The Sound Controlling Block, cataloged under National Stock Number 5640-00-074-0871, is classified within Federal Supply Class 5640 (No Item Name Available) of the Construction and Building Materials group. The primary manufacturer of record is Telemechanics Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5640-00-074-0871 |
| Primary Part Number | 160990 |
| Item Name | Sound Controlling Block |
| FSC / FSG | 5640 / 56 — No Item Name Available |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Color | GRAY/GREY |
| Coverage Length | 9.406 INCHES NOMINAL IN |
| Coverage Width | 3.568 INCHES NOMINAL IN |
| Flameproof Feature | INCLUDED OR NOT INCLUDED |
| Material | PLASTIC POLYVINYL CHLORIDE (PVC) BASIC |
| Overall Thickness | 0.261 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5640-00-074-0871 is a Sound Controlling Block, manufactured by Telemechanics Inc, classified under FSC 5640 (No Item Name Available). Status: active.
NSN 5640-00-074-0871 has 2 cross-referenced part numbers: 160990 (American Telephone and Telegraph Co), 160990 (Telemechanics Inc).
There are 2 known substitutes for 5640-00-074-0871: 5950-01-051-8285, 6515-01-153-4893. Verify interchangeability with system specifications before substitution.
Key specifications for 160990: Color: GRAY/GREY; Coverage Length: 9.406 INCHES NOMINAL IN; Coverage Width: 3.568 INCHES NOMINAL IN; Flameproof Feature: INCLUDED OR NOT INCLUDED. 8 total characteristics are documented in the Federal Logistics Information System.