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520007 — 520007

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

520007: 520007.

The 520007 is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, hole_diameter: 0.518 INCHES NOMINAL IN, outside_diameter: 1.680 INCHES NOMINAL IN, style_designator: CONVEX, material_thickness: 0.180 INCHES NOMINAL IN, material_document_and_classification: MIL-S-18729,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-573-6202, 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
520007
NSN: 5310-00-573-6202
NIINs: 005736202, 010708742
FSC: 5310 — Nuts and Washers
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
hole_diameter0.518 INCHES NOMINAL IN
outside_diameter1.680 INCHES NOMINAL IN
style_designatorCONVEX
material_thickness0.180 INCHES NOMINAL IN
material_document_and_classificationMIL-S-18729,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-573-6202
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 520007 · 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
•
STYLE DESIGNATOR: CONVEX
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18729,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.680 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.180 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 4130 OVERALL
•
HOLE DIAMETER: 0.518 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORCONVEX
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18729,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.680 INCHES NOMINAL IN
MATERIAL THICKNESS0.180 INCHES NOMINAL IN
MATERIALSTEEL COMP 4130 OVERALL
HOLE DIAMETER0.518 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
5310PL1869588Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 520007?
520007 is a 520007.
What parts can replace 520007?
There is 1 known substitute for 520007: 5310PL1869588. Substitute compatibility should be verified for your specific system.
What is the NSN for 520007?
520007 is cataloged in the U.S. Government catalog under NSN 5310-00-573-6202. 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.