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GB550DR — BRACKET,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

GB550DR: BRACKET,MOUNTING.

The BRACKET,MOUNTING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061, overall_width: 0.950 INCHES NOMINAL IN, overall_height: 0.163 INCHES NOMINAL IN, overall_length: 1.380 INCHES NOMINAL IN, features_provided: RETAINING LUG, surface_treatment: CHROMATE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-416-1287, 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
GB550DR
NSN: 5340-01-416-1287
FSC: 5340 — Hardware, Commercial
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
overall_width0.950 INCHES NOMINAL IN
overall_height0.163 INCHES NOMINAL IN
overall_length1.380 INCHES NOMINAL IN
features_providedRETAINING LUG
surface_treatmentCHROMATE
mounting_hole_typePLAIN
mounting_hole_quantity4
material_document_and_classificationQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-C-5541 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5340-01-416-1287
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GB550DR 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
•
MOUNTING HOLE QUANTITY: 4
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
•
FEATURES PROVIDED: RETAINING LUG
•
SURFACE TREATMENT: CHROMATE
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY4
OVERALL HEIGHT0.163 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH1.380 INCHES NOMINAL IN
OVERALL WIDTH0.950 INCHES NOMINAL IN
FEATURES PROVIDEDRETAINING LUG
SURFACE TREATMENTCHROMATE
MATERIALALUMINUM ALLOY 6061
MOUNTING HOLE TYPEPLAIN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is GB550DR?
GB550DR is a BRACKET,MOUNTING.
What is the NSN for GB550DR?
GB550DR is cataloged in the U.S. Government catalog under NSN 5340-01-416-1287. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.