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661285-2 — WASHER,SLOTTED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

661285-2: WASHER,SLOTTED.

The WASHER,SLOTTED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL, hole_diameter: 0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN, heat_treatment: AS FABRICATED, outside_diameter: 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN, style_designator: SLOTTED, material_thickness: 0.002 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-913-2689, 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
661285-2
NSN: 5310-00-913-2689
FSC: 5310 — Nuts and Washers
CAGE: 99193 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - PHOENIX (USA)
SPECIFICATIONS
materialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL
hole_diameter0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
heat_treatmentAS FABRICATED
outside_diameter0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
style_designatorSLOTTED
material_thickness0.002 INCHES NOMINAL IN
material_document_and_classificationMIL-S-5059 MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5310-00-913-2689
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 661285-2 · 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
•
HEAT TREATMENT: AS FABRICATED
•
STYLE DESIGNATOR: SLOTTED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.002 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL
•
HOLE DIAMETER: 0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAT TREATMENTAS FABRICATED
STYLE DESIGNATORSLOTTED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
MATERIAL THICKNESS0.002 INCHES NOMINAL IN
MATERIALSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.215 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 661285-2?
661285-2 is a WASHER,SLOTTED.
What is the NSN for 661285-2?
661285-2 is cataloged in the U.S. Government catalog under NSN 5310-00-913-2689. 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.