Lockstitch & Chainstitch Classes 301 / 401

Class 301 Seam Length cm

Class 301 Consumption Factor ×

Class 401 Seam Length cm

Class 401 Consumption Factor ×

Overedge & Safety Classes 504 / 516

Class 504 Seam Length cm

Class 504 Consumption Factor ×

Class 516 Seam Length cm

Class 516 Consumption Factor ×

Allowance & Thread Planning

Wastage Allowance %

Thread Linear Density tex

Thread per Garment

— m

All stitch classes including the wastage allowance

By Stitch Class

Class 301 Thread: — m
Class 401 Thread: — m
Class 504 Thread: — m
Class 516 Thread: — m
Thread Before Wastage: — m
Thread Weight per Garment: — g

Consumption factors move with seam thickness, stitch density and needle-to-looper thread balance, so the defaults are a starting point rather than a specification. Unwind a measured seam on your own machines and fit the factors before costing a large order.

Thread Consumption by Stitch Class (ISO 4915) Matrix — free, with the formula and a worked example, at Textile School.