The Insulation Blanket,thermal, cataloged under National Stock Number 5640-01-020-2171, is classified within Federal Supply Class 5640 (No Item Name Available) of the Construction and Building Materials group. The primary manufacturer of record is Johns Manville Intl. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5640-01-020-2171 |
| Primary Part Number | B385 |
| Item Name | Insulation Blanket,thermal |
| FSC / FSG | 5640 / 56 — No Item Name Available |
| Manufacturer | Johns Manville Intl |
| Status | ACTIVE |
| Thickness | 4.000 INCHES NOMINAL IN |
| Length | 480.000 INCHES NOMINAL IN |
| Unit Package Type | ROLL |
| Layer Quantity | 1 SINGLE LAYER |
| Quilted Feature | NOT INCLUDED |
| Maximum Thermal Conductivity | NOT RATED |
| Content Within Each Unit Package | 40 FT FT |
| Material | GLASS FIBER LAYER SINGLE LAYER |
| Layer Environmental Protection | HEAT RESISTANT SINGLE LAYER |
| Environmental Attribute Code | COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - BUILDING INSULATION PRODUCTS |
| Added Binder | NOT INCLUDED |
| Layer Thickness | 4.000 INCHES NOMINAL SINGLE LAYER IN |
| Affixed Sheet | NOT INCLUDED |
| Width | 15.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5640-01-020-2171 is a Insulation Blanket,thermal, manufactured by Johns Manville Intl, classified under FSC 5640 (No Item Name Available). Status: active.
NSN 5640-01-020-2171 has 2 cross-referenced part numbers: B385 (Johns Manville Intl), R-16FLRS (Johns Manville Intl).
There are 2 known substitutes for 5640-01-020-2171: 6810-00-236-5342, 6145-00-500-2115. Verify interchangeability with system specifications before substitution.
Key specifications for B385: Thickness: 4.000 INCHES NOMINAL IN; Length: 480.000 INCHES NOMINAL IN; Unit Package Type: ROLL; Layer Quantity: 1 SINGLE LAYER. 14 total characteristics are documented in the Federal Logistics Information System.