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Technical Data Sheet
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05309 — Technical Data Sheet

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King · 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 ADAPTER,BATTERY TERMINAL is a King cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: STEEL, ring_style: EXTERNAL BOWED, usage_design: EXTERNAL, end_play_takeup: 0.015 INCHES NOMINAL IN, inside_diameter: 0.221 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN, major_thickness: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System under NSN 5325-00-680-4619, 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
05309
NSN: 5325-00-680-4619
FSC: 5325
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL
ring_styleEXTERNAL BOWED
usage_designEXTERNAL
end_play_takeup0.015 INCHES NOMINAL IN
inside_diameter0.221 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN
major_thickness0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
end_item_identification170' PATROL COASTAL (PC-1) CLASS SHIP
material_hardness_rating69.5 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 73.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
cross-sectional_shape_styleRECTANGULAR
nondefinitive_spec/std_dataMS16628-1025 REFERENCE NUMBER
NSN5325-00-680-4619
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 05309 · King ⚠ 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
•
MAJOR THICKNESS: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
•
USAGE DESIGN: EXTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
END PLAY TAKEUP: 0.015 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
NONDEFINITIVE SPEC/STD DATA: MS16628-1025 REFERENCE NUMBER
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,FS1066 THRU FS1090 FED STD SINGLE MATERIAL RESPONSE
•
SURFACE TREATMENT: CADMIUM AND CHROMATE
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
MAJOR THICKNESS0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
END PLAY TAKEUP0.015 INCHES NOMINAL IN
MATERIALSTEEL
NONDEFINITIVE SPEC/STD DATAMS16628-1025 REFERENCE NUMBER
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,FS1066 THRU FS1090 FED STD SINGLE MATERIAL RESPONSE
SURFACE TREATMENTCADMIUM AND CHROMATE
MATERIAL HARDNESS RATING69.5 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 73.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
862L-NEGInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
862L-NInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
9081InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
TICS.06.10046AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
9081-VC-006InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
163428InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 05309?
05309 is a ADAPTER,BATTERY TERMINAL manufactured by King.
What parts can replace 05309?
There are 14 known substitutes for 05309: 862L-NEG, 862L-N, 9081 and 11 more. Substitute compatibility should be verified for your specific system.
Is 05309 still available?
05309 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: September 2026