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Technical Data Sheet
PartsTable / COMPONENT / 2HK99
2HK99 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include end_item_identification: 2330-01-303-5197 PLS TRAILER, part_name_assigned_by_controlling_agency: BLOCK BEARING UPPER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-01-359-6862, 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
2HK99
NSN: 3130-01-359-6862
FSC: 3130
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
end_item_identification2330-01-303-5197 PLS TRAILER
part_name_assigned_by_controlling_agencyBLOCK BEARING UPPER
NSN3130-01-359-6862
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 2HK99 · 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION2330-01-303-5197 PLS TRAILER
PART NAME ASSIGNED BY CONTROLLING AGENCYBLOCK BEARING UPPER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
540040021Interchangeable
interchangeable cross-reference
interchangeable
SN74LS21NInterchangeable
interchangeable cross-reference
interchangeable
172-0021Interchangeable
interchangeable cross-reference
interchangeable
305210Interchangeable
Same NIIN cross-reference
interchangeable
R305210Interchangeable
Same NIIN cross-reference
interchangeable
3150-Y-1715-SInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2HK99?
2HK99 is a HOUSING,BEARING UNIT.
What parts can replace 2HK99?
There are 6 known substitutes for 2HK99: 540040021, SN74LS21N, 172-0021 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2HK99?
2HK99 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3130-01-359-6862. 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: July 2026