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K6643225PC15 — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

K6643225PC15: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SLEEVE, nut_length: 4.760 INCHES NOMINAL IN, nut_diameter: 5.380 INCHES NOMINAL IN, thread_class: 3B, thread_series: UN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-386-6796, 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
K6643225PC15
NSN: 5310-01-386-6796
FSC: 5310 — Nuts and Washers
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSLEEVE
nut_length4.760 INCHES NOMINAL IN
nut_diameter5.380 INCHES NOMINAL IN
thread_class3B
thread_seriesUN
boss_thickness1.760 INCHES NOMINAL OVERALL IN
thread_directionRIGHT-HAND
surface_treatmentCOPPER OVERALL
nominal_thread_size1.250 INCHES IN
counterbore_diameter3.620 INCHES NOMINAL NUT IN
cross-sectional_shapeROUND NUT
NSN5310-01-386-6796
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: K6643225PC15 · 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
•
NUT LENGTH: 4.760 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
NUT COUNTERBORE DEPTH: 4.000 INCHES NOMINAL NUT IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
NUT DIAMETER: 5.380 INCHES NOMINAL IN
•
COUNTERBORE DIAMETER: 3.620 INCHES NOMINAL NUT IN
•
BOSS THICKNESS: 1.760 INCHES NOMINAL OVERALL IN
TECHNICAL CHARACTERISTICS
NUT LENGTH4.760 INCHES NOMINAL IN
THREAD SERIESUN
NUT COUNTERBORE DEPTH4.000 INCHES NOMINAL NUT IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.250 INCHES IN
NUT DIAMETER5.380 INCHES NOMINAL IN
COUNTERBORE DIAMETER3.620 INCHES NOMINAL NUT IN
BOSS THICKNESS1.760 INCHES NOMINAL OVERALL IN
BOSS WIDTH ACROSS FLATS3.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEHEXAGONAL BOSS
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 2
6643225-015Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
6643225-15Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is K6643225PC15?
K6643225PC15 is a NUT,SLEEVE.
What parts can replace K6643225PC15?
There are 2 known substitutes for K6643225PC15: 6643225-015, 6643225-15. Substitute compatibility should be verified for your specific system.
What is the NSN for K6643225PC15?
K6643225PC15 is cataloged in the U.S. Government catalog under NSN 5310-01-386-6796. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.