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528-7378786 PC57 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

528-7378786 PC57: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 1.992 INCHES MINIMUM AND 2.017 INCHES MAXIMUM IN, outside_diameter: 2.438 INCHES MINIMUM AND 2.468 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN, external_key_quantity: 13. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-468-7152, 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
528-7378786 PC57
NSN: 5310-01-468-7152
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter1.992 INCHES MINIMUM AND 2.017 INCHES MAXIMUM IN
outside_diameter2.438 INCHES MINIMUM AND 2.468 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
external_key_quantity13
end_item_identificationMONRAIL SWIT:WSD;TARAWA CLASSLHA
internal_prebent_key_width0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
external_straight_key_width0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
internal_prebent_key_length0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
overall_distance_including_keys3.031 INCHES MINIMUM AND 3.093 INCHES MAXIMUM IN
NSN5310-01-468-7152
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 528-7378786 PC57 · 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
•
INTERNAL PREBENT KEY WIDTH: 0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 3.031 INCHES MINIMUM AND 3.093 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 2.438 INCHES MINIMUM AND 2.468 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 13
•
INTERNAL PREBENT KEY LENGTH: 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS3.031 INCHES MINIMUM AND 3.093 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER2.438 INCHES MINIMUM AND 2.468 INCHES MAXIMUM IN
MATERIAL THICKNESS0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY13
INTERNAL PREBENT KEY LENGTH0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONMONRAIL SWIT:WSD;TARAWA CLASSLHA
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
7378786Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 528-7378786 PC57?
528-7378786 PC57 is a WASHER,KEY.
What parts can replace 528-7378786 PC57?
There is 1 known substitute for 528-7378786 PC57: 7378786. Substitute compatibility should be verified for your specific system.
What is the NSN for 528-7378786 PC57?
528-7378786 PC57 is cataloged in the U.S. Government catalog under NSN 5310-01-468-7152. 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.