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PartsTable / COMPONENT / 91A2106
91A2106 ✓ 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,SLOTTED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.288 INCHES NOMINAL IN, outside_diameter: 0.618 INCHES NOMINAL IN, style_designator: SLOTTED, surface_treatment: CADMIUM AND CHROMATE OVERALL, material_thickness: 0.063 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-423-2531, 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
91A2106
NSN: 5310-00-423-2531
FSC: 5310
CAGE: 23040 — FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.288 INCHES NOMINAL IN
outside_diameter0.618 INCHES NOMINAL IN
style_designatorSLOTTED
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.063 INCHES NOMINAL IN
NSN5310-00-423-2531
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91A2106 · 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: STEEL OVERALL
•
STYLE DESIGNATOR: SLOTTED
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
HOLE DIAMETER: 0.288 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.063 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.618 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
STYLE DESIGNATORSLOTTED
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
HOLE DIAMETER0.288 INCHES NOMINAL IN
MATERIAL THICKNESS0.063 INCHES NOMINAL IN
OUTSIDE DIAMETER0.618 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
CH637Interchangeable
interchangeable cross-reference
interchangeable
63735Interchangeable
interchangeable cross-reference
interchangeable
4026101Interchangeable
interchangeable cross-reference
interchangeable
R5117Interchangeable
interchangeable cross-reference
interchangeable
XR5117NInterchangeable
interchangeable cross-reference
interchangeable
R4179FInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91A2106?
91A2106 is a WASHER,SLOTTED.
What parts can replace 91A2106?
There are 11 known substitutes for 91A2106: CH637, 63735, 4026101 and 8 more. Substitute compatibility should be verified for your specific system.
Is 91A2106 still available?
91A2106 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