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2251386 ✓ 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,SADDLE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.913 INCHES NOMINAL IN, outside_diameter: 2.011 INCHES NOMINAL IN, style_designator: SADDLE, material_thickness: 0.141 INCHES NOMINAL 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 5310-00-251-4483, 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
2251386
NSN: 5310-00-251-4483
FSC: 5310
CAGE: 50024 — COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE FM/ALCO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.913 INCHES NOMINAL IN
outside_diameter2.011 INCHES NOMINAL IN
style_designatorSADDLE
material_thickness0.141 INCHES NOMINAL IN
NSN5310-00-251-4483
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2251386 · 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
•
OUTSIDE DIAMETER: 2.011 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.141 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.913 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SADDLE
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER2.011 INCHES NOMINAL IN
MATERIAL THICKNESS0.141 INCHES NOMINAL IN
HOLE DIAMETER0.913 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSADDLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
1644Interchangeable
interchangeable cross-reference
interchangeable
9743-B-0632-37Interchangeable
interchangeable cross-reference
interchangeable
8254Interchangeable
interchangeable cross-reference
interchangeable
482241Interchangeable
interchangeable cross-reference
interchangeable
1644AInterchangeable
interchangeable cross-reference
interchangeable
405004-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2251386?
2251386 is a WASHER,SADDLE.
What parts can replace 2251386?
There are 16 known substitutes for 2251386: 1644, 9743-B-0632-37, 8254 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2251386?
2251386 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-251-4483. 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