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90905A651 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90905A651: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, ring_style: SPLIT, inside_diameter: 0.455 INCHES NOMINAL IN, strength_rating: ERR-060, outside_diameter: 0.545 INCHES NOMINAL IN, special_features: B85-B95 ROCKWELL HARDNESS. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-549-4745, 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
90905A651
NSN: 5325-01-549-4745
FSC: 5325 — Fastening Devices
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
ring_styleSPLIT
inside_diameter0.455 INCHES NOMINAL IN
strength_ratingERR-060
outside_diameter0.545 INCHES NOMINAL IN
special_featuresB85-B95 ROCKWELL HARDNESS
material_diameter0.090 INCHES NOMINAL IN
end_item_identification5985-01-532-0681;2.5 METER ANTENNA
cross-sectional_shape_styleROUND
part_name_assigned_by_controlling_agencySPLIT RING
NSN5325-01-549-4745
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90905A651 · 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
•
STRENGTH RATING: ERR-060
•
MATERIAL DIAMETER: 0.090 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 0.545 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.455 INCHES NOMINAL IN
•
RING STYLE: SPLIT
TECHNICAL CHARACTERISTICS
STRENGTH RATINGERR-060
MATERIAL DIAMETER0.090 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER0.545 INCHES NOMINAL IN
INSIDE DIAMETER0.455 INCHES NOMINAL IN
RING STYLESPLIT
SPECIAL FEATURESB85-B95 ROCKWELL HARDNESS
PART NAME ASSIGNED BY CONTROLLING AGENCYSPLIT RING
END ITEM IDENTIFICATION5985-01-532-0681;2.5 METER ANTENNA
MATERIALSTEEL CORROSION RESISTING
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90905A651?
90905A651 is a RING,RETAINING.
What is the NSN for 90905A651?
90905A651 is cataloged in the U.S. Government catalog under NSN 5325-01-549-4745. 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.