# 83-400 — Packaging specification equivalence: neck finishes, corrugated grades and pallet standards For 83-400, specification type is neck_finish; description is 83 mm neck, 400 series (1 thread turn); primary dimension is T max 83.00 mm, T min 82.12 mm; secondary dimension is E max 80.00 mm, E min 79.07 mm; equivalence or compatibility note is 1 Thread turn, recorded from its source on 2026-08-12. - **Specification ID:** 83-400 - **Specification type:** neck_finish _(our reading, not quoted from the source)_ - **Description:** 83 mm neck, 400 series (1 thread turn) - **Primary dimension:** T max 83.00 mm, T min 82.12 mm - **Secondary dimension:** E max 80.00 mm, E min 79.07 mm - **Equivalence or compatibility note:** 1 Thread turn - **Additional data:** 400H max 12.75 mm, 400H min 12.00 mm; S max 1.90 mm, S min 1.14 mm; I min 70.00 mm; 5 threads/in. ## What the source says > 83 | 83.00 | 82.12 | 80.00 | 79.07 | 12.75 | 12.00 | | | | | 1.90 | 1.14 | 70.00 | 5 ## Source - https://www.contapack.com.au/SPI-Neck-Finishes.html Last verified: 2026-08-12. Review by: 2028-08-11. Part of [Packaging specification equivalence: neck finishes, corrugated grades and pallet standards](https://referencesource.org/packaging-material-specification-equivalence/).