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Specifications

Nylon fasteners are favoured especially in such applications, where the properties of their material, i.e. electrical insulation, corrosion resistance, lightweight, wear resistance and colour matching are of greater importance than high tensile holding strength. Since their technical properties vary from the material they are moulded from, only general suggestions and hints can be given.

To establish the range of advantages for nylon fasteners in a specific application, it is suggested that customers carry out their own tests, for which samples will be supplied on request.

More technical information is available on request, based on the experience of countless applications.

Applications - Fasteners, bushings, hole plugs, washers, spacers, hose & cable.

MECHANICAL TEST DATA FOR NYLON BOLTS AND SET SCREWS

			TENSILE TEST MAX TORQUE		DOUBLE SHEAR
SIZE	ULTIMATE TORQUE	BEFORE DEFORMATION	YIELD LBS.	BREAK LBS.	YIELD LBS.	BREAK LBS.
M2 x .4	NO TEST	NO TEST	7.12 N.	N/B	89 N.	116 N.
M2.5 x 45	NO TEST	NO TEST	8.9 N.	N/B	156 N.	169 N.
M3 x .5	.32 Nm.	.2-.26 Nm.	22 N.	N/B	294 N.	329 N.
M3.5 x .6	.43 Nm.	.28-.34 Nm.	53 N.	N/B	378 N.	405 N.
M4 x .7	.45 Nm.	.36-.43 Nm.	214 N.	N/B	600 N.	636 N.
M5 x .8	.93 Nm.	.73-.79 Nm.	271 N.	N/B	1081 N.	1134 N.
M6 x .1	1.83 Nm.	1.41-1.47 Nm.	845 N.	912 N.	1806 N.	1877 N.
M8 x 1.25	3.39 Nm.	2.45-2.82 Nm.	1.677 N.	1744 N.	2980 N.	3034 N.
M10 x 150	5.31 Nm.	4.52-4.86 Nm.	2749 N.	N/B	5026 N.	5280 N.

MATERIALS PROPERTY GUIDE

	NYLON 6 & 66	POLYPROPYLENE	H.D.P.E.	THERMOPLASTIC RUBBER	SILICONE RUBBER
Specific gravity	1.14	0.905	0.947 - 0.965	0.97 - 0.98	1.10 - 1.14
Tensile strength P.S.I.	8,700-13,000	3,900 -5,000	3,100 - 4500	980 - 1100	1.230 -1.250
Elongation %	50 - 200	50- 600	10 - 150	375 - 390	300 - 800
Melting Point ºC	265	180
Minimum ºC	-40	-25	-65	-40	-60
Max. - Continuous ºC	80	110	60	150	200
Max. - intermittent ºC	170	120	90	190	300
Effect of weak acids	not resistant	no effect	no effect	excellent resistance	resistant
Effect of strong acids	attacked	attacked	attacked	resistant	resistant
Effect of weak Alkalis	slightly resistant	no effect	no effect	excellent resistance	resistant
Effect of strong Alkalis	attacked	no effect	no effect	very resistant	resistant
Effect of Organic solvents	resists most	unaffected below 80ºC	unaffected below 80ºC	attacked by some	resistant
Effect of Oils & greases	resistant	attacked by some	limited resistance	attacked by some	attacked by some
Effect of Sunlight	discolours slightly	crazes if un-protected	crazes if un-protected	very resistant	very resistant

POLYPROPYLENE

APPLICATIONS

Polypropylene fasteners are favoured especially in such applications, where the properties of their material, i.e. electrical insulation, corrosion resistance, lightweight, no moisture absorption, will not creep or deform, and has good dimensional stability and is resistant to certain chemicals.

You will find that polypropylene is used in various applications, here are a few examples:-

Appliances, House wares, Toys, Caps and closures, Technical components, medical items, Bottles and Pipes

*THE BASIC INFORMATION GIVEN IS FOR GUIDANCE ONLY AND SHOULD NOT BE USED TO ESTABLISH SPECIFICATION LIMITS.

Grade	7075	7075	6101	2030	5754
Heat Treatment	T6	T73	T8	T4	H24
Surface finish	OAI	OABIC	BRUT	BRUT	DG
	clear anodised	Potassium
	colour anodised	bichromate	unfinished	unfinished	de-greased
Tensile strength	530 (N/mm²)	490 (N/mm²)	270 (N/mm²)
Yield strength	460 (N/mm²)	420 (N/mm²)	240 (N/mm²)
Elongation	7%	11%	6%
Hardness	160 / 185	146 / 169	95 / 105
Modulus of elasticity	72000 (N/mm²)	72000 (N/mm²)	67000 (N/mm²)

ADVANTAGES OF TITANIUM
HIGHLY RESISTANT TO CORROSION
GOOD MECHANICAL RESISTANCE
LOW THERMAL EXPANSION COEFFICIENT
LIGHTER (40%) AND STRONGER THAN 316 STAINLESS STEEL

NO ADVERSE REACTIONS WITH OTHER METALS

APPLICATIONS
PETROCHEMICAL INDUSTRY - OILRIGS, CHEMICAL BATHS
AEROSPACE INDUSTRY
AUTOMOTIVE - FORMULA 1 AND WORLD SUPERBIKES
LEISURE INDUSTRY - YACHTING AND CYCLING
MEDICAL - IMPLANTS, PINS AND MICROSCREWS

GRADE 2 & 5 DIN 912 AND 933 HEADS FORGED WITH THREADS ROLLED & MACHINED

TORQUE SETTINGS FOR BOLTS IN TENSION
(for bolts in shear reduce values by (30-40%)
	Torque for non-lubricated threads		Torque for Lubricated threads
	MINIMUN	MAXIMUM	MINIMUM	MAXIMUM
M5	2.8 Nm	3.4 Nm	2.5 Nm	3.00 Nm
M6	9.00 Nm	11.00 Nm	12.00 Nm	14.10 Nm
M8	13.00 Nm	16.00 Nm	12.00 Nm	14.10 Nm
M10 x 1.25	22.00 Nm	28.00 Nm	20.00 Nm	25.00 Nm
M10 x 1.5	17.00 Nm	20.00 Nm	15.50 Nm	16.00 Nm

	GRADE 2				GRADE 5 (6AI-4V)
	Commercially Pure				Alpha-Beta Alloy
Chemical Composition (% Max.)	0.10C				0.08C
	0.30Fe				0.25Fe
	0.03N				0.05N
	0.25O				0.20O
	0.01H				5.5-6.75AI
	Bal. Ti				3.5-4.5V
					0.01H
					Bal. Ti
Wrought Tensile Properties	Rm. Temp	600ºF	800ºF	1000ºF	Rm. Temp	600ºF	800ºF	1000ºF
State	Annealed				Annealed
Ultimate Strength (psi)	50000	30000	26000	19000	130000	100000	90000	70000
Yield Strength (psi) .2% offset	40000	18000	15000	11000	120000	90000	75000	60000
Elongation in 2" (%)	20	37	25	32	10	17	18	30
Reduction in Area (%)	30	70-80	70-80	70-80	25	52	53	68
Physical Properties
Density (lbs.cu.in.)	0.163				0.163
Beta Transus (°F) approx	1675				1830
Melting Point (°F) approx	3020				3200
Thermal Conductivity (Btu/hr./sq.ft.F/ft)@R.T.	9.5				3.9
Coefficient of Thermal Expansion (32° to)	212°F	600°F	1000°F	1200°F	212°F	600°F	1000°F	1200°F
(10 / °F) Linear	4.8	5.1	5.4	5.6	5	5.3	5.6	5.9
Specific Heat@R.T. (Btu/lb./F)	0.124				0.135
Modulus of Elasticity (10 psi)	14.9				16.5
Modulus of Rigidity (10 psi)	6.5				6.1
Electrical resistance (Microhms cm)	56				171

*THE BASIC INFORMATION GIVEN IS FOR GUIDANCE ONLY AND SHOULD NOT BE USED TO ESTABLISH SPECIFICATION LIMITS.