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N403P19C6 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

N403P19C6: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN, style_designator: FLAT EXTERNAL TEETH, surface_treatment: CADMIUM AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-804-2867, 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
N403P19C6
NSN: 5310-00-804-2867
FSC: 5310 — Nuts and Washers
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
style_designatorFLAT EXTERNAL TEETH
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
NSN5310-00-804-2867
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N403P19C6 · 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
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
OUTSIDE DIAMETER: 0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORFLAT EXTERNAL TEETH
OUTSIDE DIAMETER0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
MATERIAL THICKNESS0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.204 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is N403P19C6?
N403P19C6 is a WASHER,LOCK.
What is the NSN for N403P19C6?
N403P19C6 is cataloged in the U.S. Government catalog under NSN 5310-00-804-2867. 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.