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5EX159 ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1050 OVERALL, hole_diameter: 0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN, hardness_rating: 44.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM, outside_diameter: 1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN, style_designator: FLAT EXTERNAL TEETH, material_thickness: 0.045 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 5310-01-159-2797, 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
5EX159
NSN: 5310-01-159-2797
FSC: 5310
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OVERALL
hole_diameter0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
hardness_rating44.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
outside_diameter1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
style_designatorFLAT EXTERNAL TEETH
material_thickness0.045 INCHES NOMINAL IN
end_item_identificationFAMILY OF HEMTT VEHICLES (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-159-2797
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5EX159 · 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 DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 44.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
•
OUTSIDE DIAMETER: 1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1050 OVERALL
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
MATERIAL THICKNESS: 0.045 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING44.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
OUTSIDE DIAMETER1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1050 OVERALL
STYLE DESIGNATORFLAT EXTERNAL TEETH
MATERIAL THICKNESS0.045 INCHES NOMINAL IN
HOLE DIAMETER0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONFAMILY OF HEMTT VEHICLES (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
4-113-59Interchangeable
interchangeable cross-reference
interchangeable
55443Interchangeable
interchangeable cross-reference
interchangeable
3024601-1Interchangeable
interchangeable cross-reference
interchangeable
2BT58Interchangeable
interchangeable cross-reference
interchangeable
1-1167Interchangeable
interchangeable cross-reference
interchangeable
204000NInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5EX159?
5EX159 is a WASHER,LOCK.
What parts can replace 5EX159?
There are 15 known substitutes for 5EX159: 4-113-59, 55443, 3024601-1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5EX159?
5EX159 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-159-2797. 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