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530741 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

530741: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, recess_depth: 0.190 INCHES NOMINAL IN, hole_diameter: 0.3906 INCHES NOMINAL IN, overall_height: 0.280 INCHES NOMINAL IN, outside_diameter: 1.560 INCHES NOMINAL IN, style_designator: RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-023-6490, 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
530741
NSN: 5310-01-023-6490
FSC: 5310 — Nuts and Washers
CAGE: 63728 — SEALCRAFT CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
recess_depth0.190 INCHES NOMINAL IN
hole_diameter0.3906 INCHES NOMINAL IN
overall_height0.280 INCHES NOMINAL IN
outside_diameter1.560 INCHES NOMINAL IN
style_designatorRECESSED
features_providedMAGNETIZED
surface_treatmentCADMIUM OVERALL
material_thickness0.090 INCHES NOMINAL IN
material_document_and_classificationAISI,C1020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-023-6490
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 530741 · 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: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI,C1020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.560 INCHES NOMINAL IN
•
RECESS DEPTH: 0.190 INCHES NOMINAL IN
•
FEATURES PROVIDED: MAGNETIZED
•
MATERIAL THICKNESS: 0.090 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.280 INCHES NOMINAL IN
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONAISI,C1020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.560 INCHES NOMINAL IN
RECESS DEPTH0.190 INCHES NOMINAL IN
FEATURES PROVIDEDMAGNETIZED
MATERIAL THICKNESS0.090 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.3906 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 530741?
530741 is a WASHER,RECESSED.
What is the NSN for 530741?
530741 is cataloged in the U.S. Government catalog under NSN 5310-01-023-6490. 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.