PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HH-I-574Insulation,thermal

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5640-00-808-2562 · FSC 5640 · No Item Name Available
Verified by PartsTable
NSN 5640-00-808-2562 — this item is cataloged by the U.S. Government under National Stock Number 5640-00-808-2562. Primary manufacturer part number: HH-I-574.
Features
  • Insulation,thermal — FSC 5640
  • Content Within Each Unit Package: 12 LBS LBS
  • Material: PERLITE
  • Density Rating: 3.0 POUNDS PER CUBIC FOOT LBS
  • Environmental Attribute Code: COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - BUILDING INSULATION PRODUCTS
  • Temp Rating: 1800.0 FAHRENHEIT DEGF
  • Resin Treatment: NOT INCLUDED
  • Physical Form: GRANULAR
Applications
  • Applications requiring Perlite construction
General Description

The Insulation,thermal, cataloged under National Stock Number 5640-00-808-2562, 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 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5640-00-808-2562
Primary Part NumberHH-I-574
Item NameInsulation,thermal
FSC / FSG5640 / 56 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Content Within Each Unit Package12 LBS LBS
MaterialPERLITE
Density Rating3.0 POUNDS PER CUBIC FOOT LBS
Environmental Attribute CodeCOMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - BUILDING INSULATION PRODUCTS
Temp Rating1800.0 FAHRENHEIT DEGF
Resin TreatmentNOT INCLUDED
Physical FormGRANULAR
Unit Package TypeBAG
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
3460-00-230-2293 INTERCHANGEABLE
Holder,cutting Tool
6635-00-530-0009 INTERCHANGEABLE
Balancing Machine,dynamic-Static
5130-00-595-8339AVC12A1 INTERCHANGEABLE
Hammer,pneumatic,portable
Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division
5325-00-639-0359 INTERCHANGEABLE
Stud,snapslide Fastener
5340-00-911-817621407 INTERCHANGEABLE
Plug Assembly,sealing
Moog Inc. Dba Ampac-Isp Corp
4820-01-063-48643-S-10 INTERCHANGEABLE
Seat,valve
Meyer Company, the
6645-01-167-5814AX605SBLKIT INTERCHANGEABLE
Stopwatch
Accusplit Inc
4730-01-199-1818 INTERCHANGEABLE
Coupling
6525-01-518-93133S INTERCHANGEABLE
Probe,ultrasonic Unit,diagnostic
Ge Medical Systems Business Group
5998-01-603-83623S INTERCHANGEABLE
Circuit Card Assembly
Us Tech Inc Dba Us Tech Inc
Cross-Reference Index
Part NumberManufacturer
HH-I-574 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
3S Silbrico Corp (USA)
ASTM C549 American Society for Testing and Materials Dba Astm International (USA)
Related Parts
3460-00-230-2293INTERCHANGEABLE
HOLDER,CUTTING TOOL
6635-00-530-0009INTERCHANGEABLE
BALANCING MACHINE,DYNAMIC-STATIC
5130-00-595-8339INTERCHANGEABLE
HAMMER,PNEUMATIC,PORTABLE
AVC12A1
5325-00-639-0359INTERCHANGEABLE
STUD,SNAPSLIDE FASTENER
5340-00-911-8176INTERCHANGEABLE
PLUG ASSEMBLY,SEALING
21407
4820-01-063-4864INTERCHANGEABLE
SEAT,VALVE
3-S-10
6645-01-167-5814INTERCHANGEABLE
STOPWATCH
AX605SBLKIT
4730-01-199-1818INTERCHANGEABLE
COUPLING
6525-01-518-9313INTERCHANGEABLE
PROBE,ULTRASONIC UNIT,DIAGNOSTIC
3S
5998-01-603-8362INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
3S

Frequently Asked Questions

What is NSN 5640-00-808-2562?

NSN 5640-00-808-2562 is a Insulation,thermal, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5640 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5640-00-808-2562?

NSN 5640-00-808-2562 has 3 cross-referenced part numbers: HH-I-574 (Federal Specifications Promulgated by General Services Administration Washington DC), 3S (Silbrico Corp), ASTM C549 (American Society for Testing and Materials Dba Astm International).

What NSN replaces 5640-00-808-2562?

There are 10 known substitutes for 5640-00-808-2562: 3460-00-230-2293, 6635-00-530-0009, 5130-00-595-8339 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HH-I-574?

Key specifications for HH-I-574: Content Within Each Unit Package: 12 LBS LBS; Material: PERLITE; Density Rating: 3.0 POUNDS PER CUBIC FOOT LBS; Environmental Attribute Code: COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - BUILDING INSULATION PRODUCTS. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5640-00-808-2562 still in active supply?

NSN 5640-00-808-2562 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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