Plastic Thumb Nut Set for TE-5003 Filter Holder (Set of 4) SKU: TE-5003-9-3

The TE-5003-9-3 is a set of four plastic thumb nuts designed as replacement fasteners for Tisch Environmental's TE-5003 filter holders used in TSP (Total Suspended Particulate) high volume air samplers. These thumb nuts provide secure, tool-free attachment of filter media and filter holder components while allowing for easy maintenance access during routine sampling operations.

Function and Design

These plastic thumb nuts work in conjunction with brass bolts, washers, and rivets to create a secure mounting system for the 8" x 10" filter holder assembly. The filter holder operates at flow rates between 39-60 cfm, collecting ambient particulates on glass fiber filters that are weighed pre and post-sample to determine total suspended particulate matter. The thumb nut design eliminates the need for tools during filter changes, reducing maintenance time and ensuring consistent clamping force.

Compatibility

This thumb nut set is specifically engineered for use with:

• TE-5003 Filter Holder for Non Flow Controlled Total Suspended Particulate (TSP) High Volume Air Sampler
• TE-5003V Filter Holder for Volumetric Flow Controlled (VFC) TSP systems
• TE-5000 series TSP samplers that include the TE-5003 8"x10" stainless steel filter holder
• Related hardware assembly TE-5003-9 (complete bolt, rivet, washer and nut set)

Material and Construction

Manufactured from durable plastic material designed to withstand outdoor environmental conditions while maintaining structural integrity. The plastic construction is suitable for ambient temperature applications from -30 to +50°C and relative humidity from 0-100%, matching the operating specifications of Tisch Environmental's high volume air samplers.

Maintenance Notes

Regular inspection of thumb nuts is recommended as part of routine sampler maintenance. Replace when threads show wear, cracks appear in the plastic, or when thumb nuts no longer provide secure clamping force. Since TSP samplers collect all ambient particulates without size separation, proper filter holder sealing is critical for accurate sampling results. Tisch Environmental recommends keeping spare thumb nuts on hand to minimize sampler downtime during scheduled maintenance.