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BULK PACK of 100 x Brass Chicago knurled head interscrews 20mm

BULK PACK of 100 x Brass Chicago knurled head interscrews 20mm

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genuine brass • knurled head • archival • extendable

This is a bulk pack of brass 20mm interscrews 32IS20-100 containing 100 posts and 100 screws with a 20mm post length.

Brass 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 genuine brass (not simply brass-coloured metal) 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.


All our interscrews are also available in smaller retail 6-packs.

Our brass interscrews are available in 5mm increments in sizes from 5mm up to 60mm, and can be lengthened further with the use of extension posts.

Interscrews in 5mm, 10mm, 15mm and 20mm lengths feature ONE-PIECE posts. Lengths 25mm and longer feature TWO-PIECE posts made up using short brass posts with zinc-coated steel extensions.

Extensions are available in 7mm, 10mm, 15mm, 20mm, 30mm, 40mm, 50mm and 60mm lengths.


Interscrew components at The Photo Album Shop

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.