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UNC Screws, UNF Screws

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

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Part Name	Hex Socket Head Cap Screws - Inch Thread	Socket Head Cap Screws with Small Head (Inch Thread)	Socket Button Head Cap Screws - Inch Thread	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile (Inch Thread)	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile - Stainless Steel (Inch Thread)	Hex Socket Head Cap Screws (with Ventilation Hole / Inch Screws)	Socket Head Cap Captive Screws (Inch Screws)	Hex Nut for Inch Screw	Flat Washer for Inch Screw
Part Number	SNSS(INCH)	SNSS-SD(INCH)	SNBS(INCH)	SET-TZB(INCH)	SETS(INCH)	SVSS(INCH)	SSC(INCH)	SHNS(INCH)	SWAS-IF
Feature	Inch Thread	Small Head Small Space	Inch Thread Button Head CapScrews	Hexalobular Socket Extra Low Profile Small Space Inch Screws	Hexalobular Socket Extra Low Profile Small Space Inch Screws	Inch Thread Socket Head Cap Screws	Inch Thread Captive/Loss Prevention	For Inch Screws	For Inch Screws
Material	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	Equivalent to SUS304	Steel	SUSXM7 (Equivalent to SUS304)	Equivalent to SUS304	SUSXM7 (Equivalent to SUS304)	Equivalent to SUS304	Equivalent to SUS304
Surface Treatment	-	-	-	Trivalent chromate treatment	-	-	-	-	-
Thread Size	No.4-40UNC ～ 3/8-16UNC	No.4-40UNC ～ 5/16-18UNC	No.4-40UNC ～ 1/4-20UNC	No.6-32UNC ～ No.10-32UNF	No.4-40UNC ～ No.10-32UNF	No.4-40UNC ～ 1/4-20UNC	No.4-40UNC ～ 1/4-20UNC	No.4-40UNC ～ 3/8-16UNC	No.4-40UNC ～ 3/8-16UNC
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SNSS-#10-24 SNSS-#10-32 SNSS-#12-24 SNSS-#4-40 SNSS-#5-40 SNSS-#6-32 SNSS-#8-32 SNSS-1/4-20 SNSS-1/4-28 SNSS-3/8-16 SNSS-5/16-18	SNSS-#10-24-SD SNSS-#10-32-SD SNSS-#4-40-SD SNSS-#6-32-SD SNSS-#8-32-SD SNSS-1/4-20-SD SNSS-5/16-18-SD	SNBS-#10-24 SNBS-#10-32 SNBS-#4-40 SNBS-#5-40 SNBS-#6-32 SNBS-#8-32 SNBS-1/4-20	SET-#10-24-TZB SET-#10-32-TZB SET-#6-32-TZB SET-#8-32-TZB	SETS-#10-24 SETS-#10-32 SETS-#4-40 SETS-#6-32 SETS-#8-32	SVSS-#10-24 SVSS-#10-32 SVSS-#4-40 SVSS-#5-40 SVSS-#6-32 SVSS-#8-32 SVSS-1/4-20	SSC-#10-32 SSC-#4-40 SSC-#6-32 SSC-#8-32 SSC-1/4-20	SHNS-#10-24 SHNS-#10-32 SHNS-#4-40 SHNS-#6-32 SHNS-#8-32 SHNS-1/4-20 SHNS-3/8-16 SHNS-5/16-18	SWAS-#10-IF SWAS-#4-IF SWAS-#6-IF SWAS-#8-IF SWAS-1/4-IF SWAS-3/8-IF SWAS-5/16-IF

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Part Name	Spring Washer for Inch Screw	Plastic Screw - Hex Socket Head Cap Screw - Inch Thread - PEEK	Plastic Screw - Hex Head Screw - Inch Thread - PEEK	Plastic Screw - Cross Recessed Pan Head Machine Screw - PEEK - Inch Thread	Plastic Screw - Cross Recessed Pan Head Machine Screw - RENY - Inch Thread	Plastic Screw - Slotted Pan Head Machine Screw - PEEK - Inch Thread	Plastic Screw - Slotted Flat Head Machine Screw - PEEK - Inch Thread	Plastic Hex Nut for Inch Screw - PEEK	Hex Keys for Inch Screws
Part Number	SWAS-IS	SPE-C(INCH)	SPE-H(INCH)	SPE-P(INCH)	SPA-P(INCH)	SPE-PS(INCH)	SPE-FS(INCH)	SPE-N(INCH)	SKH(INCH)
Feature	For Inch Screws	Chemical Resistance	Chemical Resistance Heat Resistance	Heat Resistance Chemical Resistance	High Strength High Specific Strength	Chemical Resistance	Chemical Resistance	Chemical Resistance	For Inch Screws
Material	Equivalent to SUS304	PEEK	PEEK	PEEK	RENY	PEEK	PEEK	PEEK	Steel
Surface Treatment	-	-	-	-	-	-	-	-	Ferrosoferric Oxide Film (Black)
Thread Size	No.4-40UNC ～ 3/8-16UNC	No.4-40UNC ～ 1/4-20UNC	1/4-20UNC	No.2-56UNC ～ 1/4-20UNC	No.4-40UNC	No.4-40UNC ～ No.10-32UNF	No.4-40UNC ～ No.10-32UNF	No.4-40UNC ～ No.8-32UNC	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SWAS-#10-IS SWAS-#4-IS SWAS-#6-IS SWAS-#8-IS SWAS-1/4-IS SWAS-3/8-IS SWAS-5/16-IS	SPE-#10-24-C SPE-#10-32-C SPE-#4-40-C SPE-#6-32-C SPE-#8-32-C SPE-1/4-20-C	SPE-1/4-20-H	SPE-#10-24-P SPE-#10-32-P SPE-#2-56-P SPE-#4-40-P SPE-#6-32-P SPE-#8-32-P SPE-1/4-20	SPA-#4-40-P	SPE-#10-32-PS SPE-#4-40-PS SPE-#6-32-PS SPE-#8-32-PS	SPE-#10-32-FS SPE-#4-40-FS SPE-#6-32-FS SPE-#8-32-FS	SPE-#4-40-N SPE-#6-32-N SPE-#8-32-N	SKH-1/16 SKH-1/4 SKH-1/8 SKH-3/16 SKH-3/32 SKH-5/16 SKH-5/32 SKH-5/64 SKH-7/64 SKH-9/64

Latest

Plastic Screw Property

This page describes "Plastic Screw Properties" such as PEEK, PTFE (Polytetrafluoroethylene), PPS, PC (polycarbonate) and PP (polypropylene).

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

Here we introduce advantages, usage examples, lineups and the like regarding screws with lower head height than ordinary screws, referred to as "low profile screws" or "low profile cap screws" (low head, slim head).

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

Hex Socket Head Cap Screws (cap bolts) are bolts (screws) with hexagon-shaped holes in their heads. It lists product descriptions for hex socket head cap screws, recommended products, etc.

No. 6: Thermal Cycling

Here we discuss thermal cycling, which is often an issue in semiconductor manufacturing equipment.

Helpful Resources

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

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

No. 6: Thermal Cycling

What are Captive Screws? Introduction of the NBK Captive Series

Comparison of the Dimensions of Low Profile Screws and Small Head Screws

Customization

Flexus

Designs and Examples of What NBK Can Create

Ball Rollers : Characteristics

Custom made

Cleanroom Wash / Cleanroom Packing Service

Screw Length Adjustment Service

Couplings Bore and Keyway Additional Modification Service

Captive Processing Service

Screw combination service

No. 6: Thermal Cycling

Vol.1 What is Seizing (Galling)?

Vol.7 Screw Tightening Control Methods

Select the best screws for your needs

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

Plastic Screw Property

Vol.4 What are washers used for?

Hexagon Socket Head Cap Screws Excerpts from ISO 4762：2004, JIS B 1176:2015

Vol. 12 Back to Basics Series! Screw Reference Dimensions

Slip Torque of Coupling – Set Screw Type

Coupling and Single-axis Actuator Assembly Method

Hints for correctly using NBK products: Quick Positioning Brackets

Hints for correctly using NBK products: Captive Washer for Pull

Hints for correctly using NBK products: Metal Super Knob

Hints for correctly using NBK products: Ball Plungers

Choosing the most suitable coupling

Choosing the most suitable coupling

Procedure of Selection (Actuator)

Procedure of Selection

Procedure of Selection

No. 6: Thermal Cycling

What are Captive Screws? Introduction of the NBK Captive Series

No. ９: Increasing Throughput

No. 2: Vacuum environments

Vol.7 Screw Tightening Control Methods

What are Captive Screws? Introduction of the NBK Captive Series

SEMS Screws: Efficiency and Convenience in Fastening

No. 2: Vacuum environments

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

Use the NBK Captive Screw Series to be comply with CE

Preventing gaps between the sheet and screw when fastening thin sheets

What is Specific Strength? A new index for weight reduction of equipment 【Smaller and Lighter】

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

Higher torque and Lower price.

NBK SPECIAL SCREWS

What is a Coupling? Explanation of Types and Characteristics

Solving common issues with Semiconductor Manufacturing Equipment（Pre-Process）

Vol.6 Varieties of Screws "Beyond" SUS

A new generation of disk couplings

A new generation of disk couplings

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

No. 6: Thermal Cycling

Comparison of the Dimensions of Low Profile Screws and Small Head Screws

No. ９: Increasing Throughput

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

What makes our custom screws special

Customization

NBK SPECIAL SCREWS

Flexus

Designs and Examples of What NBK Can Create

No. 6: Thermal Cycling

No. 5: Solving common problems inside equipment

Solving common issues with Semiconductor Manufacturing Equipment（Pre-Process）

What is Specific Strength? A new index for weight reduction of equipment 【Smaller and Lighter】

Higher torque and Lower price.

Plastic Screw Property

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

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

What are Captive Screws? Introduction of the NBK Captive Series

Comparison of the Dimensions of Low Profile Screws and Small Head Screws

Plastic Screw Property

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

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

No. 6: Thermal Cycling

What are Captive Screws? Introduction of the NBK Captive Series

Vol.1　What is Seizing (Galling)?

Vol.7　Screw Tightening Control Methods

Vol.4　What are washers used for?

Vol.7　Screw Tightening Control Methods

Vol.6　Varieties of Screws "Beyond" SUS

Vol.1　What is Seizing (Galling)?

Vol.7　Screw Tightening Control Methods

Vol.1　What is Seizing (Galling)?

Vol.4　What are washers used for?

Vol.7　Screw Tightening Control Methods