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PartsTable / COMPONENT / 2165A
2165A ✓ 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 OVERALL, thickness: 0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN, key_height: 0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN, circle_diameter: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, hardness_rating: 10.0 ROCKWELL C MINIMUM OVERALL, style_designator: ROUND BOTTOM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-010-3906, 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
2165A
NSN: 5315-00-010-3906
FSC: 5315
CAGE: 72260 — CORBITT CO INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
key_height0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
circle_diameter0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
hardness_rating10.0 ROCKWELL C MINIMUM OVERALL
style_designatorROUND BOTTOM
starting_edge_shapeSTRAIGHT
key_size_designationWOODRUFF 8
material_document_and_classificationQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-010-3906
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2165A · 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 SIZE DESIGNATION: WOODRUFF 8
•
STYLE DESIGNATOR: ROUND BOTTOM
•
CIRCLE DIAMETER: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
HARDNESS RATING: 10.0 ROCKWELL C MINIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
KEY SIZE DESIGNATIONWOODRUFF 8
STYLE DESIGNATORROUND BOTTOM
CIRCLE DIAMETER0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
KEY HEIGHT0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
HARDNESS RATING10.0 ROCKWELL C MINIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STARTING EDGE SHAPESTRAIGHT
THICKNESS0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
106751Interchangeable
interchangeable cross-reference
interchangeable
5195085Interchangeable
interchangeable cross-reference
interchangeable
12910Interchangeable
interchangeable cross-reference
interchangeable
8A91001Interchangeable
interchangeable cross-reference
interchangeable
30023Interchangeable
interchangeable cross-reference
interchangeable
A848X77Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2165A?
2165A is a KEY,WOODRUFF.
What parts can replace 2165A?
There are 22 known substitutes for 2165A: 106751, 5195085, 12910 and 19 more. Substitute compatibility should be verified for your specific system.
Is 2165A still available?
2165A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026