Technical Reference

Monofilament Netting & Line Data Tables

Atlantic & Gulf Fishing Supply Corp. technical specifications for commercial longline mainlines, leader materials, and monofilament netting conversions.

Monofilament Diameter / Pound Test / Yardage Conversion Table

Diameter (mm)	Diameter (Inches)	Break Test Rating (lb)	Approx. Yards / lb Spool	Primary Commercial Use
0.80 mm	0.031"	80 lb	1150 yds	Light branch lines & leaders
1.00 mm	0.039"	100 lb	780 yds	Light branch lines & leaders
1.20 mm	0.047"	150 lb	540 yds	Light branch lines & leaders
1.50 mm	0.059"	200 lb	350 yds	Heavy tuna branch lines
1.80 mm	0.071"	300 lb	240 yds	Heavy tuna branch lines
2.00 mm	0.079"	400 lb	195 yds	Heavy tuna branch lines
2.50 mm	0.098"	500 lb	125 yds	Commercial mainline & heavy buoy line
3.00 mm	0.118"	700 lb	85 yds	Commercial mainline & heavy buoy line
3.50 mm	0.138"	900 lb	62 yds	Commercial mainline & heavy buoy line
4.00 mm	0.157"	1200 lb	47 yds	Commercial mainline & heavy buoy line
4.50 mm	0.177"	1500 lb	36 yds	Commercial mainline & heavy buoy line
5.00 mm	0.197"	1800 lb	28 yds	Commercial mainline & heavy buoy line
6.00 mm	0.236"	2500 lb	19 yds	Commercial mainline & heavy buoy line

Monofilament Netting Conversion Notes

Monofilament mesh size measurements are expressed as stretched mesh (center of knot to center of knot). Depth is given in number of meshes, and length is specified in fathoms or yards when stretched.

1 Fathom = 6 Feet (1.8288 Meters)
Stretched Mesh = 2 x Square Mesh Size
Tensile strength decreases ~10% after prolonged UV exposure without treatment

Spool & Reel Spooling Guidance

When spooling high-diameter monofilament onto commercial longline reels, maintain steady tension (approx 15-20% of break rating) to avoid line binding under deep-water drag.

Questions on custom spooling or line selection? Call our technical desk in Miami at 1-800-327-6830.