Plastic Screw Characteristics

Plastic Screw Abbreviations, Names, and Maximum Temperatures

Abbreviation	Name	Maximum Temperature
PEEK^*	Polyetheretherketone	180°C (UL Approved Temperature)
PPS	Polyphenylene Sulfide	200°C (UL Approved Temperature)
AURUM^*	Aurum	240°C (UL Approved Temperature)
PTFE	Tetrafluoroethylene	180°C (UL Approved Temperature)
H-PVC	Hard Polyvinyl Chloride	-10°C~35°C (Temperature Range)
RENY^*	50% Glass Fiber Reinforced Polyamide MXD6	105°C (UL Approved Temperature)
PC	Polycarbonate	115°C (UL Approved Temperature)
PP	Polypropylene	65°C (UL Approved Temperature)
PVDF	Polyvinylidene Fluoride	-40°C~90°C (Temperature Range)

•The values listed above are for reference only; the temperature ranges will vary according to tightening torque.
*PEEK is a registered trademark of Vitre^TM.
AURUM is a registered trademark of Mitsui Chemicals, Inc.
RENY is a registered trademark of Mitsubishi Engineering-Plastics Corporation.

Plastic Screw Selection Index

Strength	RENY>PPS>PEEK>AURUM>PC>PVDF>PP>H-PVC>PTFE	See chart for Tensile Breaking Force
Heat Resistivity	AURUM>PPS>PEEK/PTFE>PC>RENY>PVDF>PP>H-PVC	See chart above
Chemical Resistivity	PTFE>PVDF>H-PVC/PP>PEEK/AURUM>PPS>PC>RENY	See chart for Chemical Resistivity

Plastic Screws comply with JIS and ISO standards, however due to differences in manufacturing processes specifications may vary slightly from that of metal screws.
Mechanical property values in the charts are for reference only. Values may vary in performance conditions.
Use the Torque Driver or Torque Wrench to tighten screws.
Chemical Resistance values will vary according to usage conditions. Plastic Screws should be tested under actual performance conditions prior to use.
Colors of small screws, bolts, nuts, and washers may vary slightly by production lot.
PEEK and AURUM Screws fall into list of designated-items known as dual use materials. When exporting these products, observe "Catch-All Controls" and other relative foreign trade laws and regulations.

Properties

	Test Method (ASTM)	Unit	PEEK	PPS	AURUM	PTFE	RENY	PC	PP
Tensile Strength	D638	MPa	91	196	92	27~35	285	62	36
Tensile Elongation	D638	%	50~120	2.2	90	250~400	2.1	110	500
Flexural Strength	D790	MPa	147	255	137	-	380	88.2	-
Flexural Modulus	D790	GPa	3.9	13.2	2.9	0.55	17.4	2.3	1.5
Izot Impact, Notched	D256	J/m	88	98	88	160	110	880	30
Rockwell Hardness	D785	R/M Scale	R126	M100	R129	-	M111	R120	R100
Deflection Temp under load (1.82MPa)	D648	°C	152	270	238	55	234	135	120
Flame Class	UL94	-	V-0	V-0	V-0	V-0	HB	V-2	HB
Dielectric Constant (10⁶Hz)	D150	-	3.3	4.6	3.1	<2.1	4.0	2.9	-
Dielectric Loss Tangent (10⁶Hz)	D150	-	0.004	0.002	0.0034	<0.0002	0.009	0.009	-
Volume Resistivity (×10¹⁶)	D257	Ω·cm	4.9	1.0	10³~10⁴	>100	1.3	4.0	1.0
Dielectric Breakdown Strength	D149	MV/mm	17	12	-	6~10	32	16	31
Arc Resistance	D495	sec	23	120	81	>300	129	120	-
Specific Gravity	D792	-	1.30	1.66	1.33	2.14~2.2	1.65	1.20	0.91
Water Absorption (Dip 24hx20°C)	D570	%	0.500	0.015	0.34	<0.010	0.140	0.150	0.010
Glass Fiber Content	-	%	-	40	-	-	50	-	-

•The numerical values listed above are for reference only; they are not guaranteed under performance conditions.

Properties

	Test Method (JIS)	Unit	H-PVC
Tensile Strength	JIS K 6723　　　　　　　　　　Test Rate: 200mm/min	MPa	26
Tensile Elongation	JIS K 6723　　　　　　　　　　Test Rate: 200mm/min	%	200
Hardness	JIS K 6253 10sec.　　　　　(2mm thick, 3 pieces)	Hs	98
100% Modulus	JIS K 6723　　　　　　　　　　Test Rate: 200mm/min	MPa	20
Low Temp. Resistance	JIS K 6723	°C	10
Specific Gravity	JIS K 7112　　　　　　　　　　A-Method	-	1.32

•The numerical values listed above are for reference only; they are not guaranteed under performance conditions.

Chemical Resistance

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

Plastic Screw Tensile Breaking Force (N)

	PEEK	PPS	AURUM	PTFE	H-PVC	RENY	PC	PP	PVDF
M1.7	59	-	-	-	-	80	47	-	-
M2	160	236	-	-	-	303	112	-	-
M2.6	312	440	-	-	-	588	227	-	-
M3	430	570	420	45	-	635	300	-	-
M4	765	980	740	79	140	1470	515	270	-
M5	1230	1570	1170	128	270	2450	750	440	640
M6	1670	2250	1680	181	455	3140	1080	620	940
M8	3090	3720	3330	329	-	5100	1470	1100	1810
M10	4900	5890	-	522	-	6900	3140	1800	2700
M12	7360	7850	-	759	-	8700	4710	2400	-
M16	-	-	-	-	-	18000	-	-	-

•The numerical values listed above are for reference only; they are not guaranteed under performance conditions.

Plastic Screw Torsional Breaking Torque (N·m)

	PEEK	PPS	AURUM	RENY	PC	PP	PVDF
M1.7	0.02	-	-	0.03	0.02	-	-
M2	0.06	0.08	-	0.1	0.05	-	-
M2.6	0.16	0.19	-	0.24	0.12	-	-
M3	0.3	0.36	0.25	0.39	0.22	-	-
M4	0.64	0.71	0.52	0.79	0.54	0.23	-
M5	1.28	1.42	1.26	1.77	1.03	0.51	0.64
M6	2.26	2.11	1.89	2.94	1.37	0.8	0.88
M8	5.98	5.29	5	7.85	2.94	2.2	2.65
M10	10.8	11.8	-	12.75	5.9	3.4	3.9
M12	18.6	20.6	-	24.5	10.3	5.3	-
M16	-	-	-	39	-	-	-

•The numerical values listed above are for reference only; they are not guaranteed under performance conditions. The recommended torque is 50% of the numerical values listed above.