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369A1409 — WASHER,KEYWAY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

369A1409: WASHER,KEYWAY.

The WASHER,KEYWAY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1050 OR STEEL COMP 1074 OVERALL, hole_diameter: 0.695 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM, outside_diameter: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN, material_thickness: 0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN, internal_keyway_width: 0.216 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-945-0236, 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
369A1409
NSN: 5310-00-945-0236
FSC: 5310 — Nuts and Washers
CAGE: 8V613 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OR STEEL COMP 1074 OVERALL
hole_diameter0.695 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
outside_diameter1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
material_thickness0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
internal_keyway_width0.216 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
internal_keyway_quantity6
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_bottom_of_internal_keyway0.433 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
NSN5310-00-945-0236
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 369A1409 · 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
•
DISTANCE FROM CENTERLINE TO BOTTOM OF INTERNAL KEYWAY: 0.433 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
•
INTERNAL KEYWAY WIDTH: 0.216 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
•
INTERNAL KEYWAY QUANTITY: 6
•
MATERIAL THICKNESS: 0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1050 OR STEEL COMP 1074 OVERALL
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO BOTTOM OF INTERNAL KEYWAY0.433 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
INTERNAL KEYWAY WIDTH0.216 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
INTERNAL KEYWAY QUANTITY6
MATERIAL THICKNESS0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1050 OR STEEL COMP 1074 OVERALL
HOLE DIAMETER0.695 INCHES MINIMUM AND 0.700 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 369A1409?
369A1409 is a WASHER,KEYWAY.
What is the NSN for 369A1409?
369A1409 is cataloged in the U.S. Government catalog under NSN 5310-00-945-0236. 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.