PartsTable
Technical Data Sheet
Download PDF

GC503A2EB — CLAMP,INSTRUMENT MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

GC503A2EB: CLAMP,INSTRUMENT MOUNTING.

The CLAMP,INSTRUMENT MOUNTING is a the manufacturer industrial component. Key specifications include height: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, material: ALUMINUM ALLOY 6061, inside_diameter: 1.890 INCHES NOMINAL IN, style_designator: ROUND, surface_treatment: CHROMATE, material_document_and_classification: QQ-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-415-6129, 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
GC503A2EB
NSN: 5340-01-415-6129
FSC: 5340 — Hardware, Commercial
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
height0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
materialALUMINUM ALLOY 6061
inside_diameter1.890 INCHES NOMINAL IN
style_designatorROUND
surface_treatmentCHROMATE
material_document_and_classificationQQ-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
center_to_center_distance_between_holes2.453 INCHES NOMINAL IN
surface_treatment_document_and_classificationMIL-C-5541C1.3 MIL SPEC SINGLE TREATMENT RESPONSE
distance_from_aperture_center_to_mounting_hole_center1.203 INCHES NOMINAL IN
NSN5340-01-415-6129
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GC503A2EB 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541C1.3 MIL SPEC SINGLE TREATMENT RESPONSE
•
STYLE DESIGNATOR: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
•
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER: 1.203 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN HOLES: 2.453 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.890 INCHES NOMINAL IN
•
HEIGHT: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CHROMATE
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541C1.3 MIL SPEC SINGLE TREATMENT RESPONSE
STYLE DESIGNATORROUND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER1.203 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN HOLES2.453 INCHES NOMINAL IN
INSIDE DIAMETER1.890 INCHES NOMINAL IN
HEIGHT0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMATE
MATERIALALUMINUM ALLOY 6061
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
NAS1677D12-22NReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
Ready to buy GC503A2EB?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is GC503A2EB?
GC503A2EB is a CLAMP,INSTRUMENT MOUNTING.
What parts can replace GC503A2EB?
There is 1 known substitute for GC503A2EB: NAS1677D12-22N. Substitute compatibility should be verified for your specific system.
What is the NSN for GC503A2EB?
GC503A2EB is cataloged in the U.S. Government catalog under NSN 5340-01-415-6129. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — GC503A2EB

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.