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Technical Data Sheet
PartsTable / COMPONENT / 12759-00767
12759-00767 ✓ 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 OVERALL, hole_diameter: 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN, outside_diameter: 0.776 INCHES MAXIMUM IN, special_features: 7/16 INCH ZINC PLATED MEDIUM SPLIT LOCK WASHER IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-564-3330, 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
12759-00767
NSN: 5310-01-564-3330
FSC: 5310
CAGE: 0Y3H3 — FASTENAL COMPANY DBA FASTENAL CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
outside_diameter0.776 INCHES MAXIMUM IN
special_features7/16 INCH ZINC PLATED MEDIUM SPLIT LOCK WASHER IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC OVERALL
material_thickness0.109 INCHES MINIMUM IN
end_item_identificationMRAP - COUGAR
NSN5310-01-564-3330
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12759-00767 · 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
•
HOLE DIAMETER: 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.776 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
MATERIAL THICKNESS: 0.109 INCHES MINIMUM IN
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURES7/16 INCH ZINC PLATED MEDIUM SPLIT LOCK WASHER IN
END ITEM IDENTIFICATIONMRAP - COUGAR
HOLE DIAMETER0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.776 INCHES MAXIMUM IN
SURFACE TREATMENTZINC OVERALL
MATERIALSTEEL OVERALL
MATERIAL THICKNESS0.109 INCHES MINIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
46S13Interchangeable
interchangeable cross-reference
interchangeable
UDR38273Interchangeable
interchangeable cross-reference
interchangeable
38273Interchangeable
interchangeable cross-reference
interchangeable
8887-605247Interchangeable
interchangeable cross-reference
interchangeable
336-24Interchangeable
interchangeable cross-reference
interchangeable
15320Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12759-00767?
12759-00767 is a WASHER,LOCK.
What parts can replace 12759-00767?
There are 9 known substitutes for 12759-00767: 46S13, UDR38273, 38273 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12759-00767?
12759-00767 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-564-3330. 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