5640-21-597-3125
Thermal Insulation Block
5640215973125 215973125 HHI525 204-3595
A rigid item designed to provide low thermal conductivity. It is composed of one or more kinds of granules and/or fiber with binder added, and has no specific surface perforations, fissures, slots or the like. It is supplied in lengths up to and including 36 inches (914.4 mm). For longer items, see INSULATION BOARD, THERMAL. Excludes BUILDING BOARD (as modified); MILLBOARD, ASBESTOS; ASBESTOS SHEET, COMPRESSED; CORK SHEET; CORK AND RUBBER SHEET; and FIBERBOARD (as modified). See also INSULATION BLANKET, THERMAL. View more Thermal Insulation Block
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Managed by Canada
NSN Created on 6 Jun 1968
Data Last Changed
January 2023
January 2023
NATO Update Count
1
1
NATO Data Quality

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5640-21-597-3125 Thermal Insulation Block 5640215973125
HHI525 204-3595 A rigid item designed to provide low thermal conductivity.
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Restrictions 5640-21-597-3125
End Users 5640-21-597-3125
- Canada (ZC)
Approved Sources 5640-21-597-3125
- Part Number
- Manufacturer
- Status
- HHI525
- Manufacturer
- 81348 - Federal Specifications Promulgated (Active)
- Incomplete Standard
- Incomplete Standard
- 204-3595
- 35917 - Department Of National Defence, (Active)
- NATO Reference
- NATO Reference
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