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68251 ✓ Verified by PartsTable
Esselte · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The CHARGER,BATTERY is a Esselte cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: STEEL OVERALL, thickness: 0.125 INCHES NOMINAL IN, hole_diameter: 0.406 INCHES NOMINAL IN, overall_depth: 133.40 MILLIMETERS NOMINAL MM, overall_width: 101.60 MILLIMETERS NOMINAL MM, overall_height: 53.80 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-907-9008, 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
68251
NSN: 5310-00-907-9008
FSC: 5310
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.125 INCHES NOMINAL IN
hole_diameter0.406 INCHES NOMINAL IN
overall_depth133.40 MILLIMETERS NOMINAL MM
overall_width101.60 MILLIMETERS NOMINAL MM
overall_height53.80 MILLIMETERS NOMINAL MM
heat_medium_typeAIR
overall_diameter0.719 INCHES NOMINAL IN
special_featuresCONTAINS CHARGER AND POWER SUPPLY,1 POSITION MULTI-CHEMISTRY FAST CHARGING
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-907-9008
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 68251 · Esselte ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 0.719 INCHES NOMINAL IN
•
THICKNESS: 0.125 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.406 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER0.719 INCHES NOMINAL IN
THICKNESS0.125 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.406 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
68251Interchangeable
interchangeable cross-reference
interchangeable
65251Interchangeable
interchangeable cross-reference
interchangeable
TANDEM 70Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 68251?
68251 is a CHARGER,BATTERY manufactured by Esselte.
What parts can replace 68251?
There are 3 known substitutes for 68251: 68251, 65251, TANDEM 70. Substitute compatibility should be verified for your specific system.
What is the NSN for 68251?
68251 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-907-9008. 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.
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Last verified: July 2026