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Technical Data Sheet
PartsTable / COMPONENT / 9573-1
9573-1 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

BRACKET,STRUCTURAL COMPONENT,AIR. Key specifications include overall_width: 2.062 INCHES NOMINAL IN, overall_length: 3.875 INCHES NOMINAL IN, aircraft_mission_design_series: HU-16. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-261-7160, 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
9573-1
NSN: 5310-00-261-7160
FSC: 5310
CAGE: 38597 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
overall_width2.062 INCHES NOMINAL IN
overall_length3.875 INCHES NOMINAL IN
aircraft_mission_design_seriesHU-16
NSN5310-00-261-7160
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9573-1 · 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
•
MATERIAL THICKNESS: 0.022 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
SURFACE TREATMENT: NICKEL OVERALL
•
MATERIAL: STEEL OVERALL
•
OUTSIDE DIAMETER: 0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.022 INCHES NOMINAL IN
STYLE DESIGNATORFLAT INTERNAL TEETH
SURFACE TREATMENTNICKEL OVERALL
END ITEM IDENTIFICATIONW/S:STURGEON CLASS SSN (637); RADAR SET, LIGHTWEIGHT 3D (AN/TPS-59); HELICOPTER, MH-53E; TRANSPONDER (TSEC/KIT-1A); INTERROGATION COMPUTER (KIR-1A); SPRUANCE CLASS DD (963); LOS ANGELES CLASS SSN (688); AIRCRAFT, C-2A (REPROCURED); FORRESTAL CLASS CV A
MATERIALSTEEL OVERALL
OUTSIDE DIAMETER0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
HOLE DIAMETER0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
E00502Interchangeable
interchangeable cross-reference
interchangeable
DRILLSTEELInterchangeable
interchangeable cross-reference
interchangeable
30602Interchangeable
interchangeable cross-reference
interchangeable
95731Interchangeable
interchangeable cross-reference
interchangeable
30-189Interchangeable
interchangeable cross-reference
interchangeable
30-202Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9573-1?
9573-1 is a BRACKET,STRUCTURAL COMPONENT,AIR.
What parts can replace 9573-1?
There are 20 known substitutes for 9573-1: E00502, DRILLSTEEL, 30602 and 17 more. Substitute compatibility should be verified for your specific system.
Is 9573-1 still available?
9573-1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026