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801-6758384FNSPMC-D3 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

801-6758384FNSPMC-D3: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY K-500 OVERALL, hole_diameter: 0.765 INCHES MINIMUM AND 0.797 INCHES MAXIMUM IN, outside_diameter: 1.872 INCHES MINIMUM AND 1.904 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.062 INCHES NOMINAL IN, external_straight_key_width: 2.234 INCHES MINIMUM AND 2.266 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-421-1859, 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
801-6758384FNSPMC-D3
NSN: 5310-01-421-1859
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY K-500 OVERALL
hole_diameter0.765 INCHES MINIMUM AND 0.797 INCHES MAXIMUM IN
outside_diameter1.872 INCHES MINIMUM AND 1.904 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.062 INCHES NOMINAL IN
external_key_quantity7
external_straight_key_width2.234 INCHES MINIMUM AND 2.266 INCHES MAXIMUM IN
overall_distance_including_keys3.078 INCHES MINIMUM AND 3.110 INCHES MAXIMUM IN
material_document_and_classificationQQ-N-281, CLA FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-421-1859
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 801-6758384FNSPMC-D3 · 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
•
OVERALL DISTANCE INCLUDING KEYS: 3.078 INCHES MINIMUM AND 3.110 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281, CLA FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.872 INCHES MINIMUM AND 1.904 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.062 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 2.234 INCHES MINIMUM AND 2.266 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 7
TECHNICAL CHARACTERISTICS
OVERALL DISTANCE INCLUDING KEYS3.078 INCHES MINIMUM AND 3.110 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281, CLA FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.872 INCHES MINIMUM AND 1.904 INCHES MAXIMUM IN
MATERIAL THICKNESS0.062 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH2.234 INCHES MINIMUM AND 2.266 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY7
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIALNICKEL ALLOY K-500 OVERALL
HOLE DIAMETER0.765 INCHES MINIMUM AND 0.797 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 801-6758384FNSPMC-D3?
801-6758384FNSPMC-D3 is a WASHER,KEY.
What is the NSN for 801-6758384FNSPMC-D3?
801-6758384FNSPMC-D3 is cataloged in the U.S. Government catalog under NSN 5310-01-421-1859. 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.