PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X1719Nut,plain,hexagon

Meritor Industrial Products, Llc · NSN 5310-00-266-0387 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-266-0387 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-266-0387. Primary manufacturer part number: X1719.
Features
  • Nut,plain,hexagon — FSC 5310
  • Material: STEEL OVERALL
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Nominal Thread Size: 0.500 INCHES IN
  • Thread Quantity Per Inch: 13
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Nondefinitive Spec/std Data: B GRADE AND 3 TYPE AND 3 STYLE
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-266-0387, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Meritor Industrial Products, Llc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-266-0387
Primary Part NumberX1719
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMeritor Industrial Products, Llc
StatusACTIVE
MaterialSTEEL OVERALL
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nominal Thread Size0.500 INCHES IN
Thread Quantity Per Inch13
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Nondefinitive Spec/std DataB GRADE AND 3 TYPE AND 3 STYLE
Thread DirectionRIGHT-HAND
Nut StyleHEXAGON
Width Across Flats0.813 INCHES NOMINAL IN
Nut Height0.422 INCHES NOMINAL IN
Thread Class2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-012-3263 INTERCHANGEABLE
Nut,plain,hexagon
5940-00-725-1230 INTERCHANGEABLE
Terminal,stud
5310-00-768-0318 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-806-0955 INTERCHANGEABLE
Nut,plain,hexagon
5325-01-240-0722X-370 INTERCHANGEABLE
Ring,retaining
Electro-Mechano Inc. Dba E M Instruments Div
6680-01-339-0093123263 INTERCHANGEABLE
Switch,liquid Level
Setra Systems, Inc. Dba Gems Sensors
Cross-Reference Index
Part NumberManufacturer
X370 Meritor Heavy Vehicle Systems, Llc (USA)
212-4K Ingersoll Rand Co (USA)
241W1 Diamond Reo Truck Co (USA)
X370 Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co (USA)
X1719 PRIMARY Meritor Industrial Products, Llc (USA)
X1719 Meritor Heavy Vehicle Systems, Llc (USA)
182JA3 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
16A4C5 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
X18239 Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc (USA)
FFN836GR0UPBTYPE3STYLE3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
X370 Kaitlin Corp (USA)
P2554 Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co (USA)
16A4C5 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
182JA3 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
A4880X White Motor Corp (USA)
X370 Koehring Co Lorain Div (USA)
P2554 Koehring Co Lorain Div (USA)
2B5281 White Motor Corp (USA)
X370 PRIMARY Meritor Industrial Products, Llc (USA)
123263 Diamond Reo Truck Co (USA)
Related Parts
5310-00-012-3263INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5940-00-725-1230INTERCHANGEABLE
TERMINAL,STUD
5310-00-768-0318INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-806-0955INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5325-01-240-0722INTERCHANGEABLE
RING,RETAINING
X-370
6680-01-339-0093INTERCHANGEABLE
SWITCH,LIQUID LEVEL
123263

Frequently Asked Questions

What is NSN 5310-00-266-0387?

NSN 5310-00-266-0387 is a Nut,plain,hexagon, manufactured by Meritor Industrial Products, Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-266-0387?

NSN 5310-00-266-0387 has 23 cross-referenced part numbers: X370 (Meritor Heavy Vehicle Systems, Llc), 212-4K (Ingersoll Rand Co), 241W1 (Diamond Reo Truck Co), X370 (Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co), X1719 (Meritor Industrial Products, Llc) and 18 more.

What NSN replaces 5310-00-266-0387?

There are 6 known substitutes for 5310-00-266-0387: 5310-00-012-3263, 5940-00-725-1230, 5310-00-768-0318 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of X1719?

Key specifications for X1719: Material: STEEL OVERALL; Bearing Surface Type: CHAMFERED OR WASHER FACED; Nominal Thread Size: 0.500 INCHES IN; Thread Quantity Per Inch: 13. 11 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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