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4D0009C7 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4D0009C7: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.439 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN, hardness_rating: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM, recess_diameter: 0.539 INCHES MINIMUM AND 0.549 INCHES MAXIMUM IN, outside_diameter: 0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-341-4750, 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
4D0009C7
NSN: 5310-01-341-4750
FSC: 5310 — Nuts and Washers
CAGE: 58009 — MOELLER MANUFACTURING & SUPPLY, LLC (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.439 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
recess_diameter0.539 INCHES MINIMUM AND 0.549 INCHES MAXIMUM IN
outside_diameter0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentPASSIVATE OVERALL
material_thickness0.071 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
material_document_and_classificationAMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-341-4750
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4D0009C7 · 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
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.071 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.539 INCHES MINIMUM AND 0.549 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: NICKEL ALLOY 718 OVERALL
TECHNICAL CHARACTERISTICS
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN
MATERIAL THICKNESS0.071 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
RECESS DIAMETER0.539 INCHES MINIMUM AND 0.549 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALNICKEL ALLOY 718 OVERALL
HOLE DIAMETER0.439 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
RECESS ANGLE90.0 DEGREES NOMINAL
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 4D0009C7?
4D0009C7 is a WASHER,RECESSED.
What is the NSN for 4D0009C7?
4D0009C7 is cataloged in the U.S. Government catalog under NSN 5310-01-341-4750. 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.