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4018068 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4018068: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 OVERALL, hole_diameter: 0.192 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN, outside_diameter: 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.0330 INCHES MINIMUM AND 0.0355 INCHES MAXIMUM IN, internal_straight_key_width: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-367-8654, 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
4018068
NSN: 5310-00-367-8654
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 321 OVERALL
hole_diameter0.192 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
outside_diameter0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.0330 INCHES MINIMUM AND 0.0355 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
material_document_and_classificationAMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key0.033 INCHES NOMINAL IN
NSN5310-00-367-8654
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4018068 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.033 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.0330 INCHES MINIMUM AND 0.0355 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 321 OVERALL
•
INTERNAL KEY QUANTITY: 1
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.033 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
MATERIAL THICKNESS0.0330 INCHES MINIMUM AND 0.0355 INCHES MAXIMUM IN
MATERIALSTEEL COMP 321 OVERALL
INTERNAL KEY QUANTITY1
HOLE DIAMETER0.192 INCHES MINIMUM AND 0.198 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 4018068?
4018068 is a WASHER,KEY.
What is the NSN for 4018068?
4018068 is cataloged in the U.S. Government catalog under NSN 5310-00-367-8654. 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.