SPS-LH_SPS-SH

New Products introduced : Plastic Screw PPS

Jul. 28. 2020 Special Screws

Hexalobular Socket Head Cap Screw / Low Head　SPS-LH

Hexalobular Socket Head Cap Screw / Special Low Head　SPS-SH

SPA-LH_SPA-SH

New Products introduced : Plastic Screw RENY

Jul. 28. 2020 Special Screws

Hexalobular Socket Head Cap Screw / Low Head　SPA-LH

Hexalobular Socket Head Cap Screw / Special Low Head　SPA-SH

SKHTG

New Products introduced : Titanium Hexagon Key

Mar. 31. 2020 Special Screws

SKHTG

SET-TZB(INCH)

New Products introduced : Hexalobular Socket Head Cap Screw with Extra Low Head (Inch Thread)

Mar. 31. 2020 Special Screws

SET-TZB(INCH)

SVSLG

New Products introduced : Hex Socket Head Cap Screws with Ventilation Hole - High Intensity Stainless Steel

Nov. 26. 2019 Special Screws

SVSLG

SKEIBD-SET

New Products introduced : Stripped Screw Removal Bits / Impact Screwdriver Sets

Oct. 29. 2019 Special Screws

SKEIBD-SET

New Products (Hex Head Screws (Galvanic Corrosion Prevention Treatment)) introduced : Special Screw

Feb. 26. 2019 Special Screws

SNH-GJ

New Products (Hex Nuts / Washers (Galvanic Corrosion Prevention Treatment)) introduced : Special Screw

Feb. 26. 2019 Special Screws

Hex Nuts　SHN-GJ

Washers　SWA-F-GJ

New Products (Stripped Screw Removal Bits / Dedicated Impact Screwdrivers) introduced : Special Screw

Nov. 27. 2018 Special Screws

For hex sockets　SKEIB

For cross-recessed sockets　SKEIB-PH

Impact Screwdrivers　SKEID

New Products (Stripped Hexagon Screw Removal Sockets) introduced : Special Screw

Nov. 27. 2018 Special Screws

SKEK-6.35

SKEK-9.5

New Products (Hex Socket Head Cap Screws with Special Low Profile (Nylon Patch)) introduced : Special Screw

Nov. 27. 2018 Special Screws

Steel　SSH-EL-ALK

Stainless Steel　SSHS-ALK

New Products (Hexalobular Socket Head Cap Screws with Extreme Low Profile (Nylon Patch)) introduced : Special Screw

Nov. 27. 2018 Special Screws

Steel　SET-NI-ALK

Stainless Steel　SETS-ALK

New Products (Pan Head Machine Screws for Precision Instruments (Miniature Screws with Nylon Patch)) introduced : Special Screw

Nov. 27. 2018 Special Screws

Steel　SNZ-TBZ-ALK

Stainless Steel　SNZS-ALK

New Products (Plastic Screws - RENY) introduced : Special Screw

Oct. 30. 2018 Special Screws

Hex Posts　SPA-HA

Threaded Rods　SPA-Z

New Size variation introduced (Plastic Screw - RENY) : Special Screw

Oct. 30. 2018 Special Screws

Hex Head Screws　SPA-H

Hex Socket Head Cap Screws　SPA-C

Phillips Cross Recessed Flat Head Machine Screws　SPA-F

Hex Socket Low Head Bolt　SPA-LC

Cross Recessed Pan Head Machine Screws　SPA-P

New Products (Plastic Screws - PC) introduced : Special Screw

Oct. 30. 2018 Special Screws

Hex Head Screws　SPC-H

Hex Socket Head Cap Screws　SPC-C

Phillips Cross Recessed Flat Head Machine Screws　SPC-F

Threaded Rods　SPC-Z

New Size variation introduced (Plastic Screw - PC) : Special Screw

Oct. 30. 2018 Special Screws

Hex Nuts　SPC-N

Washers　SPC-W

Cross Recessed Pan Head Machine Screws　SPC-P

New Products (Plastic Screws - PEEK) introduced : Special Screw

Oct. 30. 2018 Special Screws

Hex Posts　SPE-HB

New Size variation introduced (Plastic Screw - PEEK) : Special Screw

Oct. 30. 2018 Special Screws

Hex Head Screws　SPE-H

Hex Socket Head Cap Screws　SPE-C

Cross Recessed Flat Head Machine Screws　SPE-F

Cross Recessed Pan Head Machine Screws　SPE-P

New Products (Plastic Screws - PFA) introduced : Special Screw

Oct. 30. 2018 Special Screws

Hex Head Screws　SPFA-H

Hex Nuts　SPFA-N

New Products (Plastic Screws - POM) introduced : Special Screw

Oct. 30. 2018 Special Screws

Wing Bolts　SPO-YB

Wing Nuts　SPO-YN

Domed Cap Nuts　SPO-CN

New Size variation introduced (Plastic Screw - PP) : Special Screw

Oct. 30. 2018 Special Screws

Hex Head Screws　SPP-H

Hex Nuts　SPP-N

Washers　SPP-W

New Size variation introduced (Plastic Screw - PPS) : Special Screw

Oct. 30. 2018 Special Screws

Hex Head Screws　SPS-H

Phillips Cross Recessed Flat Head Machine Screws　SPS-F

Cross Recessed Pan Head Machine Screws　SPS-P

New Products (Plastic Screws - PVDF) introduced : Special Screw

Oct. 30. 2018 Special Screws

Hex Nuts　SPV-N

Washers　SPV-W

New Size variation introduced (Plastic Screw - PVDF) : Special Screw

Oct. 30. 2018 Special Screws

Hex Head Screws　SPV-H

Hex Socket Head Cap Screws　SPV-C

New Products (Hex Socket Flat Head Bolts (with Pin)) introduced : Special Screw

Aug. 28. 2018 Special Screws

SRHFS

New Products (Triwing Flat Head Machine Screws) introduced : Special Screw

Aug. 28. 2018 Special Screws

SRWFS

New Products (Triangular Socket Button Head Cap Screws) introduced : Special Screw

Aug. 28. 2018 Special Screws

SRTRS

New Products (Button Head Cap Screws with Three-Lobe Holes (with Pin)) introduced : Special Screw

Aug. 28. 2018 Special Screws

SRSAS

New Products (SKNBR-6.35-8SET:Bit Ratchet Handle Sets for Extremely Limited Access Spaces) introduced : Special Screw

Jul. 31. 2018 Special Screws

SKNBR-6.35-8SET

New Products (SKABA:Bit Adapters) introduced : Special Screw

Jul. 31. 2018 Special Screws

SKABA

New Products (SNSS-SD(INCH) : Hex Socket Head Cap Screws with Small Head - Inch Thread) introduced : Special Screw

May. 29. 2018 Special Screws

SNSS-SD(INCH)

New Products (SPE-C(INCH) : Plastic Screws - Hex Socket Head Cap Screws - Inch Thread - PEEK) introduced : Special Screw

May. 29. 2018 Special Screws

SPE-C(INCH)

New Products (SPE-P(INCH) : Plastic Screws - Cross Recessed Pan Head Machine Screws - PEEK - Inch Thread) introduced : Special Screw

May. 29. 2018 Special Screws

SPE-P(INCH)

New Products (SPE-PS(INCH) : Plastic Screws - Slotted Pan Head Machine Screws - PEEK - Inch Thread) introduced : Special Screw

May. 29. 2018 Special Screws

SPE-PS(INCH)

New Products (SPE-FS(INCH) : Plastic Screws - Slotted Flat Head Machine Screws - PEEK - Inch Thread) introduced : Special Screw

May. 29. 2018 Special Screws

SPE-FS(INCH)

New Products (SPE-H(INCH) : Plastic Screws - Hex Head Screws - Inch Thread - PEEK) introduced : Special Screw

May. 29. 2018 Special Screws

SPE-H(INCH)

New Products (SPE-N(INCH) : Plastic Screws - Hex Nuts - Inch Thread - PEEK) introduced : Special Screw

May. 29. 2018 Special Screws

SPE-N(INCH)

New Products (SPEG-C(INCH) : Plastic Screws - Hex Socket Head Cap Screws - Inch Thread - PEEK GF30) introduced : Special Screw

May. 29. 2018 Special Screws

SPEG-C(INCH)

New Products (SPEG-P(INCH) : Plastic Screws - Cross Recessed Pan Head Machine Screws - PEEK GF30 - Inch Thread) introduced : Special Screw

May. 29. 2018 Special Screws

SPEG-P(INCH)

New Products (SPA-P(INCH) : Plastic Screws - Cross Recessed Pan Head Machine Screws - RENY - Inch Thread) introduced : Special Screw

May. 29. 2018 Special Screws

SPA-P(INCH)

New Products (SKCK:Hexagon Socket - with Screw Holding Function) introduced : Special Screw

Apr. 24. 2018 Special Screws

SKCK-6.35

SKCK-9.5

New Products (SKCD:Hexagon Screwdriver - with Screw Holding Function) introduced : Special Screw

Apr. 24. 2018 Special Screws

SKCD

New Products (SNSLG:Hex Socket Head Cap Screws - High Intensity S.S.) introduced : Special Screw

Feb. 27. 2018 Special Screws

SNSLG

New Products (SNZT:Titanium Pan Head Machine Screws for Precision Instruments) are introduced at Special Screw

Dec. 12. 2017 Special Screws

SNZT

New Size variation are introduced at Theft Prevention Nuts

Nov. 28. 2017 Special Screws

SHNRS

New Products (SKND:Low Profile Screwdrivers for Extremely Limited Access Spaces) are introduced at Special Screw

Oct. 31. 2017 Special Screws

For hex socket　SKND

For cross-recessed socket　SKND-PH

For slotted grooves　SKND-SLOT

New Products (SKX-N:Hexalobular Wrenches for Extremely Limited Access Spaces) are introduced at Special Screw

Oct. 31. 2017 Special Screws

SKX-N

New Products (SKXB:Hexalobular Short Bits) are introduced at Special Screw

Oct. 31. 2017 Special Screws

SKXB

New Size variation are introduced at Hex Socket Flange Head Screw Plugs

Oct. 31. 2017 Special Screws

SFMS-M

New Size variation are introduced at Hexagon Socket Flange Head Screw Plug with O-Ring

Jul. 25. 2017 Special Screws

SFMS-M

New Products (SEQ:Cross Recessed Head Cap Screws with Extra Low Profile) are introduced at Special Screw

Mar. 28. 2017 Special Screws

Trivalent Chromate Treatment (Silver)　SEQ-TZB

Black Trivalent Chromate Treatment　SEQ-TBZ

Bits for Cross Recessed Head Cap Screws with Extra Low Profile　SKQB

New Products (SRGS:Fivelobe Socket Button Head Cap Screw with Pin) are introduced at Special Screw

Mar. 28. 2017 Special Screws

Button Head Cap Screws with Five-Lobe Holes　SRGS

Special Bits for Tamper Resistance Screws　SRGB

New Products (SVSL-PN:Hex socket Head Cap Screws with Ventilation Hole / Surface Hardening Treatment) are introduced at Special Screw

Oct. 25. 2016 Special Screws

SVSL-PN

New Size variation are introduced at Theft Prevention Nuts

Oct. 25. 2016 Special Screws

Anti - theft Nut　SHNRS

Dedicated removal tools　SKW

SHINS_画像

New Products (SHINS: Keyed Female-Thread Reinforcing Insert) are introduced at Special Screw

Jul. 26. 2016 Special Screws

Keyed Female-Thread Reinforcing Insert　SHINS

Dedicated Mounting Tool for Keyed Female-Thread Reinforcing Insert　SKK

SQW_SQWS_画像

New Size variation are introduced at Spherical Washer

Jun. 28. 2016 Special Screws

Made of Steel　SQW

Made of Stainless Steel　SQWS

New Products (SSCZS: Pan head captive machine screws for precision instruments (miniature screws)) are introduced at Special Screw

Mar. 29. 2016 Special Screws

SSCZS

New Size variation are introduced at Ribbed Lock Washers

Mar. 29. 2016 Special Screws

Made of Steel　SWR

Made of Stainless Steel　SWRS

New Products (SHNRS: Anti - theft Nut) are introduced at Special Screw

Dec. 16. 2015 Special Screws

Anti - theft Nut　SHNRS

Dedicated removal tools　SKW

New Products (SETA: Aluminum Super Special Low Head Bolt with Hexalobular Socket) are introduced at Special Screw

Nov. 25. 2015 Special Screws

SETA

New Products (SRSHS: Tamper-resistant Special Low Head Bolt) are introduced at Special Screw

Nov. 25. 2015 Special Screws

Tamper-resistant Special Low Head Bolt　SRSHS

Special Bits for Tamper Resistant Screws　SRSHB

New Size variation are introduced at Plastic screw - Fine Thread - PEEK

Nov. 25. 2015 Special Screws

SPE-MC

New Products (SPE-MF: Plastic Screw (PEEK/Machine Screw for Precision Instruments)) are introduced at Special Screw

Nov. 25. 2015 Special Screws

SPE-MF

New Size variation are introduced at Plastic screw - Fine Thread - RENY

Nov. 25. 2015 Special Screws

SPA-MC

New Products (SPA-MF: Plastic Screw (RENY/Machine Screw for Precision Instruments)) are introduced at Special Screw

Nov. 25. 2015 Special Screws

SPA-MF

New Products (SWAS-EW: Eccentric Lock Washer) are introduced at Special Screw

Oct. 28. 2015 Special Screws

SWAS-EW

New Products (SNSMN: Hex Socket Head Cap Screw (Monel 400 equiv.)) are introduced at Special Screw

Jul. 22. 2015 Special Screws

SNSMN

New Products (SNHS-LH: Special Low Head Hexagon Head Bolt) are introduced at Special Screw

Jun. 17. 2015 Special Screws

SNHS-LH

New Products (SWS: Sealing Washers) are introduced at Special Screw

May. 27. 2015 Special Screws

NBR　SWS

Fluororubber　SWS-F

EPDM　SWS-E

Silicone rubber　SWS-S

New Products (SNFCM: Molybdenum Hexagon Socket Countersunk Head Screw) are introduced at Special Screw

Mar. 25. 2015 Special Screws

SNFCM

New Products (SCX: Socket Head Cap Screws/Hex Head Screws - Ceramic) are introduced at Special Screw

Mar. 25. 2015 Special Screws

Socket Head Cap Screws　SCX-C

Hex Head Screws　SCX-H

New Products (SNHDS: Duplex Stainless Steel Hexagon Head Screw) are introduced at Special Screw

Feb. 25. 2015 Special Screws

SNHDS

New Products (SHNDS: Duplex Stainless Steel Hexagon Nuts) are introduced at Special Screw

Feb. 25. 2015 Special Screws

SHNDS

New Products (SFB-EL: Socket Button Head Cap Screw with Flange (Electroless Nickel Plating)) are introduced at Special Screw

Feb. 25. 2015 Special Screws

SFB-EL

New Products (SNSL-PN: Socket Head Screw/SUS316L/Surface Hardening Treatment) are introduced at Special Screw

Dec. 03. 2014 Special Screws

SNSL-PN

New Products (SRFXS: Flat Head Bolt with Hexalobular Socket (with Pin)) are introduced at Special Screw

Sep. 10. 2014 Special Screws

SRFXS

New Products (SWAS-RW: Rosette Washer) are introduced at Special Screw

Sep. 10. 2014 Special Screws

SWAS-RW

New Products (SRFXS-SET: Flat Head Bolt with Hexalobular Socket (with Pin) Rosette Washer Set) are introduced at Special Screw

Sep. 10. 2014 Special Screws

SRFXS-SET

New Products (SPEC-C: Plastic screw (Conductive PEEK / Hex Socket Head Cap Screw)) are introduced at Special Screw

Sep. 10. 2014 Special Screws

SPEC-C

New Products (SLHL: Socket Head Cap Screws with Low Profile - SUS316L) are introduced at e-nedzi.com

Apr. 17. 2013 Special Screws

e-nedzi.com

Low Profile Screws・Small Head Screws

SLHL

New Products (SSHL: Socket Head Cap Screws with Special Low Profile - SUS316L) are introduced at e-nedzi.com

Feb. 13. 2013 Special Screws

e-nedzi.com

Low Profile Screws・Small Head Screws

SSHL

New Products (SSHT: Socket Head Cap Screws with Special Low Profile - Pure Titanium) are introduced at e-nedzi.com

Mar. 06. 2013 Special Screws

e-nedzi.com

Low Profile Screws・Small Head Screws

SSHT