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IN287 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

IN287: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, inside_diameter: 3.045 INCHES MINIMUM AND 3.057 INCHES MAXIMUM IN, outside_diameter: 3.086 INCHES MINIMUM AND 3.166 INCHES MAXIMUM IN, material_diameter: 0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN, end_item_identification: 2520-01-471-1325 TRANSMISSION, part_name_assigned_by_controlling_agency: INTRNAL NOTCHED RING. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-589-1325, 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
IN287
NSN: 5325-01-589-1325
FSC: 5325 — Fastening Devices
CAGE: 3Z4D8 — LLC RING MASTERS (USA)
SPECIFICATIONS
materialSTEEL
inside_diameter3.045 INCHES MINIMUM AND 3.057 INCHES MAXIMUM IN
outside_diameter3.086 INCHES MINIMUM AND 3.166 INCHES MAXIMUM IN
material_diameter0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
end_item_identification2520-01-471-1325 TRANSMISSION
part_name_assigned_by_controlling_agencyINTRNAL NOTCHED RING
NSN5325-01-589-1325
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: IN287 · 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
•
MATERIAL DIAMETER: 0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 3.086 INCHES MINIMUM AND 3.166 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 3.045 INCHES MINIMUM AND 3.057 INCHES MAXIMUM IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
MATERIAL DIAMETER0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
OUTSIDE DIAMETER3.086 INCHES MINIMUM AND 3.166 INCHES MAXIMUM IN
INSIDE DIAMETER3.045 INCHES MINIMUM AND 3.057 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYINTRNAL NOTCHED RING
END ITEM IDENTIFICATION2520-01-471-1325 TRANSMISSION
MATERIALSTEEL
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 1
12446374Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 IN287?
IN287 is a RING,RETAINING.
What parts can replace IN287?
There is 1 known substitute for IN287: 12446374. Substitute compatibility should be verified for your specific system.
What is the NSN for IN287?
IN287 is cataloged in the U.S. Government catalog under NSN 5325-01-589-1325. 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.