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A14143 ✓ 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 OVERALL, hole_diameter: 1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN, outside_diameter: 2.109 INCHES MINIMUM AND 2.141 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.078 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN, internal_straight_key_width: 0.172 INCHES MINIMUM AND 0.203 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 5310-00-700-1422, 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
A14143
NSN: 5310-00-700-1422
FSC: 5310
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN
outside_diameter2.109 INCHES MINIMUM AND 2.141 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.078 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
distance_from_centerline_to_top_of_internal_key0.453 INCHES MINIMUM AND 0.484 INCHES MAXIMUM IN
NSN5310-00-700-1422
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A14143 · 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: 0.078 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
•
HOLE DIAMETER: 1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN
•
INTERNAL STRAIGHT KEY WIDTH: 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 2.109 INCHES MINIMUM AND 2.141 INCHES MAXIMUM IN
•
INTERNAL KEY QUANTITY: 1
•
STYLE DESIGNATOR: KEY
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.453 INCHES MINIMUM AND 0.484 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.078 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
HOLE DIAMETER1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN
INTERNAL STRAIGHT KEY WIDTH0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.109 INCHES MINIMUM AND 2.141 INCHES MAXIMUM IN
INTERNAL KEY QUANTITY1
STYLE DESIGNATORKEY
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.453 INCHES MINIMUM AND 0.484 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
3935Interchangeable
interchangeable cross-reference
interchangeable
350424Interchangeable
interchangeable cross-reference
interchangeable
14 1-4 3Interchangeable
interchangeable cross-reference
interchangeable
2040231Interchangeable
interchangeable cross-reference
interchangeable
114-4143Interchangeable
interchangeable cross-reference
interchangeable
135764Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A14143?
A14143 is a WASHER,KEY.
What parts can replace A14143?
There are 10 known substitutes for A14143: 3935, 350424, 14 1-4 3 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A14143?
A14143 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-700-1422. 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