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Aearo Technologies LLC, a 3M company MM-400-UC31-H

RND STNDFF 5/16"-18 SYN RUB 3/4"

Answer first: this page is a purchasing reference for the exact part number MM-400-UC31-H from Aearo Technologies LLC, a 3M company. Use it to start datasheet, package, manufacturer and RFQ verification; do not treat page text as a live stock, price or lead-time promise.

Manufacturer: Aearo Technologies LLC, a 3M company Part number: MM-400-UC31-H Package: RFQ verification required

Key Parameters

Part NumberMM-400-UC31-H
ManufacturerAearo Technologies LLC, a 3M company
CategoryBoard Spacers, Standoffs
seriesISOLOSS™ HD
packagingBox
product statusActive
param 1Round Standoff
param 2Threaded
param 3Male, Male
param 45/16"-18
param 5-
param 61.000" (25.40mm) 1"
param 70.750" (19.05mm) 3/4"
param 82.000" (50.80mm) 2"
param 9Vibration Dampening
param 10Synthetic Rubber
param 11-
param 12Black

Parameters are provided for purchasing review. Confirm package, suffix, lifecycle status, datasheet revision and approved substitutes before ordering.

How to Verify MM-400-UC31-H Before Ordering

Datasheet and parameter checks

  • Confirm the full manufacturer part number, not only a shortened search keyword.
  • Compare package, pinout, dimensions, voltage or rating fields, temperature range and compliance wording against the released BOM.
  • Use the manufacturer datasheet or drawing for electrical and mechanical limits before approving a substitute.

RFQ fields SENICO needs

  • Send exact part number, manufacturer, quantity, target delivery date, destination and required packaging.
  • State whether alternates are allowed, and list any date-code, certificate, traceability or customer AVL requirement.
  • Keep exact stock, factory lead time and proposed alternatives in separate quote lanes.

For MM-400-UC31-H, SENICO recommends checking manufacturer marking, package, date code, requested quantity, approved vendor requirements and replacement risk before issuing a purchase order. If a supplier suggests an equivalent, record the changed fields and approval owner before comparing price.

We do not treat displayed data as a real-time stock or price commitment. The RFQ reply is the verified commercial reference.

Related buying guides: stock and lead-time verification, equivalent IC comparison, and BOM RFQ preparation.