The Defense Logistics Agency is seeking sources capable of manufacturing NSN 5962-016422641, with Tandex Test Labs (1FE65, P/N TTL12003) as the currently approved source. This item has an AMC/AMSC rating of 3B, meaning it is acquired directly from the actual manufacturer and must come from a source specified on a source control or selected-item drawing. Suitable technical data, Government data rights, or manufacturing knowledge are not available to allow acquisition from other sources or qualification of another part. Interested companies not already approved may submit a Source Approval Request (SAR) package through the DLA Weapons Support Alternate Offer/Source Approval Program to demonstrate they can manufacture the item to OEM quality or better. DLA Weapons Support - Columbus is procuring the item, and information may be provided directly to the listed Contract Specialist.