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7931K85 — BEARING,COMPOSITE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

7931K85: BEARING,COMPOSITE.

The BEARING,COMPOSITE is a the manufacturer industrial component. Key specifications include overall_diameter: 1.000 INCHES NOMINAL IN, special_features: STEEL-BACKED PTFE COMPOSITE BEARING FOR 7/8 INCH SHAFT DIA, 1.000 INCH OD, 7/8 INCH LG IN, end_item_identification: 2355-01-539-3589;LIGHT ARMORED VEHICLE, part_name_assigned_by_controlling_agency: BEARING,COMPOSITE. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-596-4978, 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
7931K85
NSN: 3120-01-596-4978
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
overall_diameter1.000 INCHES NOMINAL IN
special_featuresSTEEL-BACKED PTFE COMPOSITE BEARING FOR 7/8 INCH SHAFT DIA, 1.000 INCH OD, 7/8 INCH LG IN
end_item_identification2355-01-539-3589;LIGHT ARMORED VEHICLE
part_name_assigned_by_controlling_agencyBEARING,COMPOSITE
NSN3120-01-596-4978
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 7931K85 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.000 INCHES NOMINAL IN
SPECIAL FEATURESSTEEL-BACKED PTFE COMPOSITE BEARING FOR 7/8 INCH SHAFT DIA, 1.000 INCH OD, 7/8 INCH LG IN
PART NAME ASSIGNED BY CONTROLLING AGENCYBEARING,COMPOSITE
END ITEM IDENTIFICATION2355-01-539-3589;LIGHT ARMORED VEHICLE
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
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 7931K85?
7931K85 is a BEARING,COMPOSITE.
What is the NSN for 7931K85?
7931K85 is cataloged in the U.S. Government catalog under NSN 3120-01-596-4978. 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.