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Technical Data Sheet
51-456 ✓ 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,DIGITAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_width: 0.922 INCHES MAXIMUM IN, body_height: 0.146 INCHES MAXIMUM IN, body_length: 0.919 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT AND 212.0 FAHRENHEIT SINGLE RESPONSE DEGF, hole_diameter: 0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-126-8783, 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
51-456
NSN: 5330-00-126-8783
FSC: 5330
CAGE: 1HP16 — E G GASKET AND SUPPLY INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width0.922 INCHES MAXIMUM IN
body_height0.146 INCHES MAXIMUM IN
body_length0.919 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT AND 212.0 FAHRENHEIT SINGLE RESPONSE DEGF
hole_diameter0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width3.375 INCHES NOMINAL IN
physical_formLIQUID
overall_length3.438 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL PIPE FIRST END
inside_diameter0.375 INCHES NOMINAL IN
connection_stylePLAIN FIRST END
NSN5330-00-126-8783
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 51-456 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
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
HOLE DIAMETER: 0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
APERTURE DIAMETER: 0.875 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH3.375 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
HOLE DIAMETER0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
APERTURE DIAMETER0.875 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN
OVERALL LENGTH3.438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
MIL-D-4562Interchangeable
interchangeable cross-reference
interchangeable
A-A-50695Interchangeable
interchangeable cross-reference
interchangeable
51456Interchangeable
interchangeable cross-reference
interchangeable
221217Interchangeable
interchangeable cross-reference
interchangeable
351-7070-010Interchangeable
interchangeable cross-reference
interchangeable
26101Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51-456?
51-456 is a MICROCIRCUIT,DIGITAL.
What parts can replace 51-456?
There are 11 known substitutes for 51-456: MIL-D-4562, A-A-50695, 51456 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51-456?
51-456 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-126-8783. This indicates validated use in U.S. government and defense supply chains.
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