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5730819 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5730819: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 1.520 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN, hardness_rating: 54.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM, outside_diameter: 3.000 INCHES NOMINAL IN, style_designator: KEY, surface_treatment: PHOSPHATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-160-2044, 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
5730819
NSN: 5310-01-160-2044
FSC: 5310 — Nuts and Washers
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter1.520 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN
hardness_rating54.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM
outside_diameter3.000 INCHES NOMINAL IN
style_designatorKEY
surface_treatmentPHOSPHATE OVERALL
material_thickness0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.265 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
NSN5310-01-160-2044
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5730819 · 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 STRAIGHT KEY WIDTH: 0.265 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
•
HARDNESS RATING: 54.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 3.000 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
MATERIAL: STEEL OVERALL
•
INTERNAL KEY QUANTITY: 1
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.265 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
HARDNESS RATING54.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORKEY
OUTSIDE DIAMETER3.000 INCHES NOMINAL IN
MATERIAL THICKNESS0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL OVERALL
INTERNAL KEY QUANTITY1
HOLE DIAMETER1.520 INCHES MINIMUM AND 1.530 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 1
H1005726Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5730819?
5730819 is a WASHER,KEY.
What parts can replace 5730819?
There is 1 known substitute for 5730819: H1005726. Substitute compatibility should be verified for your specific system.
What is the NSN for 5730819?
5730819 is cataloged in the U.S. Government catalog under NSN 5310-01-160-2044. 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.