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4074426 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4074426: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 OVERALL, hole_diameter: 0.558 INCHES MINIMUM AND 0.568 INCHES MAXIMUM IN, outside_diameter: 0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN, special_features: WASHER,KEY-ANNEALED, style_designator: KEY, material_thickness: 0.019 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-316-7083, 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
4074426
NSN: 5310-01-316-7083
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 321 OVERALL
hole_diameter0.558 INCHES MINIMUM AND 0.568 INCHES MAXIMUM IN
outside_diameter0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
special_featuresWASHER,KEY-ANNEALED
style_designatorKEY
material_thickness0.019 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
external_prebent_key_width0.380 INCHES NOMINAL IN
external_prebent_key_length0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
internal_prebent_key_length0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
overall_distance_including_keys0.765 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN
material_document_and_classificationAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_inside_of_prebent_key0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
NSN5310-01-316-7083
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4074426 · 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 INSIDE OF PREBENT KEY: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY LENGTH: 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.765 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.019 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
•
INTERNAL PREBENT KEY LENGTH: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY LENGTH0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS0.765 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
MATERIAL THICKNESS0.019 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
INTERNAL PREBENT KEY LENGTH0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
SPECIAL FEATURESWASHER,KEY-ANNEALED
EXTERNAL PREBENT KEY WIDTH0.380 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 1
5310PL0787450Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4074426?
4074426 is a WASHER,KEY.
What parts can replace 4074426?
There is 1 known substitute for 4074426: 5310PL0787450. Substitute compatibility should be verified for your specific system.
What is the NSN for 4074426?
4074426 is cataloged in the U.S. Government catalog under NSN 5310-01-316-7083. 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.