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6FE59 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6FE59: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 17.0 MILLIMETERS NOMINAL MM, outside_diameter: 26.0 MILLIMETERS NOMINAL MM, style_designator: FLAT EXTERNAL TEETH, material_thickness: 1.2 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM, end_item_identification: MRAP - UNIQUE NSN - USED ON 2 MRAP VARIANTS; MRAP BUFFALO MK2A2. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-561-2213, 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
6FE59
NSN: 5310-01-561-2213
FSC: 5310 — Nuts and Washers
CAGE: 25795 — W.W. GRAINGER, INC. DIV GOVERNMENT SALES DIVISION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter17.0 MILLIMETERS NOMINAL MM
outside_diameter26.0 MILLIMETERS NOMINAL MM
style_designatorFLAT EXTERNAL TEETH
material_thickness1.2 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM
end_item_identificationMRAP - UNIQUE NSN - USED ON 2 MRAP VARIANTS; MRAP BUFFALO MK2A2
part_name_assigned_by_controlling_agencyWASHER,EXTERNAL TEETH
NSN5310-01-561-2213
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6FE59 · 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: FLAT EXTERNAL TEETH
•
OUTSIDE DIAMETER: 26.0 MILLIMETERS NOMINAL MM
•
MATERIAL THICKNESS: 1.2 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE DIAMETER: 17.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT EXTERNAL TEETH
OUTSIDE DIAMETER26.0 MILLIMETERS NOMINAL MM
MATERIAL THICKNESS1.2 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,EXTERNAL TEETH
END ITEM IDENTIFICATIONMRAP - UNIQUE NSN - USED ON 2 MRAP VARIANTS; MRAP BUFFALO MK2A2
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER17.0 MILLIMETERS NOMINAL MM
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6FE59?
6FE59 is a WASHER,LOCK.
What is the NSN for 6FE59?
6FE59 is cataloged in the U.S. Government catalog under NSN 5310-01-561-2213. 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.