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Technical Data Sheet
PartsTable / COMPONENT / 866117
866117 ✓ 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: NICKEL ALLOY R-405 OVERALL, thickness: 0.156 INCHES NOMINAL IN, key_height: 0.240 INCHES NOMINAL IN, circle_diameter: 0.625 INCHES NOMINAL IN, style_designator: FLAT BOTTOM, starting_edge_shape: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-188-8970, 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
866117
NSN: 5315-00-188-8970
FSC: 5315
CAGE: 88818 — KEARFOTT CORPORATION DIV GUIDANCE AND NAVIGATION DIVISION (USA)
SPECIFICATIONS
materialNICKEL ALLOY R-405 OVERALL
thickness0.156 INCHES NOMINAL IN
key_height0.240 INCHES NOMINAL IN
circle_diameter0.625 INCHES NOMINAL IN
style_designatorFLAT BOTTOM
starting_edge_shapeROUND
key_size_designationWOODRUFF 6
starting_edge_radius0.010 INCHES NOMINAL IN
NSN5315-00-188-8970
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 866117 · 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
•
KEY HEIGHT: 0.240 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT BOTTOM
•
STARTING EDGE SHAPE: ROUND
•
THICKNESS: 0.156 INCHES NOMINAL IN
•
KEY SIZE DESIGNATION: WOODRUFF 6
•
STARTING EDGE RADIUS: 0.010 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY R-405 OVERALL
•
CIRCLE DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
KEY HEIGHT0.240 INCHES NOMINAL IN
STYLE DESIGNATORFLAT BOTTOM
STARTING EDGE SHAPEROUND
THICKNESS0.156 INCHES NOMINAL IN
KEY SIZE DESIGNATIONWOODRUFF 6
STARTING EDGE RADIUS0.010 INCHES NOMINAL IN
MATERIALNICKEL ALLOY R-405 OVERALL
CIRCLE DIAMETER0.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
21170Interchangeable
interchangeable cross-reference
interchangeable
OSM21170Interchangeable
interchangeable cross-reference
interchangeable
879-11-16MA9Interchangeable
interchangeable cross-reference
interchangeable
9317Interchangeable
interchangeable cross-reference
interchangeable
NP10045PC26Interchangeable
interchangeable cross-reference
interchangeable
SL6713PC41Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 866117?
866117 is a KEY,WOODRUFF.
What parts can replace 866117?
There are 7 known substitutes for 866117: 21170, OSM21170, 879-11-16MA9 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 866117?
866117 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-188-8970. 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