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Technical Data Sheet
PartsTable / COMPONENT / 664759
664759 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, shank_length: 0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN, overall_length: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, shank_diameter: 0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN, first_end_style: CHAMFERED, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM 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 5315-00-153-1047, 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
664759
NSN: 5315-00-153-1047
FSC: 5315
CAGE: 21128 — JDMC ENTERPRISES DBA HIGH SPEED MACHINE PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
shank_length0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
overall_length0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
shank_diameter0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
first_end_styleCHAMFERED
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSHOULDER
shoulder_diameter0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
first_end_locationBOTH ENDS
peripheral_diameter1.492 INCHES MINIMUM AND 1.532 INCHES MAXIMUM IN
second_shank_length0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
center_hole_diameter1.228 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
NSN5315-00-153-1047
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 664759 · 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
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: SHOULDER
•
SECOND SHANK DIAMETER: 0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
•
FIRST END LOCATION: BOTH ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSHOULDER
SECOND SHANK DIAMETER0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
FIRST END LOCATIONBOTH ENDS
OVERALL LENGTH0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SHOULDER DIAMETER0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
FIRST END STYLECHAMFERED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
25K40158Interchangeable
interchangeable cross-reference
interchangeable
PRP902-23Interchangeable
interchangeable cross-reference
interchangeable
2-218 N304-75Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 664759?
664759 is a PACKING,PREFORMED.
What parts can replace 664759?
There are 3 known substitutes for 664759: 25K40158, PRP902-23, 2-218 N304-75. Substitute compatibility should be verified for your specific system.
What is the NSN for 664759?
664759 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-153-1047. 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