080A107

Counterfeit and mislabeled sensor accessories represent a growing risk in the vibration monitoring supply chain, particularly when probe tips such as the 080A107 are substituted with refurbished or dimensionally non-compliant parts, leading to resonant frequency shifts and false positive readings in predictive maintenance systems. The 080A107 is a stainless steel probe tip, 2 inches long, classified under Sensor, Transducer Accessories, designed for use with vibration sensors manufactured by Amphenol The Modal Shop. This article provides a procurement specialist's verification protocol covering visual inspection, dimensional measurement, material verification, and lot acceptance criteria.

Visual and Marking Inspection: Laser Etch vs. Ink and Lot Code Decoding

The first line of defense against substandard units is a 10x magnification inspection of the marking on the threaded collar. Genuine 080A107 units feature a laser-etched part number, typically a clean, shallow gray mark with no ink bleed. Counterfeit tips often exhibit pad-printed white ink, which wears off with solvent cleaning or shows uneven thickness under oblique lighting. Marking should include "080A107" followed by a date code in YYWW format — for example, "2436" indicates manufacturing week 36 of 2024. Verify the date code is no more than 24 months old unless the supplier provides a certificate of conformance (COC) confirming fresh stock. Misspellings (e.g., "080A17") or absent manufacturer logos are immediate rejection criteria.

Dimensional and Material Verification: Measuring the 080A107

A micrometer and a profilometer are required to confirm the 080A107 is a 2.000 ±0.005 inch stainless steel tip. Measure total length from the base of the hex collar to the probe tip end. The thread form must be a standard 10-32 UNF with a Class 2A fit — use a go/no-go thread gauge. Perform a material spark test on a sacrificial unit if volume exceeds 50 pieces: genuine 304 stainless steel produces a non-magnetic response with a reddish-orange spark stream under a grinding wheel; low-cost 201 stainless or plated carbon steel will be magnetic with a yellow-white spark pattern. For RoHS compliance confirmation, request a Third-Party Test Report (SGS or TüV) alongside the COC, as the database indicates RoHS compliance but no specific restricted substance declaration is shipped with the part.

The two most critical specifications from the table above are the 2.0-inch length and the 10-32 UNF-2A thread specification. The length determines the distance from the sensor mass to the measurement surface; a deviation of ±0.010 inch can shift the first bending mode of the assembly by 5–10%, causing false alarm thresholds in vibration analysis software. The thread specification ensures repeatable mounting torque. Using a 1/4-28 tip instead of 10-32 risks thread stripping when tightened to the manufacturer's recommended 2 N·m torque. Procurement engineers should mandate a dimensional inspection report for every incoming lot of 080A107 tips, especially when sourcing from non-exclusive distributors.

X-Ray and Decap Inspection for High-Value Applications

For aerospace, nuclear, or automotive safety-critical applications, nondestructive X-ray inspection is recommended at a 5% sample rate or a minimum of 3 pieces per lot. While the 080A107 is a passive stainless steel component (no internal electronics), X-ray can detect internal voids or weld defects in the tip-to-shank junction. Grind-and-etch (decap) destructive analysis is unnecessary for this passive accessory. However, a density check via Archimedes method may confirm 304 stainless steel (density 8.0 g/cm3) versus lower-cost alloys (7.7–7.9 g/cm3). Any unit with a density deviation greater than 0.3 g/cm3 should be quarantined for material spectrometry (PMI) testing.

Packaging and Certificate of Conformance Cross-Check

Genuine 080A107 units ship in anti-static polybags with a white label containing the part number, lot code, and quantity. Verify the label matches the COC — the lot number printed on the bag must exactly correspond to the lot number on the COC. For orders exceeding 100 pieces, require a mill test report (MTR) for the stainless steel bar stock used in manufacturing. Discrepancies in bag seal integrity or missing manufacturer address are red flags. Perform a torque test on three samples per lot: apply 2.0 N·m torque to each tip on a 10-32 stud. Reject any tip that deforms, splits, or requires less than 1.5 N·m to reach audible thread slip.

AQL Sampling Plan with Accept/Reject Criteria

Use ANSI/ASQ Z1.4 (formerly MIL-STD-105E) General Inspection Level II, normal severity. For critical parameters (length, thread fit, material density), use a tightened inspection level S-3. Acceptable Quality Limit (AQL) for major defects should be set at 1.0%, with critical defects at 0.10%. A major defect is defined as a dimensional deviation exceeding ±0.010 inch or thread failure on a go-gauge. A critical defect is identification of non-stainless material (magnetic response or density below 7.7 g/cm3). Accept lot: zero critical defects and ≤3 major defects per 315-piece lot (sample size code L). Reject lot: any single critical defect triggers 100% inspection or return to supplier.

Procurement Workflow Summary

When receiving the 080A107 probe tip, follow this three-step workflow: first, conduct visual marking inspection under 10x magnification, confirming laser etch presence and decoding the YYWW lot code. Second, perform dimensional verification of length (micrometer) and thread fit (10-32 UNF-2A go/no-go gauge) on an AQL-based sample. Third, for high-reliability applications, add density measurement by immersion and a torque test at 2.0 N·m. Document all findings in a receiving inspection report with clear pass/fail criteria. Engage the supplier immediately for any lot that fails the material spark test or exhibits date codes older than 24 months.