PartsTable
Technical Data Sheet
T640 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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 BATTERY,NONRECHARGEABLE is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include shape: CYLINDRICAL, diameter: 0.495 INCHES MINIMUM AND 0.497 INCHES MAXIMUM IN, jaw_type: DOUBLE CURVED, material: STEEL CORROSION RESISTING OVERALL, grip_type: FINGER RING, joint_type: BOX LOCK. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-290-6132, 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 T640
NSN: 5315-00-290-6132
FSC: 5315
CAGE: 74410 — SAF-HOLLAND, INC. (USA)
SPECIFICATIONS
shapeCYLINDRICAL
diameter0.495 INCHES MINIMUM AND 0.497 INCHES MAXIMUM IN
jaw_typeDOUBLE CURVED
materialSTEEL CORROSION RESISTING OVERALL
grip_typeFINGER RING
joint_typeBOX LOCK
buffer_size64.0 MEGABYTES
unit_designDESK TOP
printer_typeLASER
usage_designHEARING AIDS AND RADIO
overall_length9.500 INCHES NOMINAL IN
undercut_width0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
NSN5315-00-290-6132
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: T640 · OEM ⚠ 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
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
FIRST HOLE DIAMETER: 0.125 INCHES NOMINAL IN
HOLE ARRANGEMENT STYLE: DRILLED THRU CENTER
FIRST END TAPER LENGTH: 0.031 INCHES NOMINAL IN
SURFACE TREATMENT: CADMIUM OVERALL
FIRST END TAPER ANGLE: 45.0 DEGREES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST END LOCATION: BOTH ENDS
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)
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
FIRST HOLE DIAMETER0.125 INCHES NOMINAL IN
HOLE ARRANGEMENT STYLEDRILLED THRU CENTER
FIRST END TAPER LENGTH0.031 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST END LOCATIONBOTH ENDS
MATERIALSTEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8740 OVERALL
EFFECTIVE LENGTH2.062 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
E640Interchangeable
interchangeable cross-reference
interchangeable
HG 640Interchangeable
interchangeable cross-reference
interchangeable
M30Interchangeable
interchangeable cross-reference
interchangeable
G-2624Interchangeable
interchangeable cross-reference
interchangeable
T640Interchangeable
interchangeable cross-reference
interchangeable
20G0100Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T640?
T640 is a BATTERY,NONRECHARGEABLE. It is classified as a MRO (MRO_GENERAL).
What parts can replace T640?
There are 9 known substitutes for T640: E640, HG 640, M30 and 6 more. Substitute compatibility should be verified for your specific system.
Is T640 still available?
T640 is currently cancelled.
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