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56021-1040 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

56021-1040: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include hole_diameter: 0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN, shoulder_height: 0.040 INCHES NOMINAL IN, style_designator: SHOULDERED, shoulder_diameter: 0.800 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.050 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-817-9307, 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
56021-1040
NSN: 5310-00-817-9307
FSC: 5310 — Nuts and Washers
CAGE: 3CPE0 — SAFRAN POWER USA LLC (USA)
SPECIFICATIONS
hole_diameter0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
shoulder_height0.040 INCHES NOMINAL IN
style_designatorSHOULDERED
shoulder_diameter0.800 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.050 INCHES NOMINAL IN
material_document_and_classificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-00-817-9307
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 56021-1040 · 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
•
SHOULDER HEIGHT: 0.040 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.050 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.800 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
HOLE DIAMETER: 0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.040 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.050 INCHES NOMINAL IN
SHOULDER DIAMETER0.800 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
HOLE DIAMETER0.470 INCHES MINIMUM AND 0.475 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

No substitute or cross-reference records for this part.

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 56021-1040?
56021-1040 is a WASHER,SHOULDERED.
What is the NSN for 56021-1040?
56021-1040 is cataloged in the U.S. Government catalog under NSN 5310-00-817-9307. 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.