The Insulation Board,thermal, cataloged under National Stock Number 5640-01-021-7458, is classified within Federal Supply Class 5640 (No Item Name Available) of the Construction and Building Materials group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5640-01-021-7458 |
| Primary Part Number | HH-I-558 |
| Item Name | Insulation Board,thermal |
| FSC / FSG | 5640 / 56 — No Item Name Available |
| Manufacturer | Federal Specifications Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Nondefinitive Spec/std Data | A FORM AND 1 CLASS |
| Material | GLASS FIBER LOCATION NOT OTHERWISE SPECIFIED |
| Water Repellent Coated Surface | NOT PROVIDED |
| Flameproof Feature | INCLUDED |
| One Side Decoration Provision | NOT PROVIDED |
| Overall Thickness | 1.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| HH-I-558 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| HH-I-558 FMACL1 | General Services Administration Federal Supply Service (USA) |
NSN 5640-01-021-7458 is a Insulation Board,thermal, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5640 (No Item Name Available). Status: active.
NSN 5640-01-021-7458 has 2 cross-referenced part numbers: HH-I-558 (Federal Specifications Promulgated by General Services Administration Washington DC), HH-I-558 FMACL1 (General Services Administration Federal Supply Service).
There are 9 known substitutes for 5640-01-021-7458: 5640-00-079-3360, 5640-00-142-5956, 5640-00-281-6918 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for HH-I-558: Nondefinitive Spec/std Data: A FORM AND 1 CLASS; Material: GLASS FIBER LOCATION NOT OTHERWISE SPECIFIED; Overall Width: 36.000 INCHES NOMINAL IN; Overall Length: 48.000 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.