PartsTable
Technical Data Sheet
PartsTable / MRO / 21787
21787 ✓ Verified by PartsTable
Leitz · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The BATTERY,NONRECHARGEABLE is a Leitz cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include color: AMBER INSCRIPTION BACKGROUND, shape: RECTANGULAR, length: 0.979 INCHES NOMINAL IN, diameter: 2.000 INCHES NOMINAL IN, material: STEEL COMP 303 OVERALL, cut_depth: 0.750 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-203-9889, 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
MRO→ MRO_GENERAL→ 21787
NSN: 3455-00-203-9889
FSC: 3455
CAGE: 07429 — BLACK AND DECKER US INC (USA)
SPECIFICATIONS
colorAMBER INSCRIPTION BACKGROUND
shapeRECTANGULAR
length0.979 INCHES NOMINAL IN
diameter2.000 INCHES NOMINAL IN
materialSTEEL COMP 303 OVERALL
cut_depth0.750 INCHES NOMINAL IN
body_styleHOLE MOUNTED
inscriptionLOW AND RESERVOIR AND LEVEL FACE
thread_class2B LEFT INTERNAL (INCLUDES THRU THREAD)
overall_width0.594 INCHES NOMINAL IN
thread_length0.979 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
inclosure_typeFULLY INCLOSED
NSN3455-00-203-9889
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Leitz BATTERY,NONRECHARGEABLE TITLE COMPONENT PN 21787 MFR Leitz BATTERY,NONRECHARGEABL
KEY FEATURES
•
MATERIAL: STEEL
•
TEETH QUANTITY PER UNIT OF MEASURE: 6 PER INCH
•
DIAMETER: 2.000 INCHES NOMINAL IN
•
CUT DEPTH: 0.750 INCHES NOMINAL IN
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)
MATERIALSTEEL
TEETH QUANTITY PER UNIT OF MEASURE6 PER INCH
DIAMETER2.000 INCHES NOMINAL IN
CUT DEPTH0.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
21787Interchangeable
interchangeable cross-reference
interchangeable
AML51-F20AInterchangeable
interchangeable cross-reference
interchangeable
5120PL0842886Interchangeable
interchangeable cross-reference
interchangeable
J21787Interchangeable
interchangeable cross-reference
interchangeable
6515NCM116014Interchangeable
interchangeable cross-reference
interchangeable
11141-000100Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21787?
21787 is a BATTERY,NONRECHARGEABLE manufactured by Leitz. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21787?
There are 8 known substitutes for 21787: 21787, AML51-F20A, 5120PL0842886 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21787?
21787 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-203-9889. 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