PartsTable
Technical Data Sheet
1604-78 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The MICROCIRCUIT,MEMORY is a the manufacturer memory module engineered for enterprise server and workstation platforms requiring validated, high-reliability memory. Key specifications include material: PLASTIC, drive_type: SCREW SLOT, design_type: THREADED, thread_class: 3A A, overall_diameter: 0.813 INCHES NOMINAL IN, features_provided: ELECTROSTATIC SENSITIVE AND HERMETICALLY SEALED AND BURN IN AND PROGRAMMED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-7234, 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
1604-78
NSN: 5340-00-290-7234
FSC: 5340
CAGE: 97945 — PENNWALT CORP S S WHITE INDUSTRIAL PRODUCTS DIV (USA)
SPECIFICATIONS
materialPLASTIC
drive_typeSCREW SLOT
design_typeTHREADED
thread_class3A A
overall_diameter0.813 INCHES NOMINAL IN
features_providedELECTROSTATIC SENSITIVE AND HERMETICALLY SEALED AND BURN IN AND PROGRAMMED
inclosure_materialCERAMIC
memory_device_typePAL
test_data_document96906-MIL-STD-883 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
end_item_identificationPACER DAWN
inclosure_configurationLEADED CHIP CARRIER
NSN5340-00-290-7234
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1604-78 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
FEATURES PROVIDED: SHOULDER
THREAD CLASS: 3A A
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 9/16-18 UNF
DRIVE TYPE: SCREW SLOT
DESIGN TYPE: THREADED
MATERIAL: PLASTIC
OVERALL DIAMETER: 0.813 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Server memory expansion for virtualization workloads
  • Database performance optimization (in-memory computing)
  • VDI and remote desktop session hosting
  • High-performance computing (HPC) clusters
  • Mail server and collaboration platform scaling
  • Application server tier expansion
TECHNICAL CHARACTERISTICS (FLIS)
FEATURES PROVIDEDSHOULDER
THREAD CLASS3A A
THREAD SIZE AND SERIES/TYPE DESIGNATOR9/16-18 UNF
DRIVE TYPESCREW SLOT
DESIGN TYPETHREADED
MATERIALPLASTIC
OVERALL DIAMETER0.813 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
MILC52078Upgraded Successor
successor cross-reference
successor
RU51089Upgraded Successor
successor cross-reference
successor
28901-17Upgraded Successor
successor cross-reference
successor
21Upgraded Successor
successor cross-reference
successor
MIL-C-5501Upgraded Successor
successor cross-reference
successor
57AUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1604-78?
1604-78 is a MICROCIRCUIT,MEMORY.
What parts can replace 1604-78?
There are 29 known substitutes for 1604-78: MILC52078, RU51089, 28901-17 and 26 more. Substitute compatibility should be verified for your specific system.
Is 1604-78 still available?
1604-78 is currently cancelled.
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