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5187128 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5187128: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, special_features: HOLES COUNTERSUNK 82.0 DEGREES BY 0.235 IN. DIA IN, attachment_method: ROUND HOLE, surface_treatment: ANODIZE OVERALL, peripheral_diameter: 1.558 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN, center_hole_diameter: 0.385 INCHES MINIMUM AND 0.387 INCHES MAXIMUM IN.

This part is cataloged in the U.S. Government catalog under NSN 5330-01-296-0383, 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
5187128
NSN: 5330-01-296-0383
FSC: 5330 — Packing and Gasket Materials
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
special_featuresHOLES COUNTERSUNK 82.0 DEGREES BY 0.235 IN. DIA IN
attachment_methodROUND HOLE
surface_treatmentANODIZE OVERALL
peripheral_diameter1.558 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
center_hole_diameter0.385 INCHES MINIMUM AND 0.387 INCHES MAXIMUM IN
cross-sectional_height0.090 INCHES NOMINAL IN
attachment_hole_diameter0.126 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
attachment_feature_quantity4
attachment_feature_circle_diameter1.250 INCHES NOMINAL SINGLE CIRCLE IN
material_document_and_classificationQQ-A-225/8 6061-T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5330-01-296-0383
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5187128 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
•
ATTACHMENT HOLE DIAMETER: 0.126 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
•
ATTACHMENT FEATURE QUANTITY: 4
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.090 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 6061-T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
ATTACHMENT FEATURE CIRCLE DIAMETER: 1.250 INCHES NOMINAL SINGLE CIRCLE IN
•
PERIPHERAL DIAMETER: 1.558 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
ATTACHMENT HOLE DIAMETER0.126 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
ATTACHMENT FEATURE QUANTITY4
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CROSS-SECTIONAL HEIGHT0.090 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 6061-T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
ATTACHMENT FEATURE CIRCLE DIAMETER1.250 INCHES NOMINAL SINGLE CIRCLE IN
PERIPHERAL DIAMETER1.558 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
SPECIAL FEATURESHOLES COUNTERSUNK 82.0 DEGREES BY 0.235 IN. DIA IN
SURFACE TREATMENTANODIZE OVERALL
CENTER HOLE DIAMETER0.385 INCHES MINIMUM AND 0.387 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
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)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5187128?
5187128 is a RETAINER,PACKING.
What is the NSN for 5187128?
5187128 is cataloged in the U.S. Government catalog under NSN 5330-01-296-0383. 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.