PartsTable
Technical Data Sheet
Download PDF

MS9582-11 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS9582-11: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 OVERALL, hole_diameter: 0.320 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN, heat_treatment: STRESS RELIEVED, surface_finish: 32.0 MICROINCHES TOP, outside_diameter: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN, style_designator: 270 DEGREE LOCKING KEY. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-343-4226, 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
MS9582-11
NSN: 5310-01-343-4226
FSC: 5310 — Nuts and Washers
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL COMP 321 OVERALL
hole_diameter0.320 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
heat_treatmentSTRESS RELIEVED
surface_finish32.0 MICROINCHES TOP
outside_diameter0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
style_designator270 DEGREE LOCKING KEY
material_thickness0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
external_prebent_key_angle15.0 DEGREES NOMINAL
external_prebent_key_width0.140 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
external_tapered_key_width0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
angle_between_external_keys58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM
external_prebent_key_length0.050 INCHES NOMINAL IN
NSN5310-01-343-4226
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS9582-11 · 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 FINISH: 32.0 MICROINCHES TOP
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY LENGTH: 0.050 INCHES NOMINAL IN
•
HEAT TREATMENT: STRESS RELIEVED
•
STYLE DESIGNATOR: 270 DEGREE LOCKING KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
•
EXTERNAL TAPERED KEY WIDTH: 0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES TOP
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY LENGTH0.050 INCHES NOMINAL IN
HEAT TREATMENTSTRESS RELIEVED
STYLE DESIGNATOR270 DEGREE LOCKING KEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
EXTERNAL TAPERED KEY WIDTH0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY ANGLE15.0 DEGREES NOMINAL
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
Ready to buy MS9582-11?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MS9582-11?
MS9582-11 is a WASHER,KEY.
What is the NSN for MS9582-11?
MS9582-11 is cataloged in the U.S. Government catalog under NSN 5310-01-343-4226. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MS9582-11

✓ 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.