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5548003 — NUT,PLAIN,KNURLED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5548003: NUT,PLAIN,KNURLED.

The NUT,PLAIN,KNURLED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: KNURLED, nut_diameter: 3.750 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.380 INCHES NOMINAL IN, thread_series: UN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-330-0868, 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
5548003
NSN: 5310-01-330-0868
NIINs: 013300868, 013894171
FSC: 5310 — Nuts and Washers
CAGE: 16623 — UNITED STATES DEPARTMENT OF THE NAVY DBA NAVAL UNDERSEA WARFARE CTR DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleKNURLED
nut_diameter3.750 INCHES NOMINAL IN
thread_class2B
nut_thickness0.380 INCHES NOMINAL IN
thread_seriesUN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
nominal_thread_size3.000 INCHES IN
thread_quantity_per_inch12
material_document_and_classificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-330-0868
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5548003 · 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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5548003?
5548003 is a NUT,PLAIN,KNURLED.
What is the NSN for 5548003?
5548003 is cataloged in the U.S. Government catalog under NSN 5310-01-330-0868. 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.