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219038 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

219038: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN, outside_diameter: 0.406 INCHES NOMINAL0.406 INCHES NOMINAL IN, style_designator: FLAT EXTERNAL TEETH, surface_treatment: NICKEL OVERALL, material_thickness: 0.022 INCHES NOMINAL0.022 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-034-8803, 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
219038
NSN: 5310-01-034-8803
FSC: 5310 — Nuts and Washers
CAGE: 31361 — WOODWARD, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN
outside_diameter0.406 INCHES NOMINAL0.406 INCHES NOMINAL IN
style_designatorFLAT EXTERNAL TEETH
surface_treatmentNICKEL OVERALL
material_thickness0.022 INCHES NOMINAL0.022 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-034-8803
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 219038 · 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: QQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
OUTSIDE DIAMETER: 0.406 INCHES NOMINAL0.406 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.022 INCHES NOMINAL0.022 INCHES NOMINAL IN
•
SURFACE TREATMENT: NICKEL OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORFLAT EXTERNAL TEETH
OUTSIDE DIAMETER0.406 INCHES NOMINAL0.406 INCHES NOMINAL IN
MATERIAL THICKNESS0.022 INCHES NOMINAL0.022 INCHES NOMINAL IN
SURFACE TREATMENTNICKEL OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.188 INCHES NOMINAL0.188 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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 219038?
219038 is a WASHER,LOCK.
What is the NSN for 219038?
219038 is cataloged in the U.S. Government catalog under NSN 5310-01-034-8803. 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.