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56549 ✓ Verified by PartsTable
Tactic · NUT WASHER
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

This product is made in Finland, at Tactic Games' own responsible factory. Our own production ensures the traceability of all materials, and we were awarded the FSC certificate in 2021. We also monitor our carbon footprint closely.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-033-4752, 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
56549
NSN: 5310-00-033-4752
FSC: 5310
CAGE: 35918 — HORIZON AEROSPACE LLC DBA MAGNETICS DIVISION (USA)
SPECIFICATIONS
end_item_identification23N SHIP, OHIO CLASS SSN (TRIDENT)
NSN5310-00-033-4752
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 56549 · Tactic ⚠ 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
•
MATERIAL: COPPER ALLOY 510 OVERALL
•
SURFACE TREATMENT: NICKEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.092 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.0065 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY 510 OVERALL
SURFACE TREATMENTNICKEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
OVERALL HEIGHT0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
HOLE DIAMETER0.092 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
MATERIAL THICKNESS0.0065 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
56549Interchangeable
interchangeable cross-reference
interchangeable
CD5330-02513-002Interchangeable
interchangeable cross-reference
interchangeable
23516DInterchangeable
interchangeable cross-reference
interchangeable
854009Interchangeable
interchangeable cross-reference
interchangeable
16B854009Interchangeable
interchangeable cross-reference
interchangeable
MSS55597Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 56549?
56549 is a COUPLING HALF,QUICK DISCONNECT manufactured by Tactic.
What parts can replace 56549?
There are 8 known substitutes for 56549: 56549, CD5330-02513-002, 23516D and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 56549?
56549 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-033-4752. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026