PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 2561019
2561019 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360, usage_design: EXTERNAL, inside_diameter: 0.348 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN, major_thickness: 0.070 INCHES NOMINAL IN, minor_thickness: 0.030 INCHES NOMINAL IN, outside_diameter: 0.438 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-457-6959, 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
2561019
NSN: 5325-00-457-6959
FSC: 5325
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360
usage_designEXTERNAL
inside_diameter0.348 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN
major_thickness0.070 INCHES NOMINAL IN
minor_thickness0.030 INCHES NOMINAL IN
outside_diameter0.438 INCHES NOMINAL IN
surface_treatmentCADMIUM
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleBEVELED ONE OUTSIDE CORNER
material_document_and_classificationQQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-00-457-6959
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2561019 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MAJOR THICKNESS: 0.070 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: COPPER ALLOY 360
•
USAGE DESIGN: EXTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: BEVELED ONE OUTSIDE CORNER
•
OUTSIDE DIAMETER: 0.438 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.348 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MAJOR THICKNESS0.070 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALCOPPER ALLOY 360
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLEBEVELED ONE OUTSIDE CORNER
OUTSIDE DIAMETER0.438 INCHES NOMINAL IN
INSIDE DIAMETER0.348 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
MINOR THICKNESS0.030 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
P96Interchangeable
interchangeable cross-reference
interchangeable
CP165Interchangeable
interchangeable cross-reference
interchangeable
630403Interchangeable
interchangeable cross-reference
interchangeable
W5-3Interchangeable
interchangeable cross-reference
interchangeable
W5-3BInterchangeable
interchangeable cross-reference
interchangeable
53Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2561019?
2561019 is a RING,RETAINING.
What parts can replace 2561019?
There are 13 known substitutes for 2561019: P96, CP165, 630403 and 10 more. Substitute compatibility should be verified for your specific system.
Is 2561019 still available?
2561019 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026