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Technical Data Sheet
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12Z5018-229 — Technical Data Sheet

✓ 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: STEEL CORROSION RESISTING, ring_style: INTERNAL, usage_design: INTERNAL, major_thickness: 0.093 INCHES NOMINAL IN, minor_thickness: 0.068 INCHES NOMINAL IN, outside_diameter: 3.245 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5325-00-576-2458, 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
12Z5018-229
NSN: 5325-00-576-2458
FSC: 5325
CAGE: 94135 — NAVAL ORDNANCE STANDARDS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
ring_styleINTERNAL
usage_designINTERNAL
major_thickness0.093 INCHES NOMINAL IN
minor_thickness0.068 INCHES NOMINAL IN
outside_diameter3.245 INCHES NOMINAL IN
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleBEVELED ONE OUTSIDE CORNER
NSN5325-00-576-2458
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12Z5018-229 · 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
•
RING STYLE: INTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: BEVELED ONE OUTSIDE CORNER
•
OUTSIDE DIAMETER: 3.245 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
•
SURFACE TREATMENT: PASSIVATE
•
MINOR THICKNESS: 0.068 INCHES NOMINAL IN
•
USAGE DESIGN: INTERNAL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
RING STYLEINTERNAL
CROSS-SECTIONAL SHAPE STYLEBEVELED ONE OUTSIDE CORNER
OUTSIDE DIAMETER3.245 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
SURFACE TREATMENTPASSIVATE
MINOR THICKNESS0.068 INCHES NOMINAL IN
USAGE DESIGNINTERNAL
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIAL HARDNESS RATING44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
MAJOR THICKNESS0.093 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
466078InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1N964BInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
USN1N964BInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
52-5003InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
S8258-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
N5002-300WInterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12Z5018-229?
12Z5018-229 is a RING,RETAINING.
What parts can replace 12Z5018-229?
There are 8 known substitutes for 12Z5018-229: 466078, 1N964B, USN1N964B and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12Z5018-229?
12Z5018-229 is cataloged in the Federal Logistics Information System under NSN 5325-00-576-2458. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026