PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

678300Nut,plain,castellated,hexagon

General Motors Corp · NSN 5310-00-010-3050 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-010-3050 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-010-3050. Primary manufacturer part number: 678300.
Features
  • Nut,plain,castellated,hexagon — FSC 5310
  • Nut Style: CASTELLATED, HEXAGON
  • Nominal Thread Size: 0.750 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Thread Class: 2B
  • Material: STEEL OVERALL
  • Width Across Flats: 1.063 INCHES NOMINAL IN
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-010-3050, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-010-3050
Primary Part Number678300
Item NameNut,plain,castellated,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusACTIVE
Nut StyleCASTELLATED, HEXAGON
Nominal Thread Size0.750 INCHES IN
Thread DirectionRIGHT-HAND
Thread Class2B
MaterialSTEEL OVERALL
Width Across Flats1.063 INCHES NOMINAL IN
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nut Height0.813 INCHES NOMINAL IN
Thread Quantity Per Inch16
Thread SeriesUNF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5305-00-167-2328 INTERCHANGEABLE
Screw,tapping
4730-00-801-1070 INTERCHANGEABLE
Coupling,clamp,pipe
6250-00-884-2103 INTERCHANGEABLE
Starter,fluorescent Lamp
3020-01-228-9298P207 INTERCHANGEABLE
Gear,bevel
Circor Naval Solutions Llc Dba Warren Pumps
6750-01-427-1315 INTERCHANGEABLE
Film,photographic
Cross-Reference Index
Part NumberManufacturer
678300 PRIMARY General Motors Corp (USA)
P207 PRIMARY Bae Systems Land & Armaments L.p. (USA)
N13311B Diamond Reo Truck Co (USA)
142573 Brockway Motor Trucks Div of Mack Trucks Inc (USA)
77D1 Diamond Reo Truck Co (USA)
4T1266 Athey Products Corp (USA)
FFB571TYPEA Federal Specifications Promulgated by General Services Administration Washington DC (USA)
P207 Fmc Corp (USA)
S9319 Weaver Div of Dura Corp (USA)
617D Service Products Corp (USA)
7326160 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
15135F Diamond Reo Truck Co (USA)
Related Parts
5305-00-167-2328INTERCHANGEABLE
SCREW,TAPPING
4730-00-801-1070INTERCHANGEABLE
COUPLING,CLAMP,PIPE
6250-00-884-2103INTERCHANGEABLE
STARTER,FLUORESCENT LAMP
3020-01-228-9298INTERCHANGEABLE
GEAR,BEVEL
P207
6750-01-427-1315INTERCHANGEABLE
FILM,PHOTOGRAPHIC

Frequently Asked Questions

What is NSN 5310-00-010-3050?

NSN 5310-00-010-3050 is a Nut,plain,castellated,hexagon, manufactured by General Motors Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-010-3050?

NSN 5310-00-010-3050 has 12 cross-referenced part numbers: 678300 (General Motors Corp), P207 (Bae Systems Land & Armaments L.p.), N13311B (Diamond Reo Truck Co), 142573 (Brockway Motor Trucks Div of Mack Trucks Inc), 77D1 (Diamond Reo Truck Co) and 7 more.

What NSN replaces 5310-00-010-3050?

There are 5 known substitutes for 5310-00-010-3050: 5305-00-167-2328, 4730-00-801-1070, 6250-00-884-2103 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 678300?

Key specifications for 678300: Nut Style: CASTELLATED, HEXAGON; Nominal Thread Size: 0.750 INCHES IN; Thread Direction: RIGHT-HAND; Thread Class: 2B. 10 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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