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Technical Data Sheet
GC503A2 ✓ 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 CLAMP,INSTRUMENT MOUNTING is a the manufacturer industrial component. Key specifications include color: BLACK, width: 2.750 INCHES MAXIMUM IN, material: ALUMINUM ALLOY, surface_treatment: ANODIZE, specification/standard_data: 26512-GC503 MANUFACTURERS SPECIFICATION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-685-5700, 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
GC503A2
NSN: 5340-00-685-5700
FSC: 5340
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
colorBLACK
width2.750 INCHES MAXIMUM IN
materialALUMINUM ALLOY
surface_treatmentANODIZE
specification/standard_data26512-GC503 MANUFACTURERS SPECIFICATION
NSN5340-00-685-5700
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GC503A2 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
MATERIAL: ALUMINUM ALLOY
WIDTH: 2.750 INCHES MAXIMUM IN
SURFACE TREATMENT: ANODIZE
SPECIFICATION/STANDARD DATA: 26512-GC503 MANUFACTURERS SPECIFICATION
COLOR: BLACK
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALALUMINUM ALLOY
WIDTH2.750 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE
SPECIFICATION/STANDARD DATA26512-GC503 MANUFACTURERS SPECIFICATION
COLORBLACK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
257101F4XInterchangeable
interchangeable cross-reference
interchangeable
18623Interchangeable
interchangeable cross-reference
interchangeable
XAC75S474Interchangeable
interchangeable cross-reference
interchangeable
F18623Interchangeable
interchangeable cross-reference
interchangeable
CC-1957Interchangeable
interchangeable cross-reference
interchangeable
C3737Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GC503A2?
GC503A2 is a CLAMP,INSTRUMENT MOUNTING.
What parts can replace GC503A2?
There are 9 known substitutes for GC503A2: 257101F4X, 18623, XAC75S474 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GC503A2?
GC503A2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-685-5700. This indicates validated use in U.S. government and defense supply chains.
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