AKG 0099N18020 - EJOT KB 18X8 Screw for AKG PT 450 WMS40,400,470,4000

AKG 0099N18020 - EJOT KB 18x8 Screw for PT450 Transmitters and WMS40/400/470/4000 Families

The AKG 0099N18020 is the original EJOT PT KB 18x8 screw used by AKG to secure the housings of various wireless devices. In the AKG service documentation, it is explicitly listed for the PT400, PT450 and PT470 bodypacks ( WMS400/450/470 families) with a quantity of 2 screws each . It also appears on the WMS40 Pro (2 screws per device) and on the WMS4000/4500 series - e.g. the HT4000/HT4500 - with 4 screws and a black finish . The PT KB 18x8 designation identifies an EJOT PT screw (thermoplastic thread) with a nominal size of 1.8 × 8 mm , which is ideal for direct screwing into housing plastics without damaging the material.

Main features

• AKG OEM replacement part number 0099N18020 ; appears in the official parts lists for PT400/PT450/PT470 (WMS400/450/470), WMS40 Pro and HT4000/HT4500 (WMS4000/4500).
• Thread type : EJOT PT , designed for direct screwing into thermoplastics, reducing radial stress and avoiding cracks.
• Size : KB 18×8 (nominal diameter ~ 1.8 mm × length 8 mm ) according to EJOT nomenclature.
• Finish : Black color versions documented for WMS4000/4500.
• Typical location : closing the half-shells and/or chassis fastening elements on belt-pack and/or handheld transmitters, depending on the model.

Product benefits

• Verified compatibility : exact reference indicated by the manufacturer for the models mentioned, avoiding problems with thread pitch or insufficient length.
• Mechanical integrity : ensures correct tightening on plastic parts thanks to the PT profile, prolonging the life of the housing.
• Agile maintenance : As a standard across multiple families, it simplifies spare parts inventory for rental, broadcast, and technical services.

Use cases

• Replacement after losses during interventions or vibrations on tour/installation.
• Thread recovery and firm closure in PT400/PT450/PT470 or WMS40 Pro housings.
• Maintenance of HT4000/HT4500 when original KB18×8 hardware is required.

Frequently Asked Questions

How many screws does my equipment need? PT400/PT450/PT470: 2 pcs . WMS40 Pro: 2 pcs . HT4000/HT4500: 4 pcs , according to the service manuals.

Does this screw fit all WMS4000 variants? It's documented for several devices in the family (e.g., HT4000/HT4500). For other WMS4000/HT4500 devices, always refer to the specific parts list.

What does “PT KB 18x8” mean? “PT” stands for EJOT thermoplastic threads; “KB 18x8” corresponds to a “KB” head/shape screw with a nominal diameter of 1.8 mm and a length of 8 mm .

Related parts (not included)

• 9999N07010 – Security screw 18×8 (specific variants and markets, e.g., Japan).

Description for projects

Original AKG screw 0099N18020 , type EJOT PT KB 18×8 (approx. Ø 1.8 mm × 8 mm ), for fixing housings on AKG wireless transmitters; documented quantities: PT400/PT450/PT470 (2 pcs), WMS40 Pro (2 pcs), HT4000/HT4500 (4 pcs, black). Use: direct screwing into thermoplastics according to official parts diagrams.