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CYRD627 ✓ 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 WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, hole_diameter: 0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, outside_diameter: 0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN, internal_straight_key_width: 0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-882-0321, 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
CYRD627
NSN: 5310-00-882-0321
FSC: 5310
CAGE: 05624 — GE AVIATION SYSTEMS LLC DBA GE AVIATION SYSTEMS LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
hole_diameter0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
outside_diameter0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
NSN5310-00-882-0321
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: CYRD627 · 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
•
MATERIAL THICKNESS: 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: KEY
•
MATERIAL: STEEL COMP 302 OVERALL
•
OUTSIDE DIAMETER: 0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
INTERNAL STRAIGHT KEY WIDTH: 0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORKEY
MATERIALSTEEL COMP 302 OVERALL
OUTSIDE DIAMETER0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
INTERNAL STRAIGHT KEY WIDTH0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
INTERNAL KEY QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
02938Interchangeable
interchangeable cross-reference
interchangeable
2938Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CYRD627?
CYRD627 is a WASHER,KEY.
What parts can replace CYRD627?
There are 2 known substitutes for CYRD627: 02938, 2938. Substitute compatibility should be verified for your specific system.
What is the NSN for CYRD627?
CYRD627 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-882-0321. 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