Looks like cotton thread. Actually Nomex or Kevlar wrapped in cotton. Does not melt. Decomposes at 700F.
Use fire retardant Nomex (tm) and Kevlar (tm) for sewing seams and attaching patches to clothing and gear used by first responders, motor sports participants, and others who need protection from fire and heat. It has a flat, cotton-like finish, and meets NFPA standards: 1975-1999, 1971-1997, 1976-1992, and 1977-1998.

New ! All Groz-Beckert Machine Needles and C.S. Osborne Hand Sewing Needle Kits

Information
Code Color Description
fire-retardant-sewing-thread-small-spools Fire Retardant Sewing Thread - Small Spools
Fire retardant sewing thread on low cost spools weighing two ounces or less 		Select
FRS027PURPg Fire Retardant Sewing Thread - Tex 27 - Purple
Lightweight Spun Nomex, Tex 27 - Purple - Decomposes at 700F. Does not melt. 		Select
FRS027RED1 Fire Retardant Sewing Thread - Tex 27 - Red
Lightweight Spun Nomex, Tex 27 - Red - Decomposes at 700F. Does not melt. 		Select
FRS035BLUR Fire Retardant Sewing Thread - Tex 35 - Royal Blue
Lightweight Spun Nomex, Tex 35 - Royal Blue - Decomposes at 700F. Does not melt. 		Select
FRS035GREOn Fire Retardant Sewing Thread - Tex 35 - Olive
Lightweight Spun Nomex, Tex 35 - Royal Blue - Decomposes at 700F. Does not melt. 		Select
FRS035GRESk Fire Retardant Sewing Thread - Tex 35 - Sage Green
Lightweight Spun Kevlar, Tex 35 - Sage Green - Decomposes at 700F. Does not melt. 		Select
FRS035YEL3n Fire Retardant Sewing Thread - Tex 35 - Yellow
Lightweight Spun Nomex, Tex 35 - Yellow - Decomposes at 700F. Does not melt. 		Select
FRS040BLUR Fire Retardant Sewing Thread - Tex 40 - Royal Blue Select
FRS040BRO1 Fire Retardant Sewing Thread - Tex 40 - Chocolate
Middleweight Spun Nomex, Tex 40 - Chocolate - Decomposes at 700F. Does not melt. 		Select
FRS040BROCng Fire Retardant Sewing Thread - Tex 40 - Chocolate
Middleweight Spun Nomex, Tex 40 - Chocolate - Decomposes at 700F. Does not melt. 		Select
FRS040BROG Fire Retardant Sewing Thread - Tex 40 - Gold Brown
Middleweight Spun Nomex, Tex 40 - Gold Brown - Decomposes at 700F. Does not melt. 		Select
FRS040GREC Fire Retardant Sewing Thread - Tex 40 - Camouflage Green
Middleweight Spun Nomex, Tex 40 - Camouflage Green - Decomposes at 700F. Does not melt. 		Select
FRS040ORAA Fire Retardant Sewing Thread - Tex 40 - Chinese Rust
Middleweight Spun Nomex, Tex 40 - Chinese Rust - Decomposes at 700F. Does not melt. 		Select
FRS040REDP Fire Retardant Sewing Thread - Tex 40 -
Middleweight Spun Nomex, Tex 40 - - Decomposes at 700F. Does not melt. 		Select
FRS040REDQng Fire Retardant Sewing Thread - Tex 40 - Raspberry
Middleweight Spun Nomex, Tex 40 - Raspberry - Decomposes at 700F. Does not melt. 		Select
FRS0501BLAC Fire Retardant Sewing Thread - Tex 50 - Black
Middleweight Spun Kevlar, Tex 50 - Black - Decomposes at 700F. Does not melt. 		Select
FRS0501WHIN Fire Retardant Sewing Thread - Tex 50 - White
Middleweight Spun Nomex, Tex 50 - White - Decomposes at 700F. Does not melt. 		Select
FRS050BRO1 Fire Retardant Sewing Thread - Tex 50 - Brown
Middleweight Spun Kevlar, Tex 50 - Brown - Decomposes at 700F. Does not melt. 		Select
FRS050BROK Fire Retardant Sewing Thread - Tex 50 - Star Khaki
Middleweight Spun Kevlar, Tex 50 - Star Khaki - Decomposes at 700F. Does not melt. 		Select
FRS050GRA1 Fire Retardant Sewing Thread - Tex 50 - Gray
Middleweight Spun Kevlar, Tex 50 - Gray - Decomposes at 700F. Does not melt. 		Select
FRS050GREF Fire Retardant Sewing Thread - Tex 50 - Federal Green
Middleweight Spun Kevlar, Tex 50 - Federal Green - Decomposes at 700F. Does not melt. 		Select
FRS050ORA1 Fire Retardant Sewing Thread - Tex 50 - Orange
Middleweight Spun Nomex, Tex 50 - Orange - Decomposes at 700F. Does not melt. 		Select
FRS050REDR Fire Retardant Sewing Thread - Tex 50 - Rubystone
Middleweight Spun Nomex, Tex 50 - Rubystone - Decomposes at 700F. Does not melt. 		Select
FRS050REDS Fire Retardant Sewing Thread - Tex 50 - Scarlet
Middleweight Spun Kevlar, Tex 50 - Scarlet - Decomposes at 700F. Does not melt. 		Select
FRS050YEL1 Fire Retardant Sewing Thread - Tex 50 - Yellow
Middleweight Spun Kevlar, Tex 50 - Yellow - Decomposes at 700F. Does not melt. 		Select
FRS060GREX Fire Retardant Sewing Thread - Tex 60 - Foliage Green
SPECIAL 12 Oz Spool $30 - Heavyweight Spun Nomex, Tex 60 - Foliage Green - Decomposes at 700F. Does not melt. 		Select
FRS060ORA2 Fire Retardant Sewing Thread - Tex 60 - Orange
Heavyweight Spun Nomex, Tex 60 - Orange - Decomposes at 700F. Does not melt. 		Select
FRS060RED3 Fire Retardant Sewing Thread - Tex 60 - Wine
Heavyweight Spun Nomex, Tex 60 - Wine - Decomposes at 700F. Does not melt. 		Select
FRS070PUR9 Fire Retardant Sewing Thread - Tex 70 - Blue Tint Purple
Heavyweight Spun Nomex, Tex 70 - Blue Tint Purple - Decomposes at 700F. Does not melt. 		Select
FRS070YEL1 Fire Retardant Sewing Thread - Tex 70 - Yellow
Heavyweight Spun Kevlar, Tex 70 - Yellow - Decomposes at 700F. Does not melt. 		Select
FRS0901BLAC Fire Retardant Sewing Thread - Tex 90 - Black
Heavyweight Spun Kevlar, Tex 90 - Black - Decomposes at 700F. Does not melt. 		Select
FRS0901WHIN Fire Retardant Sewing Thread - Tex 90 - White
Heavyweight Spun Nomex, Tex 90 - White - Decomposes at 700F. Does not melt. 		Select
FRS090RED3 Fire Retardant Sewing Thread - Tex 90 - Fire Red
Heavyweight Spun Nomex, Tex 90 - Fire Red - Decomposes at 700F. Does not melt. 		Select
FRS1051BLAC Fire Retardant Sewing Thread - Tex 105 - Black
Heavyweight Spun Kevlar, Tex 105 - Black - Decomposes at 700F. Does not melt. 		Select
FRS105YEL1 Fire Retardant Sewing Thread - Tex 105 - Yellow
Heavyweight Spun Kevlar, Tex 105 - Yellow - Decomposes at 700F. Does not melt. 		Select
FRS1351BLAC Fire Retardant Sewing Thread - Tex 135 - Black
Heavyweight Spun Kevlar, Tex 135 - Black - Decomposes at 700F. Does not melt. 		Select
Untitled 5

Related Products 

Fire Retardant Sewing Thread


Spun Kevlar and Nomex used for sewing and attaching patches. Feels like cotton.

FR Embroidery Thread and Bobbins

Nomex thread and bobbins that look and sew like embroidery thread. Use for patches and emblems.

Nomex Thread


Closeout. Mostly white and green tint. Alternative to FR sewing thread.

Kevlar Thread

 
Stronger than sewing thread and more fire retardant. Only comes in yellow.

Thread Sock

 Astre Net (Thread Sock) - Expandable Netting - Yellow - By The Yard
Thread Sock, is a netting that helps to prevent thread from puddling or 'bird-nesting' on the bottom of the spool. It is not fire retardant, but, is great for storage.

Hand Stitching Tubes


These tubes have about 100 yards of thread and come in many sizes and colors. Available in nylon, polyester, and Kevlar.

Needles

Waxed Thread - Size 554 (0.05") - Yellow - Polyester - 70 Yards - Tube"
Machine needles in a wide variety of systems and sizes.

Cotton Thread

American Colors - Robison-Anton Polyester Embroidery Thread - 3 Mini Spools for $4
Cotton thread as a lower heat resistance. It chars, but it does not melt.