zinc-coated brass • M4 thread • knurled head • archival • made in New Zealand
This is a bulk pack of matt black 20mm interscrew sets 32IS20B-100, containing 100 posts and 100 screws with a 20mm post length.
Black Chicago interscrews (also referred to as screw posts, book screws or ledger screws) are used in making post-bound photo albums and books, menus, folios, swatchbooks, etc. Made from black zinc electroplated genuine brass and therefore ideal for archival use, these high quality interscrews have knurled heads which can be easily tightened and loosened by hand for convenience and to avoid burring.
Post length 20mm. Post diameter 5mm. Head diameter 10mm. Thread gauge M4.
All our interscrews are also available in smaller retail 6-packs.
Our black interscrews are available in 5mm increments in sizes from 5mm up to 20mm, and can be lengthened further with the use of extension posts.
Extensions are available in 7mm, 10mm, 15mm, 20mm, 30mm, 40mm, 50mm and 60mm lengths. These can be used to extend the length of the posts, for instance if extra pages are added to an album.
WHAT'S WHAT IN INTERSCREWS:
Variables such as length, depth, diameter, thread length and pitch mean that it is HIGHLY UNLIKELY that our interscrews or extensions will fit into existing sets from different manufacturers. Instead of trying to match existing sets, we recommend that you consider replacing your existing interscrews entirely. This way you will be able to add extensions or obtain replacements later if required.