PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

218488Nut,plain,slotted,hexagon

General Motors Corp · NSN 5310-00-021-8488 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-021-8488 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-021-8488. Primary manufacturer part number: 218488.
Features
  • Nut,plain,slotted,hexagon — FSC 5310
  • Nominal Thread Size: 0.625 INCHES IN
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Thread Quantity Per Inch: 11
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Width Across Flats: 1.0310 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Material Document and Classification: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-00-021-8488, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-021-8488
Primary Part Number218488
Item NameNut,plain,slotted,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusACTIVE
Nominal Thread Size0.625 INCHES IN
Bearing Surface TypeCHAMFERED OR WASHER FACED
Thread Quantity Per Inch11
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Width Across Flats1.0310 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Material Document and ClassificationQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thread Class2B
Nut StyleSLOTTED, HEXAGON
Thread DirectionRIGHT-HAND
Nut Height0.587 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-833-9315 INTERCHANGEABLE
Elbow,pipe to Tube
2530-01-504-0603A14401123 INTERCHANGEABLE
Arm,control,vehicular Suspension
Meritor Heavy Vehicle Systems, Llc
Cross-Reference Index
Part NumberManufacturer
218488 General Motors Corp (USA)
218488 General Motors Llc Dba General Motors Llc (USA)
Related Parts
4730-00-833-9315INTERCHANGEABLE
ELBOW,PIPE TO TUBE
2530-01-504-0603INTERCHANGEABLE
ARM,CONTROL,VEHICULAR SUSPENSION
A14401123

Frequently Asked Questions

What is NSN 5310-00-021-8488?

NSN 5310-00-021-8488 is a Nut,plain,slotted,hexagon, manufactured by General Motors Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-021-8488?

NSN 5310-00-021-8488 has 2 cross-referenced part numbers: 218488 (General Motors Corp), 218488 (General Motors Llc Dba General Motors Llc).

What NSN replaces 5310-00-021-8488?

There are 2 known substitutes for 5310-00-021-8488: 4730-00-833-9315, 2530-01-504-0603. Verify interchangeability with system specifications before substitution.

What are the specifications of 218488?

Key specifications for 218488: Nominal Thread Size: 0.625 INCHES IN; Bearing Surface Type: CHAMFERED OR WASHER FACED; Thread Quantity Per Inch: 11; Thread Series: UNIFIED NATIONAL COARSE (UNC). 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com