20-400
What is the specification type for 20-400?
For 20-400, specification type is neck_finish; description is 20 mm neck, 400 series (1 thread turn); primary dimension is T max 19.89 mm, T min 19.48 mm; secondary dimension is E max 17.75 mm, E min 17.35 mm; equivalence or compatibility note is 1 Thread turn; additional data is 400H max 9.08 mm, 400H min 9.04 mm; S max 1.32 mm, S min 0.56 mm; I min 10.26 mm; 8 threads/in, recorded from its source on 2026-08-12; source re-checked 2026-09-17.
20 | 19.89 | 19.48 | 17.75 | 17.35 | 9.08 | 9.04 | 14.45 | 13.69 | 19.23 | 18.46 | 1.32 | 0.56 | 10.26 | 8
— contapack.com.au, retrieved 2026-08-12
- Specification ID
- 20-400
- Specification type
- neck_finish our reading
- Description
- 20 mm neck, 400 series (1 thread turn)
- Primary dimension
- T max 19.89 mm, T min 19.48 mm
- Secondary dimension
- E max 17.75 mm, E min 17.35 mm
- Equivalence or compatibility note
- 1 Thread turn
- Additional data
- 400H max 9.08 mm, 400H min 9.04 mm; S max 1.32 mm, S min 0.56 mm; I min 10.26 mm; 8 threads/in.
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Source
- contapack.com.auhttps://www.contapack.com.au/SPI-Neck-Finishes.html