FSC: 5640 — Wallboard, Building Paper, and Thermal Insulation Materials
FSG: 56 — Construction and Building Materials
General Description
The Sound Controlling Blanket, cataloged under National Stock Number 5640-01-537-4530, is classified within Federal Supply Class 5640 (Wallboard, Building Paper, and Thermal Insulation Materials) of the Construction and Building Materials group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5640-01-537-4530
Item Name
Sound Controlling Blanket
FSC / FSG
5640 / 56 — Wallboard, Building Paper, and Thermal Insulation Materials
Status
ACTIVE
FSC Application Data
NHA TOP COWL 9163T19
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
815625A 1
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 5640 — Wallboard, Building Paper, and Thermal Insulation Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5640-00-001-1540
5640-00-001-1540 · Item name not on file
5640-00-001-9581
5640-00-001-9581 · Item name not on file
5640-00-003-3828
CERAMIC STRIP,WOVEN
5640-00-003-6504
5640-00-003-6504 · Item name not on file
5640-00-003-6505
5640-00-003-6505 · Item name not on file
5640-00-003-6506
5640-00-003-6506 · Item name not on file
5640-00-003-6508
5640-00-003-6508 · Item name not on file
5640-00-003-6509
5640-00-003-6509 · Item name not on file
Frequently Asked Questions
What is NSN 5640-01-537-4530?
NSN 5640-01-537-4530 is a Sound Controlling Blanket, classified under FSC 5640, Wallboard, Building Paper, and Thermal Insulation Materials. Status: active.
What are the specifications of 5640-01-537-4530?
Key specifications for 5640-01-537-4530: FSC Application Data: NHA TOP COWL 9163T19; Part Name Assigned by Controlling Agency: SOUND BLANKET KIT; End Item Identification: MERCURY 25 SEA PRO, SUPER 15, 2 CYL. 1 specification is documented in the U.S. Government catalog.
Is NSN 5640-01-537-4530 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.