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10-161390-2 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10-161390-2: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.880 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN, heat_treatment: AS FABRICATED, outside_diameter: 0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL, material_thickness: 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-446-2879, 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
10-161390-2
NSN: 5310-00-446-2879
FSC: 5310 — Nuts and Washers
CAGE: 59501 — UNISON INDUSTRIES LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.880 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
heat_treatmentAS FABRICATED
outside_diameter0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
material_thickness0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
external_key_quantity3
external_prebent_key_width0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
external_prebent_key_length0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
material_document_and_classificationAMS5042 OR AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationAMS2400-2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-446-2879
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10-161390-2 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS2400-2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
EXTERNAL PREBENT KEY LENGTH: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
•
HEAT TREATMENT: AS FABRICATED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5042 OR AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 3
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS2400-2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
EXTERNAL PREBENT KEY LENGTH0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
HEAT TREATMENTAS FABRICATED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5042 OR AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY3
SURFACE TREATMENTCADMIUM OVERALL
EXTERNAL PREBENT KEY WIDTH0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
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 10-161390-2?
10-161390-2 is a WASHER,KEY.
What is the NSN for 10-161390-2?
10-161390-2 is cataloged in the U.S. Government catalog under NSN 5310-00-446-2879. 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.