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601491 ✓ 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 SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, overall_length: 2.980 INCHES NOMINAL IN, overall_diameter: 3.250 INCHES NOMINAL IN, special_features: USED IN PARMATIC FILTER CORP. 690264 FILTER, fsc_application_data: FILTER SHAFT SEAL, end_item_identification: SEAWOLF CLASS SSN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-334-5932, 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
601491
NSN: 5315-00-334-5932
FSC: 5315
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY
overall_length2.980 INCHES NOMINAL IN
overall_diameter3.250 INCHES NOMINAL IN
special_featuresUSED IN PARMATIC FILTER CORP. 690264 FILTER
fsc_application_dataFILTER SHAFT SEAL
end_item_identificationSEAWOLF CLASS SSN
criticality_code_justificationZZZY
general_characteristics_item_description9/32 IN. DIA HOLE ONE END IN
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
NSN5315-00-334-5932
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 601491 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,4130,SPEC MIL-S-6758,4.50 IN. LG,0.498 IN. DIA IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,4130,SPEC MIL-S-6758,4.50 IN. LG,0.498 IN. DIA IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
Q62702-A273ZInterchangeable
interchangeable cross-reference
interchangeable
60149-1Interchangeable
interchangeable cross-reference
interchangeable
N141480Interchangeable
interchangeable cross-reference
interchangeable
690264 PC 2Interchangeable
interchangeable cross-reference
interchangeable
PL690264 ITEM 2Interchangeable
interchangeable cross-reference
interchangeable
204447Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 601491?
601491 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 601491?
There are 8 known substitutes for 601491: Q62702-A273Z, 60149-1, N141480 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 601491?
601491 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-334-5932. 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