The Insulation Block,thermal, cataloged under National Stock Number 5640-00-267-6768, is classified within Federal Supply Class 5640 (No Item Name Available) of the Construction and Building Materials group. The primary manufacturer of record is General Services Administration Federal Supply Service. Government technical data includes 14 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5640-00-267-6768 |
| Primary Part Number | HH-I-564 FM1CLD |
| Item Name | Insulation Block,thermal |
| FSC / FSG | 5640 / 56 — No Item Name Available |
| Manufacturer | General Services Administration Federal Supply Service |
| Status | ACTIVE |
| Water Repellent Coated Surface | NOT PROVIDED |
| Material | MINERAL FIBER LOCATION NOT OTHERWISE SPECIFIED |
| Nondefinitive Spec/std Data | 1 FORM AND D CLASS |
| Departure From Cited Designator | BDBQ,ABMK |
| Coverage Width | 23.750 INCHES MINIMUM AND 24.250 INCHES MAXIMUM IN |
| Temp Rating | 1500.0 FAHRENHEIT DEGF |
| Coverage Length | 35.750 INCHES MINIMUM AND 36.250 INCHES MAXIMUM IN |
| One Side Decoration Provision | NOT PROVIDED |
| Maximum Thermal Conductivity | 0.80 AT 800 DEG F MEAN TEMP DEGF |
| Short Edge Joint Style | BUTT JOINT |
| Long Edge Joint Style | BUTT JOINT |
| Density Rating | 25.0 POUNDS PER CUBIC FOOT LBS |
| Overall Thickness | 1.750 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN |
| Flameproof Feature | INCLUDED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| HH-I-564 FM1CLD | General Services Administration Federal Supply Service (USA) |
| ASTM C612 | American Society for Testing and Materials Dba Astm International (USA) |
| HH-I-564 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| DE1052-200-4349428-PIECE 10 | Philadelphia Naval Shipyard (USA) |
NSN 5640-00-267-6768 is a Insulation Block,thermal, manufactured by General Services Administration Federal Supply Service, classified under FSC 5640 (No Item Name Available). Status: active.
NSN 5640-00-267-6768 has 4 cross-referenced part numbers: HH-I-564 FM1CLD (General Services Administration Federal Supply Service), ASTM C612 (American Society for Testing and Materials Dba Astm International), HH-I-564 (Federal Specifications Promulgated by General Services Administration Washington DC), DE1052-200-4349428-PIECE 10 (Philadelphia Naval Shipyard).
There are 5 known substitutes for 5640-00-267-6768: 5640-00-079-3360, 5640-00-242-6032, 5640-00-242-6034 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for HH-I-564 FM1CLD: Water Repellent Coated Surface: NOT PROVIDED; Material: MINERAL FIBER LOCATION NOT OTHERWISE SPECIFIED; Nondefinitive Spec/std Data: 1 FORM AND D CLASS; Departure From Cited Designator: BDBQ,ABMK. 16 total characteristics are documented in the Federal Logistics Information System.