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PartsTable / COMPONENT / RW-166886 PIECE 1.6L1
RW-166886 PIECE 1.6L1 ✓ 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 RW-166886 PIECE 1.6L1 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-866-8637, 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
RW-166886 PIECE 1.6L1
NSN: 5310-00-866-8637
FSC: 5310
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part NumberRW-166886 PIECE 1.6L1
NSN5310-00-866-8637
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: RW-166886 PIECE 1.6L1 · 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
•
DEPARTURE FROM CITED DESIGNATOR: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
CRITICALITY CODE JUSTIFICATION: ZZZX
TECHNICAL CHARACTERISTICS (FLIS)
DEPARTURE FROM CITED DESIGNATORMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
CRITICALITY CODE JUSTIFICATIONZZZX
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
2640-825X60PC3Interchangeable
interchangeable cross-reference
interchangeable
2640-801X3 PIECE 11Q3Interchangeable
interchangeable cross-reference
interchangeable
2640-801X3PC4Q3Interchangeable
interchangeable cross-reference
interchangeable
SL-13507 PIECE 16Interchangeable
interchangeable cross-reference
interchangeable
967233-00Interchangeable
interchangeable cross-reference
interchangeable
554-7068152-F112Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RW-166886 PIECE 1.6L1?
RW-166886 PIECE 1.6L1 is a RW-166886 PIECE 1.6L1.
What parts can replace RW-166886 PIECE 1.6L1?
There are 29 known substitutes for RW-166886 PIECE 1.6L1: 2640-825X60PC3, 2640-801X3 PIECE 11Q3, 2640-801X3PC4Q3 and 26 more. Substitute compatibility should be verified for your specific system.
Is RW-166886 PIECE 1.6L1 still available?
RW-166886 PIECE 1.6L1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026