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HH-I-564 — Technical Data Sheet

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— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The INSULATION BLOCK,THERMAL is a the manufacturer industrial component. Key specifications include material: MINERAL FIBER LOCATION NOT OTHERWISE SPECIFIED, temp_rating: 1500.0 FAHRENHEIT DEGF, overall_width: 23.750 INCHES MINIMUM AND 24.250 INCHES MAXIMUM IN, coverage_width: 23.750 INCHES MINIMUM AND 24.250 INCHES MAXIMUM IN, density_rating: 25.0 POUNDS PER CUBIC FOOT LBS, overall_length: 35.750 INCHES MINIMUM AND 36.250 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5640-00-267-6768, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
HH-I-564
NSN: 5640-00-267-6768
FSC: 5640
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialMINERAL FIBER LOCATION NOT OTHERWISE SPECIFIED
temp_rating1500.0 FAHRENHEIT DEGF
overall_width23.750 INCHES MINIMUM AND 24.250 INCHES MAXIMUM IN
coverage_width23.750 INCHES MINIMUM AND 24.250 INCHES MAXIMUM IN
density_rating25.0 POUNDS PER CUBIC FOOT LBS
overall_length35.750 INCHES MINIMUM AND 36.250 INCHES MAXIMUM IN
coverage_length35.750 INCHES MINIMUM AND 36.250 INCHES MAXIMUM IN
overall_thickness1.750 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
flameproof_featureINCLUDED
long_edge_joint_styleBUTT JOINT
short_edge_joint_styleBUTT JOINT
nondefinitive_spec/std_data1 FORM AND D CLASS
NSN5640-00-267-6768
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available INSULATION BLOCK,THERMAL TITLE COMPONENT PN HH-I-564 MFR INSULATION BLOCK,THERM
KEY FEATURES
•
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
TECHNICAL CHARACTERISTICS
WATER REPELLENT COATED SURFACENOT PROVIDED
MATERIALMINERAL FIBER LOCATION NOT OTHERWISE SPECIFIED
NONDEFINITIVE SPEC/STD DATA1 FORM AND D CLASS
DEPARTURE FROM CITED DESIGNATORBDBQ,ABMK
OVERALL WIDTH23.750 INCHES MINIMUM AND 24.250 INCHES MAXIMUM IN
COVERAGE WIDTH23.750 INCHES MINIMUM AND 24.250 INCHES MAXIMUM IN
TEMP RATING1500.0 FAHRENHEIT DEGF
COVERAGE LENGTH35.750 INCHES MINIMUM AND 36.250 INCHES MAXIMUM IN
ONE SIDE DECORATION PROVISIONNOT PROVIDED
MAXIMUM THERMAL CONDUCTIVITY0.80 AT 800 DEG F MEAN TEMP DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
ASTM C612InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
HH-I-558InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
HH-I-558 FMACL1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ASTM C612 TY2CT1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-I-15475InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ASTM C612 CL3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HH-I-564?
HH-I-564 is a INSULATION BLOCK,THERMAL.
What parts can replace HH-I-564?
There are 11 known substitutes for HH-I-564: ASTM C612, HH-I-558, HH-I-558 FMACL1 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HH-I-564?
HH-I-564 is cataloged in the Federal Logistics Information System under NSN 5640-00-267-6768. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026