Panduit MMP350W38-CQ316 316 SS Marker Plate 3.5" 125-Pk

Panduit MMP350W38-CQ316 Stainless Steel Marker Plate

The Panduit MMP350W38-CQ316 delivers permanent asset and circuit identification in corrosive, high-temperature, and outdoor installations where paper labels fail. Stamped from Type 316 stainless steel, these 3.5" × 0.38" marker plates withstand salt spray, chemical exposure, UV degradation, and thermal cycling without fading or delaminating—critical for coastal telecom sites, industrial control panels, petrochemical facilities, and rooftop equipment racks. The raised slot accepts standard stainless-steel cable ties (sold separately) and guides insertion to eliminate fumbling in tight enclosures. Each plate holds one line of custom engraving or embossed text (engraving service not included; integrators typically use rotary engravers or fiber lasers). Ships 125 plates per pack, 1,000 per case—scaled for large datacenter builds, multi-building campus deployments, and municipal infrastructure projects requiring auditable labeling under NEC 110.22 or OSHA 1910.145.

Key Features

• Type 316 stainless steel construction resists chloride pitting, sulfuric acid vapor, and saltwater corrosion
• 3.5" × 0.38" (88.9 mm × 9.7 mm) profile fits standard conduit runs, cable trays, and equipment nameplates
• Raised cable-tie slot simplifies one-handed installation in confined spaces and reduces installer fatigue
• Silver brushed finish provides high contrast for engraved or stamped alphanumeric text
• RoHS-compliant material meets environmental procurement requirements for government and enterprise projects
• 125-pack quantity supports phased rollouts; case quantity (1,000) covers full datacenter floors or multi-site ISP deployments

Type 316 stainless steel (UNS S31600) offers superior corrosion resistance compared to Type 304, making the MMP350W38-CQ316 the correct choice for coastal installations within 10 miles of saltwater, chemical plants handling acids or alkalis, wastewater treatment facilities, food-processing environments requiring wash-down sanitation, and any outdoor enclosure subject to road-salt runoff. The alloy's molybdenum content (2–3%) prevents crevice corrosion in stagnant moisture conditions—common inside NEMA-rated boxes and underground pull vaults. Maximum service temperature reaches 870°C (1,598°F) intermittent, 925°C (1,697°F) continuous in oxidizing atmospheres, though typical telecom and security applications remain well below 85°C ambient. Integrators report 15+ year legibility in marine environments where adhesive labels fail within 18 months.

The raised slot design accepts Panduit's stainless-steel ball-lock cable ties (MLT series, sold separately) or equivalent 316-grade ties with 0.25"–0.30" bundle diameter capacity. Unlike flat plates requiring tie threading from behind, the raised slot allows front-side insertion—critical when labeling energized panels, overhead cable trays, or equipment already mounted in tight racks. Slot depth (approximately 2 mm) prevents ties from slipping during vibration or thermal expansion. For conduit runs, integrators mount plates using perforated stainless-steel strapping or adhesive-backed hook-and-loop (verify adhesive chemical compatibility in solvent-rich environments). For valve and pipe labeling, consider pairing with Panduit's stainless-steel ball-chain (sold separately) looped through the slot.

Common applications include fiber-optic splice enclosure labeling (circuit ID, splice count, downstream node), generator and UPS battery-bank terminal identification (polarity, ampacity, maintenance schedule), HVAC control-valve tagging (zone, setpoint, actuator model), industrial Ethernet switch port mapping (VLAN, PoE budget, upstream SFP), and rooftop antenna sector labeling (azimuth, frequency, EIRP). The 3.5" length accommodates up to 20–24 characters in 3/16" engraved text or 12–14 characters in 1/4" embossed type—sufficient for asset tags combining site code, equipment type, and serial number. Integrators using fiber-laser marking achieve 0.001" engraving depth with permanent contrast; rotary engravers produce 0.005"–0.010" depth suitable for gloved reading. Avoid adhesive label overwraps—they trap moisture and defeat the corrosion resistance of stainless steel.

Designed for MIM (Multi-Mount) systems and compatible with Panduit's broader stainless-steel identification ecosystem, the MMP350W38-CQ316 integrates into structured cabling documentation workflows, computerized maintenance management systems (CMMS), and asset-tracking databases. Plates accept QR-code laser engraving for mobile scanner integration—common in hyperscale datacenters linking physical infrastructure to DCIM platforms. RoHS compliance ensures specification acceptance in EU, California, and federal GSA Schedule contracts. For projects requiring NFPA 70 (NEC) or IEEE 1100 (Emerald Book) compliance, stainless-steel identification satisfies inspectors where paper or plastic labels trigger rejection. Bulk packaging reduces per-unit cost on large deployments; integrators report 8–12 seconds per plate install time after engraving, versus 25–35 seconds for adhesive-label application, alignment, and burnishing.