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Technical Data Sheet
PartsTable / COMPONENT / 243-7670411 ITEM NO. 16
243-7670411 ITEM NO. 16 ✓ 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 243-7670411 ITEM NO. 16 is a the manufacturer industrial component. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-150-4007, 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
243-7670411 ITEM NO. 16
NSN: 5315-00-150-4007
FSC: 5315
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number243-7670411 ITEM NO. 16
NSN5315-00-150-4007
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 243-7670411 ITEM NO. 16 · 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
•
POINT TYPE: EXTENDED PRONG SQUARE CUT
•
UNDERLOOP LENGTH: 3.000 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 302 OR STEEL COMP 304 OVERALL
•
STYLE DESIGNATOR: STANDARD
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
DIAMETER: 0.275 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A493 ASSN STD ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
POINT TYPEEXTENDED PRONG SQUARE CUT
UNDERLOOP LENGTH3.000 INCHES NOMINAL IN
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OVERALL
STYLE DESIGNATORSTANDARD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
DIAMETER0.275 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A493 ASSN STD ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
15985Interchangeable
interchangeable cross-reference
interchangeable
FL-20Interchangeable
interchangeable cross-reference
interchangeable
17675-700Interchangeable
interchangeable cross-reference
interchangeable
572-8204465 ITEM 24Interchangeable
Same NIIN cross-reference
interchangeable
FFP386Interchangeable
Same NIIN cross-reference
interchangeable
MS24665-704Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 243-7670411 ITEM NO. 16?
243-7670411 ITEM NO. 16 is a 243-7670411 ITEM NO. 16.
What parts can replace 243-7670411 ITEM NO. 16?
There are 10 known substitutes for 243-7670411 ITEM NO. 16: 15985, FL-20, 17675-700 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 243-7670411 ITEM NO. 16?
243-7670411 ITEM NO. 16 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-150-4007. 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