PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51768Nut,self-Locking,hexagon

Waterous Company · NSN 5310-01-028-0204 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-028-0204 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-028-0204. Primary manufacturer part number: 51768.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Bearing Surface Type: CHAMFERED
  • Nut Style: HEXAGON
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Width Across Flats: 0.625 INCHES NOMINAL IN
  • Nut Height: 0.453 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Waterous Company
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-028-0204, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Waterous Company. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-028-0204
Primary Part Number51768
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerWaterous Company
StatusACTIVE
Bearing Surface TypeCHAMFERED
Nut StyleHEXAGON
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Width Across Flats0.625 INCHES NOMINAL IN
Nut Height0.453 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5930-00-034-6598Q607A1076 INTERCHANGEABLE
Switch,sensitive
Honeywell Inc Residential Div
5310-00-205-8932SCB69322-8 INTERCHANGEABLE
Washer,flat
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2805-00-271-954428212 INTERCHANGEABLE
Valve,poppet,engine
Brinkley Technology Group Llc Dba Hercules Manufacturing
4320-00-339-239351768 INTERCHANGEABLE
Valve Head,hydraulic Motor-Pump
Parker Hannifin Corporation Div Hydraulic Systems Division
2940-00-405-7377117-4418 INTERCHANGEABLE
Filter Element,fluid
Wartsila Canada Inc
5355-00-854-664051768 INTERCHANGEABLE
Dial,scale
L3harris Technologies, Inc. Div Space and Airborne Systems
5930-01-136-953451768 INTERCHANGEABLE
Switch Assembly
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
2530-01-364-822951768-1 INTERCHANGEABLE
Boot,vehicular Components
Husco International Inc
5331-01-480-750851768 INTERCHANGEABLE
O-Ring
Ingersoll-Rand Co Material Handling Div
5310-01-545-929651768 INTERCHANGEABLE
Washer,aircraft,mat
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
51768 PRIMARY Waterous Company (USA)
Related Parts
5930-00-034-6598INTERCHANGEABLE
SWITCH,SENSITIVE
Q607A1076
5310-00-205-8932INTERCHANGEABLE
WASHER,FLAT
SCB69322-8
2805-00-271-9544INTERCHANGEABLE
VALVE,POPPET,ENGINE
28212
4320-00-339-2393INTERCHANGEABLE
VALVE HEAD,HYDRAULIC MOTOR-PUMP
51768
2940-00-405-7377INTERCHANGEABLE
FILTER ELEMENT,FLUID
117-4418
5355-00-854-6640INTERCHANGEABLE
DIAL,SCALE
51768
5930-01-136-9534INTERCHANGEABLE
SWITCH ASSEMBLY
51768
2530-01-364-8229INTERCHANGEABLE
BOOT,VEHICULAR COMPONENTS
51768-1
5331-01-480-7508INTERCHANGEABLE
O-RING
51768
5310-01-545-9296INTERCHANGEABLE
WASHER,AIRCRAFT,MAT
51768

Frequently Asked Questions

What is NSN 5310-01-028-0204?

NSN 5310-01-028-0204 is a Nut,self-Locking,hexagon, manufactured by Waterous Company, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-028-0204?

NSN 5310-01-028-0204 has 1 cross-referenced part number: 51768 (Waterous Company).

What NSN replaces 5310-01-028-0204?

There are 10 known substitutes for 5310-01-028-0204: 5930-00-034-6598, 5310-00-205-8932, 2805-00-271-9544 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51768?

Key specifications for 51768: Bearing Surface Type: CHAMFERED; Nut Style: HEXAGON; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Width Across Flats: 0.625 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.

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