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Technical Data Sheet
PartsTable / COMPONENT / 258853
258853 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, overall_width: 0.4700 INCHES NOMINAL IN, outside_diameter: 60.0 MILLIMETERS NOMINAL MM, special_features: DUTY CLASS L SERIES, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-208-7351, 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
258853
NSN: 5306-00-208-7351
FSC: 5306
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.4700 INCHES NOMINAL IN
outside_diameter60.0 MILLIMETERS NOMINAL MM
special_featuresDUTY CLASS L SERIES
style_designatorNORMAL ANGLE
backface_corner_radius0.0500 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN5306-00-208-7351
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 258853 · 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
•
THREAD LENGTH: 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.062 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNF
•
HEAD STYLE: HEXAGON
•
HOLE CONFIGURATION STYLE: HEXAGON LONGITUDINAL HOLE
•
THREAD CLASS: 3A A
•
HOLE QUANTITY: 6
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
HOLE DIAMETER0.062 INCHES NOMINAL IN
FASTENER LENGTH0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNF
HEAD STYLEHEXAGON
HOLE CONFIGURATION STYLEHEXAGON LONGITUDINAL HOLE
THREAD CLASS3A A
HOLE QUANTITY6
HEAD HEIGHT0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH24
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
093718Interchangeable
interchangeable cross-reference
interchangeable
927434Interchangeable
interchangeable cross-reference
interchangeable
68111Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 258853?
258853 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 258853?
There are 3 known substitutes for 258853: 093718, 927434, 68111. Substitute compatibility should be verified for your specific system.
Is 258853 still available?
258853 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026