Page 201 - b.safe catalog

Bottle Threads GL Threads
. round threads at the flanks
. high pitch
. large flanks for important carrying power . GL thread one-start thread
. GLS 80 thread three-start thread
GPI
. GPI = Glass Packaging Institute, trade association representing the North American glass container industry
Example:
GL 45 – O. D. = 45 mm
Pitch 4,0 mm
Example:
GPI 38-400 – O. D. = 37 mm
O. D.
O. D.
. voluntary standards for compatibility of glass containers and closures
b.safe TECHNICAL INFORMATION 169
Pitch
Pitch
Measurement chart
O. D. mm
45,0 37,0 31,8 27,3 19,7 14,0
Pitch 4,25 mm
80,0
37,0
32,0
31,8
25,0
18,0
12,0
GL 12
GL 14
GL 18
GPI 20/400**
GL 25
GL 45
GL 32
GPI 38/430*
GPI 38/400**
GPI 33/430*
GPI 33/400**
GPI 28/400**
GLS 80
2,0
2,5
3,0
3,2 3,5
4,0 4,25
15,0
Pitch in mm
* high form of cap ** low form of cap