Lapped Seams

Seams in which Two or More Plies of Fabric are Superimposed and/or Folded on Each Other

Click to Download the Diagram Seam Class Needle Count Typical Uses and Stitch Types
LSa 1 or 2 Overlap seam of two plies at edges using 100cl, 300cl, or 400cl
LSb 1 or 2 Overlap seam of two plies with one edge folded using 100cl, 300cl, or 400cl
LSc 1, 2 or 3 Flat Felled Seam using 100cl, 300cl, or 400cl

Attachment
LSd 1 or 2 Seaming of two plies where one ply is folded and set in the middle of the other using 100cl, 300cl, or 400cl
LSe 1 or 2 Seaming Three plies with finished edges where two plies lay in one direction (Yoke stitch) using 100cl, 300cl, or 400cl
LSf 1 Seaming Three plies with finished edges where two plies lay in one direction (Yoke stitch) using 100cl, 300cl, or 400cl
LSg 2 Seaming three plies with finished edges (Shirt Placket) 100cl, 300cl,or 400cl
LSj 2 Seaming three plies with finished edges and interfacing (Shirt Placket) 100cl, 300cl,or 400cl
LSk 2 Seaming two plies with finished edges (simple Shirt Placket) 100cl, 300cl,or 400cl
LSl 2 Seaming three plies with finished edges 100cl, 300cl, or 400cl
LSm 2 Seaming two plies with finished edges and interfacing (simple Shirt Placket) using 100cl, 300cl, or 400cl
LSn 1 or 2 Two plies clean finished folded and bound using 100cl, 300cl, or 400cl
LSp 2 Seaming three plies using 100cl, 300cl, or 400cl
LSq 2 Seaming two plies using 100cl, 300cl, or 400cl
LSr 2 Seaming two plies using 100cl, 300cl, or 400cl
LSs 2 Seaming two plies in two steps using 100cl, 300cl, or 400cl
LSt 2 Seaming three plies using 100cl, 300cl, or 400cl
LSu 2 Seaming three plies where one binds the other two behind the face 100cl, 300cl, or 400cl
LSv 1 or 2 Seaming two plies where face binds the second ply using 100cl, 300cl, or 400cl
LSw 4 Seaming four plies where one ply wraps around two facing plies, bound to another ply using 100cl, 300cl, or 400cl
LSx 2 Seaming three plies with raw edges in two passes using 100cl, 300cl, or 400cl
LSy 2 Seaming three plies with clean finish edges in two passes using 100cl, 300cl, or 400cl
LSz 3 Seaming three plies using 100cl, 300cl, or 400cl
LSaa 3 Seaming three plies with raw edges using 100cl, 300cl, or 400cl
LSab 3 Seaming three plies with clean finish using 100cl, 300cl, or 400cl
LSac 2 Seaming three plies bound with raw edges using 100cl, 300cl, or 400cl
LSad 2+ Seaming three plies bound with raw edges using 100cl, 300cl, or 400cl
LSae 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
"Stitched Pleat"
LSaf 2 Seaming two plies using 100cl, 300cl, or 400cl
LSag 2 Seaming two plies clean finish using 100cl, 300cl, or 400cl
LSah 1 or 2 Seaming two plies using 100cl, 300cl, or 400cl and ribbon or tape
LSaj 1 or 2 Seaming three plies clean finish using 100cl, 300cl, or 400cl
LSak 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LSal 2 Seaming two plies as a placket using 100cl, 300cl, or 400cl
LSam 2 Seaming three plies as a placket with interfacing using 100cl, 300cl, or 400cl
LSan 2 Seaming two plies as a placket with interfacing using 100cl, 300cl, or 400cl
LSap 1 or 2 Seaming two plies clean finish using 100cl, 300cl, or 400cl
LSaq 1 or 2 Seaming two plies clean finish using 100cl, 300cl, or 400cl
LSar 1 or 2 Seaming four plies using 100cl, 300cl, or 400cl
LSas 2 Seaming two plies using 100cl, 300cl, or 400cl
LSat 2 Seaming two plies with seam tape using 100cl, 300cl, or 400cl and two rows of ribbon or tape
LSau 2 Seaming three plies using 100cl, 300cl, or 400cl and ribbon or tape
LSav 4 Seaming three plies using 100cl, 300cl, or 400cl and ribbon or tape
LSaw 3 Seaming two plies in three passes using 100cl, 300cl, or 400cl
LSay 4 Seaming three plies using 100cl, 300cl, or 400cl
LSaz 4 Seaming three plies with raw edges using 100cl, 300cl, or 400cl
LSbb 4 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LSbc 2 Seaming three plies using 100cl, 300cl, or 400cl
LSbd 2 Seaming four plies in two passes using 100cl, 300cl, or 400cl
LSbe 2 Seaming four plies in two passes using 100cl, 300cl, or 400cl
> LSbf 2 Seaming two plies clean finish using 100cl, 300cl, or 400cl
LSbg 1 or 2 Seaming two plies using 100cl, 300cl, or 400cl
LSbh 1 or 2 Seaming three plies using 100cl, 300cl, or 400cl
LSbj 1 or 2 Seaming two plies using 100cl, 300cl, or 400cl
LSbk 2 Seaming two plies using 100cl, 300cl, or 400cl
LSbl 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LSbm 3 or 4 Seaming two plies in three passes using two of 100cl, 300cl,
or 400cl and one 500cl stitch
Sometimes known as "mock felling"
LSbn 2 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LSbo 3 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LSbp 2 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LSbq 2 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LSbr 3 Seaming three plies in three passes using 100cl, 300cl, or 400cl
LSbs 1 or 2 Seaming four plies with raw edges using 100cl, 300cl, or 400cl w/ribbon or tape
LSbt 2 Seaming three plies in two passes using 100cl, 300cl, or 400cl with ribbon or tape
LSbu 2 Seaming two plies using 100cl, 300cl, or 400cl with ribbon or tape
LSbv 3 Seaming three plies in three passes using 100cl, 300cl, or 400cl
LSbw 3 Seaming four plies in three passes using 100cl, 300cl, or 400cl
LSbx 3 Seaming three plies in three passes using 100cl, 300cl, or 400cl
LSby 2 Seaming two plies using 100cl, 300cl, or 400cl
LSbz 3 Seaming two plies in three passes using 100cl, 300cl, or 400cl
LSca 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LScb 2 Seaming five plies in two passes using 100cl, 300cl, or 400cl
LScc 2 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LScd 3 Seaming four plies in three passes using 100cl, 300cl, or 400cl
LSce 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LScf 2 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LScg 2 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LSch 2 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LScj 3 Seaming three plies in three passes using 100cl, 300cl, or 400cl
LSck 3 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LScl 3 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LScm 3 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LScn 3 Seaming three plies in two or three passes using 100cl, 300cl, or 400cl
LSco 4 Seaming three plies in three passes using 100cl, 300cl, or 400cl
LScp 4 Seaming three plies in three passes using 100cl, 300cl, or 400cl
LScq 4 Seaming three plies in three passes using 100cl, 300cl, or 400cl
LScr 4 Seaming three plies in three passes using 100cl, 300cl, or 400cl
LScs 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LSct 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LScu 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LScw 3 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LScx 3 Seaming three plies in two passes using 100cl, 300cl, or 400cl
LScy 3 Seaming three plies in two passes using 100cl, 300cl, or 400cl with ribbon
LScz 2 Seaming seven plies in two passes using 100cl, 300cl, or 400cl
LSda 2 Seaming two plies using 100cl, 300cl, or 400cl
LSdb 2 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LSdc 3 Seaming two plies in two passes using 100cl, 300cl, or 400cl
LSdd 2 Seaming three plies using 100cl, 300cl, or 400cl with interlining