Chemical Resistance

Hydrochloric acid, sulfuric acid, hydrofluoric acid...
We have screws with strong chemical resistance!!

Chemical Resistance

Chemical Names	Composition (%)	Titanium
Hydrochloric Acid	10	B
Hydrochloric Acid	30	D
Sulfuric Acid	10	C
Sulfuric Acid	50	D
Nitric Acid	10	A
Nitric Acid	50	A
Nitrohydrochloric Aid (HCl:HNO³)	3:1	A
Chromic Acid	5	A
Hydrofluoric Acid	5	D
Phosphoric Acid	50	C
Ferric Chloride	10~30	A
Cupric Chloride	10~30	B
Sodium Chloride	10~40	A
Calcium Chloride	50	A
Ammonium Chloride	40	A
Magnesium Chloride	40	A
Ferrous Sulfate	10~50	A
Ammonia	10~30	A
Sodium Hydroxide	50	A
Sodium Carbonate	10	A
Hydrogen Sulfide	Dry Gas	A
Hydrogen Sulfide	Wet Gas	A
Chlorine	Dry Gas	D
Chlorine	Wet Gas	A
Sulfur Dioxide	Dry/Wet Gas	A
Seawater	High Speed Stream	A
Formic Acid	10~50	B
Lactic Acid	50	A
Oxalic Acid	20	D
Citric Acid	10~50	A

Testing Temperature: Room Temperature
A：<0.127 mm/year
B：0.127~0.508 mm/year
C：0.508~1.27 mm/year
D：>1.27 mm/year

Chemical Resistance for Hastelloy/Inconel/Nickel

Chemical Names	Temperature	Hastelloy	Inconel	Nickel
Dilute Sulfuric Acid	Room Temperature	AA	A	A
Dilute Sulfuric Acid	Boiling Point	A	D	D
Concentrate Sulfuric Acid	Room Temperature	AA	C	C
Concentrate Sulfuric Acid	Boiling Point	D	D	D
Dilute Hydrochloric Acid	Room Temperature	AA	B	A
Dilute Hydrochloric Acid	Boiling Point	D	D	D
Concentrate Hydrochloric Acid	Room Temperature	AA	D	D
Concentrate Hydrochloric Acid	Boiling Point	B	D	D
Dilute Nitric Acid	Room Temperature	AA	D	D
Dilute Nitric Acid	Boiling Point	AA	－	D
Concentrate Nitric Acid	Room Temperature	AA	A	D
Concentrate Nitric Acid	Boiling Point	D	－	D
Dilute Phosphoric Acid	Room Temperature	AA	AA	AA
Dilute Phosphoric Acid	Boiling Point	AA	－	D
Concentrate Phosphoric Acid	Room Temperature	AA	AA	AA
Concentrate Phosphoric Acid	Boiling Point	B	－	D
Sodium Hydroxide (Diluted)	Room Temperature	－	AA	AA
Sodium Hydroxide (Diluted)	Boiling Point	－	C	AA
Sodium Hydroxide (Concentrated)	Room Temperature	－	AA	AA
Sodium Hydroxide (Concentrated)	Boiling Point	－	C	AA

AA：Excellent
A ：Good
B ：Useable
C ：Useable under certain conditions
D ：Non Useable

Chemical Resistance for Ceramic Screws

Chemical Names	Temperature	Time	Ceramic
35% Hydrochloric Acid	Boiling	30 minutes	A
70% Sulfuric Acid	Boiling	30 minutes	A
98% Nitric Acid	Boiling	30 minutes	A
90% Phosphoric Acid	Boiling	30 minutes	B
60% Hydrofluoric Acid	20°C	24 hours	C
10% Potassium Hydroxide	80°C	7 Days	A
Potassium Hydroxide	500°C(Boiling)	24 hours	C
Sodium Hydroxide	500°C(Boiling)	24 hours	B
Sodium Carbonate	900°C(Boiling)	24 hours	B
Sodium Sulfate	1000°C(Boiling)	24 hours	A
Potassium Fluoride	90°C(Boiling)	4 hours	D

A : No Corrosion
B : Slight Corrosion
C : Moderate Corrosion
D : Heavy Corrosion

Chemical Resistance

Chemical Names	VESPEL® SP-1	VESPEL® SCP-5000	PEEK	PFA	PTFE	AURUM	PPS	H-PVC	RENY	PC	PP	PVDF
10% Hydrochloric Acid	A	A	A	A	A	A	A	A	C	A	A	A
10% Sulfuric Acid	A	A	A	A	A	A	A	A	C	A	A	A
50% Sulfuric Acid	C	B	C	A	A	C	-	A	C	B	-	A
10% Nitric Acid	B	B	A	A	A	A	A	A	C	A	A	A
50% Nitric Acid	C	C	C	A	A	C	-	B	C	B	-	B
10% Hydrofluoric Acid	B	B	-	A	A	A	-	B	C	A	A	A
50% Hydrofluoric Acid	C	C	C	A	A	C	-	B	C	B	B	A
10%Phosphoric Acid	-	-	A	A	A	A	-	A	C	A	A	A
Formic Acid	B	B	B	A	A	-	-	B	C	A	A	A
10% Acetic Acid	A	A	A	A	A	A	A	A	C	A	A	A
Citric Acid	A	A	A	A	-	A	-	A	B	A	A	A
Chromic Acid	-	-	A	A	A	-	-	A	C	A	A	A
Boric Acid	A	A	A	B	A	-	-	A	B	A	A	A
Methyl Alcohol	B	B	A	A	A	A	A	A	-	B	-	A
Glycol	A	A	A	A	-	A	-	-	-	A	-	A
Ammonia	C	B	A	A	-	A	-	A	A	C	A	A
10% Sodium Hydroxide	C	B	A	A	A	A	A	A	A	-	A	A
10% Potassium Hydroxide	C	B	A	A	A	A	-	A	A	C	A	A
Calcium Hydroxide	-	-	A	A	-	A	-	A	C	A	A	A
Water	A	A	A	A	A	A	A	A	B	A	A	A
Hydrogen Sulfide(Gas)	-	-	A	A	-	-	-	-	A	A	A	A
Sulfur Dioxide	-	-	A	A	-	-	-	-	A	A	A	A
Ammonium Nitrate	-	-	A	A	-	A	-	-	A	A	A	A
Sodium Nitrate	-	-	A	A	-	A	-	-	A	C	A	A
Calcium Carbonate	-	-	A	A	-	A	-	-	A	C	A	A
Calcium Chloride	-	-	A	A	A	A	A	A	A	A	A	A
Magnesium Chloride	-	-	A	A	A	A	-	A	A	A	A	A
Magnesium Sulfate	-	-	A	A	-	A	-	-	A	A	A	A
Zinc Sulfate	-	-	A	A	-	A	-	-	A	A	A	A
Hydrogen Peroxide	B	B	A	A	A	-	-	A	B	A	A	A

A: Usable
B: Usable under certain conditions
C: Non-usable
• Data from samples tested at room temperature (23°C). Chemical Resistance values will vary according to usage conditions, Plastic Screws should be tested under actual performance conditions prior to use.

Hastelloy

	Product Code	Shape	Size	Material	Characteristics
	SNSH	Socket Head Cap Screws	M3~M10	NW6022 (HastelloyC-22)	Chemical Resistance
	SHNH・SWAH	Hexagon nut / Washer	M3~M10	NW6022 (HastelloyC-22)	Chemical Resistance

Titanium

Product Code	Shape	Size	Material	Characteristics
SNST	Socket Head Cap Screws	M3~M12	TB340C (Type II Titanium)	Light, Nonmagnetic, Chemical Resistance
SNPT	Cross Recessed Pan Head Machine Screws	M3~M8	TW270 (Type I Titanium)	Light, Nonmagnetic, Chemical Resistance
SNFT	Cross Recessed Flat Head Machine Screws	M3~M8	TW270 (Type I Titanium)	Light, Nonmagnetic, Chemical Resistance
SHNT	Hexagon nut	M3~M12	TW270 (Type I Titanium) TB340C (Type II Titanium)）	Light, Nonmagnetic, Chemical Resistance, Flange Nut
SWUT	Lock Nut	M3~M12	FRS-9901 (TB340 Equivalent)	Light, Nonmagnetic, Chemical Resistance, Lock Nut
SWAT	Washer	M3~M12	TP340C (Type II Titanium)	Light, Nonmagnetic, Chemical Resistance

Inconel

	Product Code	Shape	Size	Material	Characteristics
	SNSI	Socket Head Cap Screws	M3~M10	NCF600 (Inconel 600)	Chemical Resistance, Heat Resistance
	SHNI/SWAI	Hexagon nut / Washer	M3~M10	NCF600 (Inconel 600)	Chemical Resistance, Heat Resistance

Nickel

	Product Code	Shape	Size	Material	Characteristics
	SNSN	Socket Head Cap Screws	M3~M10	NW2200 (Ni99.0)	Chemical Resistance, Heat Resistance
	SHNN/SWAN	Hexagon nut / Washer	M3~M10	NW2200 (Ni99.0)	Chemical Resistance, Heat Resistance

SUS316L HiMo

	Product Code	Shape	Size	Material	Characteristics
	SNSX	SUS316L HiMo	M3~M12	SUS316L HiMo	High Strength, Corrosion Resistance

SUS310S

	Product Code	Shape	Size	Material	Characteristics
	SNSJ	Socket Head Cap Screws	M3~M10	SUS310S	Heat Resistance, Chemical Resistance
	SHNJ・SWAJ	Hexagon nut / Washer	M3~M10	SUS310S	Heat Resistance, Chemical Resistance

PTFE (Teflon)

	Product Code	Shape	Size	Material	Heat-Resistance Temperature	Characteristics
	SPT-H	Hexagon Head Bolt	M3~M12	PTFE (Teflon)	180°C (UL Standard 94 V-0)	Chemical Resistance
	SPT-N/SPT-W	Hexagon Nut/ Washer	M3~M12 (Hexagon Nut), Nominal 3~12 (Washer)	PTFE (Teflon)	180°C (UL Standard 94 V-0)	Chemical Resistance

PFA (Perfluoroalkoxy)

Product Code	Feature	Size	Material	Heat-Resistance Temperature	Characteristics
SPFA-H	Hexagon Bolt	M4~M8	PFA (Perfluoroalkoxy)	260ºC	Heat Resistance, Chemical Resistance
SPFA-C	Socket Head Cap Screw	M4~M8
SPFA-N	Hexagon Nut	M4~M8

PVDF (Polyvinylidene Fluoride)

Product Code	Shape	Size	Material	Heat-Resistance Temperature	Characteristics
SPV-H	Hexagon Head Bolt	M5~M10	PVDF (Polyvinylidene Fluoride)	-40°C~90°C	Chemical Resistance
SPV-C	Socket Head Cap Screw	M5~M10
SPV-N/SPV-W	Hexagon Nut/Washer	M5~M10 (Hexagon Nut), Nominal 5~10 (Washer)

H-PVC (Hard Polyvinyl Chloride)

	Product Code	Shape	Size	Material	Heat-Resistance Temperature	Characteristics
	SPVC-H	Hexagon Head Bolt	M4~M6	H-PVC (Hard Polyvinyl Chloride)	-10°C~35°C	Chemical Resistance
	SPVC-N/SPVC-W	Hexagon Nut/Washer	M4~M6 (Hexagon Nut), Nominal 4~6 (Washer)	H-PVC (Hard Polyvinyl Chloride)	-10°C~35°C	Chemical Resistance

PP (Polypropylene)

	Product Code	Shape	Size	Material	Heat-Resistance Temperature	Characteristics
	SPP-H	Hexagon Head Bolt	M4~M12	PP (Polypropylene)	65°C (UL Standard 94:HB)	Chemical Resistance
	SPP-N/SPP-W	Hexagon Nut/Washer	M4~M12 (Hexagon Nut), Nominal 4~12 (Washer)	PP (Polypropylene)	65°C (UL Standard 94:HB)	Chemical Resistance

PEEK (Polyetheretherketone)

Product Code	Shape	Size	Material	Heat-Resistance Temperature	Characteristics
SPE-P	Cross Recessed Pan Head Machine Screws	M1.7~M8	PEEK (Polyetheretherketone)	180ºC (UL Standard 94 V-0)	Chemical Resistance
SPE-F	Cross Recessed Flat Head Machine Screws	M2~M8
SPE-H	Hexagon Head Bolt	M4~M12
SPE-T	Hexagon Socket Set Screw	M3~M8
SPE-C	Socket Head Cap Screw	M3~M8
SPE-FT	Socket Head Cap Screw	M3~M8			Full Thread Chemical Resistance
SPE-SH	Screws with Extra Low Head	M3~M6			Chemical Resistance
SPE-LH	Screws with Low Head	M3~M6
SPE-N/SPE-W	Hexagon Nut/Washer	M2~M12 (Hexagon Nut), Nominal 3~12 (Washer)
SPE-SN	Spacer Nut	M3～M5
SPE-R	Hexagon Socket Taper Screw Plug/ Bar	R1/8~R3/8 (Hexagon Socket Taper Screw Plug), Dia.6~20 (Polyetheretherketone)

Screws with Special Surface Treatment

	Product Code	Shape	Surface Treatment	Size	Material	Characteristics
	SNSS-RY	Socket Head Cap Screws	Raydent Treatment	M3~M10	SUSXM7 (SUS304 Equivalent)	Seizing Prevention, Chemical Resistance, Reflection Resistant
	SNSS-TF	Socket Head Cap Screws	Teflon Coating	M3~M10	SUSXM7 (SUS304 Equivalent)	Chemical Resistance, Seizing Prevention