The Insulation Block,thermal, cataloged under National Stock Number 5640-01-237-9839, is classified within Federal Supply Class 5640 (No Item Name Available) of the Construction and Building Materials group. The primary manufacturer of record is Warner Robins Air Logistics Center. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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 | 5640-01-237-9839 |
| Primary Part Number | 8337040-2 |
| Item Name | Insulation Block,thermal |
| FSC / FSG | 5640 / 56 — No Item Name Available |
| Manufacturer | Warner Robins Air Logistics Center |
| Status | ACTIVE |
| Overall Thickness | 1.000 INCHES NOMINAL IN |
| Material | MINERAL FIBER LOCATION NOT OTHERWISE SPECIFIED |
| One Side Decoration Provision | NOT PROVIDED |
| Flameproof Feature | INCLUDED |
| Density Rating | 6.0 POUNDS PER CUBIC FOOT LBS |
| Coverage Length | 19.000 INCHES NOMINAL IN |
| Temp Rating | 400.0 FAHRENHEIT DEGF |
| Water Repellent Coated Surface | NOT PROVIDED |
| Coverage Width | 24.000 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 FMACL2 | General Services Administration Federal Supply Service (USA) |
| 8337040-2 PRIMARY | Warner Robins Air Logistics Center (USA) |
| 8337040-2 | Sacramento Air Logistics Center Sm-Alc/liil (USA) |
NSN 5640-01-237-9839 is a Insulation Block,thermal, manufactured by Warner Robins Air Logistics Center, classified under FSC 5640 (No Item Name Available). Status: active.
NSN 5640-01-237-9839 has 4 cross-referenced part numbers: HH-I-558 (Federal Specifications Promulgated by General Services Administration Washington DC), HH-I-558 FMACL2 (General Services Administration Federal Supply Service), 8337040-2 (Warner Robins Air Logistics Center), 8337040-2 (Sacramento Air Logistics Center Sm-Alc/liil).
There are 9 known substitutes for 5640-01-237-9839: 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 8337040-2: Overall Thickness: 1.000 INCHES NOMINAL IN; Material: MINERAL FIBER LOCATION NOT OTHERWISE SPECIFIED; Overall Length: 19.000 INCHES NOMINAL IN; One Side Decoration Provision: NOT PROVIDED. 11 total characteristics are documented in the Federal Logistics Information System.