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3-13128-3 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3-13128-3: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: ROUND, nut_diameter: 5.620 INCHES NOMINAL IN, nut_thickness: 0.190 INCHES NOMINAL IN, thread_series: BUTTRESS, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-406-6803, 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
3-13128-3
NSN: 5310-00-406-6803
FSC: 5310 — Nuts and Washers
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleROUND
nut_diameter5.620 INCHES NOMINAL IN
nut_thickness0.190 INCHES NOMINAL IN
thread_seriesBUTTRESS
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
nominal_thread_size4.750 INCHES IN
drive_point_diameter0.328 INCHES NOMINAL IN
drive_point_quantity4
drilled_hole_diameter0.328 INCHES NOMINAL IN
hole_type_and_quantity4 DRILLED
NSN5310-00-406-6803
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3-13128-3 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: BUTTRESS
•
HOLE CONFIGURATION STYLE: CONFIGURATION J
•
THREAD PITCH DIAMETERS: +4.7125 TO 4.7177 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 4.750 INCHES IN
•
NUT DIAMETER: 5.620 INCHES NOMINAL IN
•
NUT THICKNESS: 0.190 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESBUTTRESS
HOLE CONFIGURATION STYLECONFIGURATION J
THREAD PITCH DIAMETERS+4.7125 TO 4.7177 INCHES IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE4.750 INCHES IN
NUT DIAMETER5.620 INCHES NOMINAL IN
NUT THICKNESS0.190 INCHES NOMINAL IN
DRIVE POINT DIAMETER0.328 INCHES NOMINAL IN
DRILLED HOLE DIAMETER0.328 INCHES NOMINAL IN
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

No substitute or cross-reference records for this part.

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 3-13128-3?
3-13128-3 is a NUT,PLAIN,ROUND.
What is the NSN for 3-13128-3?
3-13128-3 is cataloged in the U.S. Government catalog under NSN 5310-00-406-6803. 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.