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911B038449 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

911B038449: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, hole_diameter: 0.258 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN, overall_height: 0.125 INCHES NOMINAL IN, shoulder_height: 0.062 INCHES NOMINAL IN, outside_diameter: 0.420 INCHES NOMINAL IN, style_designator: SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-400-5843, 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
911B038449
NSN: 5310-01-400-5843
FSC: 5310 — Nuts and Washers
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
hole_diameter0.258 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
overall_height0.125 INCHES NOMINAL IN
shoulder_height0.062 INCHES NOMINAL IN
outside_diameter0.420 INCHES NOMINAL IN
style_designatorSHOULDERED
shoulder_diameter0.290 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
NSN5310-01-400-5843
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 911B038449 · 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
•
SHOULDER HEIGHT: 0.062 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED
•
OUTSIDE DIAMETER: 0.420 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.290 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 303 OVERALL
•
HOLE DIAMETER: 0.258 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.125 INCHES NOMINAL IN
SHOULDER HEIGHT0.062 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED
OUTSIDE DIAMETER0.420 INCHES NOMINAL IN
SHOULDER DIAMETER0.290 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 303 OVERALL
HOLE DIAMETER0.258 INCHES MINIMUM AND 0.263 INCHES MAXIMUM 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 911B038449?
911B038449 is a WASHER,SHOULDERED.
What is the NSN for 911B038449?
911B038449 is cataloged in the U.S. Government catalog under NSN 5310-01-400-5843. 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.