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Technical Data Sheet
PartsTable / COMPONENT / 531586-8
531586-8 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The KEY,WOODRUFF is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303SE OVERALL, thickness: 0.0948 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM IN, key_height: 0.203 INCHES NOMINAL IN, circle_diameter: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, style_designator: ROUND BOTTOM, surface_treatment: PASSIVATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-184-7558, 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
531586-8
NSN: 5315-00-184-7558
FSC: 5315
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE OVERALL
thickness0.0948 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM IN
key_height0.203 INCHES NOMINAL IN
circle_diameter0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
style_designatorROUND BOTTOM
surface_treatmentPASSIVATE OVERALL
starting_edge_shapeSTRAIGHT
key_size_designationWOODRUFF 2
NSN5315-00-184-7558
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 531586-8 · 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
•
STARTING EDGE SHAPE: STRAIGHT
•
THICKNESS: 0.0948 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM IN
•
CIRCLE DIAMETER: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
KEY SIZE DESIGNATION: WOODRUFF 2
•
STYLE DESIGNATOR: ROUND BOTTOM
•
MATERIAL: STEEL COMP 303SE OVERALL
•
KEY HEIGHT: 0.203 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STARTING EDGE SHAPESTRAIGHT
THICKNESS0.0948 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM IN
CIRCLE DIAMETER0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
KEY SIZE DESIGNATIONWOODRUFF 2
STYLE DESIGNATORROUND BOTTOM
MATERIALSTEEL COMP 303SE OVERALL
KEY HEIGHT0.203 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
CR2Interchangeable
interchangeable cross-reference
interchangeable
11995Interchangeable
interchangeable cross-reference
interchangeable
RR-R-330Interchangeable
interchangeable cross-reference
interchangeable
ACC72202Interchangeable
interchangeable cross-reference
interchangeable
A-A-125Interchangeable
interchangeable cross-reference
interchangeable
CR-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 531586-8?
531586-8 is a KEY,WOODRUFF.
What parts can replace 531586-8?
There are 12 known substitutes for 531586-8: CR2, 11995, RR-R-330 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 531586-8?
531586-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-184-7558. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026