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X2-418B — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

X2-418B: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN, outside_diameter: 0.275 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN, style_designator: FLAT EXTERNAL TEETH, material_thickness: 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-827-5649, 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
X2-418B
NSN: 5310-00-827-5649
NIINs: 008275649, 012705597
FSC: 5310 — Nuts and Washers
CAGE: 78452 — MICRODOT INC EVERLOCK CHICAGO DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
outside_diameter0.275 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
style_designatorFLAT EXTERNAL TEETH
material_thickness0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
NSN5310-00-827-5649
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X2-418B · 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
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
OUTSIDE DIAMETER: 0.275 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
•
HOLE DIAMETER: 0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT EXTERNAL TEETH
OUTSIDE DIAMETER0.275 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
MATERIAL THICKNESS0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
HOLE DIAMETER0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is X2-418B?
X2-418B is a WASHER,FLAT.
What is the NSN for X2-418B?
X2-418B is cataloged in the U.S. Government catalog under NSN 5310-00-827-5649. 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.