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Nomex & Kevlar Facts

Nomex® & Kevlar® Technical Information

Both Kevlar and Nomex are available in filament or spun threads. John Howard Company can recommend the proper thread type and size for any end use. Our thread is approved by the Federal Government to supply Kevlar under Federal Specifications A-A-55220 (Filament) and A-A-55195 (Spun), Nomex under A-A-50195 (Filament) and A-A-55217 (Spun).
Twisted Multifilament Nomex®  A-A-50195
Tex Min. yards/pound Min. Breaking Strength
40 9,000 3 lbs.
60 6,000 5
80 4,500 6
120 3,000 10
180 2,000 15
240 1,500 20
300 1,200 25
350 1,000 30
450 850 35
Twisted Kevlar® A-A-55220
Tex Min. yards/Pound Min. Breaking Strength
40 10,000 14 lbs.
60 6,700 23
80 5,000 30
120 3,350 45
210 2,100 64
400 1,050 135
450 900 150
800 550 225
Spun Kevlar® A-A-55195
Tex Min. yards/Pound Min. Breaking Strength
39 11,970 6.0 lbs.
59 7,980 8.5
78 5,700 12
98 4,560 16
118 3,990 19
138 3,420 22

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