PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RW-166886 PIECE 1.6L1Nut,self-Locking,hexagon

Naval Inventory Control Point Mechanicsburg · NSN 5310-00-866-8637 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-866-8637 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-866-8637. Primary manufacturer part number: RW-166886 PIECE 1.6L1.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • Criticality Code Justification: ZZZX
  • 50 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-866-8637, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-866-8637
Primary Part NumberRW-166886 PIECE 1.6L1
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusCANCELLED
Departure From Cited DesignatorMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Criticality Code JustificationZZZX
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4820-00-411-2699 INTERCHANGEABLE
Seat,valve
4320-01-192-3564967233-00 INTERCHANGEABLE
Deflector,dirt and Liquid
Curtiss-Wright Electro-Mechanical Corporation Div Epd
5310-01-269-0328516-8500418 ITEM F2 INTERCHANGEABLE
Nut,self-Locking,hexagon
Naval Sea Systems Command
5310-01-348-1730 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-375-0654 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-450-7796 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-670-4616 INTERCHANGEABLE
Nut,self-Locking,hexagon
Cross-Reference Index
Part NumberManufacturer
RW-166886 PIECE 1.6L1 Naval Inventory Control Point Mechanicsburg (USA)
807045-15L1 Naval Inventory Control Point Mechanicsburg (USA)
505-4457351 PIECE 152L1 Naval Inventory Control Point Mechanicsburg (USA)
122-5583811 ITEM 021L1 Naval Inventory Control Point Mechanicsburg (USA)
801-6404593 FIND17L1 Naval Inventory Control Point Mechanicsburg (USA)
516-6600807 ITEMF8 Naval Sea Systems Command (USA)
G5472101-0152L1 Naval Inventory Control Point Mechanicsburg (USA)
845-4775991 ITEM 28 Naval Ship Systems Command (USA)
B651-8330-F130L1 Naval Inventory Control Point Mechanicsburg (USA)
6405216 FIND 115L1 Naval Inventory Control Point Mechanicsburg (USA)
516-6600807 ITEM F110 Naval Sea Systems Command (USA)
G547-2101 PN 152 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2270-61 PIECE 19L1 Naval Inventory Control Point Mechanicsburg (USA)
G5472101-0152 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
505-4457351 PIECE 152 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
M25027/1-10C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SL-13507 PIECE 1.6L1 Naval Inventory Control Point Mechanicsburg (USA)
MS17828-10 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
SL-13507 PIECE 1.6 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
2641-744 ITEM 30 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4820-00-411-2699INTERCHANGEABLE
SEAT,VALVE
4320-01-192-3564INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
967233-00
5310-01-269-0328INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
516-8500418 ITEM F2
5310-01-348-1730INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-375-0654INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-450-7796INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-670-4616INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-866-8637?

NSN 5310-00-866-8637 is a Nut,self-Locking,hexagon, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-866-8637?

NSN 5310-00-866-8637 has 50 cross-referenced part numbers: RW-166886 PIECE 1.6L1 (Naval Inventory Control Point Mechanicsburg), 807045-15L1 (Naval Inventory Control Point Mechanicsburg), 505-4457351 PIECE 152L1 (Naval Inventory Control Point Mechanicsburg), 122-5583811 ITEM 021L1 (Naval Inventory Control Point Mechanicsburg), 801-6404593 FIND17L1 (Naval Inventory Control Point Mechanicsburg) and 45 more.

What NSN replaces 5310-00-866-8637?

There are 7 known substitutes for 5310-00-866-8637: 4820-00-411-2699, 4320-01-192-3564, 5310-01-269-0328 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RW-166886 PIECE 1.6L1?

Key specifications for RW-166886 PIECE 1.6L1: Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS; Criticality Code Justification: ZZZX. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-866-8637 still in active supply?

NSN 5310-00-866-8637 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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