PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

850-21Standoff,threaded,spacing

Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service · NSN 5340-00-979-6523 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-979-6523 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-979-6523. Primary manufacturer part number: 850-21.
Features
  • Standoff,threaded,spacing — FSC 5340
  • Style Designator: LEFT INTERNAL THREAD
  • Left End Chamfer Angle: 45.0 DEGREES NOMINAL
  • Length: 6.000 INCHES NOMINAL IN
  • Left End Chamfer Depth: 0.125 INCHES NOMINAL IN
  • Cross-Sectional Shape: ROUND
  • Diameter: 0.875 INCHES NOMINAL IN
  • 3 verified cross-references
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-979-6523, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-979-6523
Primary Part Number850-21
Item NameStandoff,threaded,spacing
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMarine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
StatusACTIVE
Style DesignatorLEFT INTERNAL THREAD
Left End Chamfer Angle45.0 DEGREES NOMINAL
Length6.000 INCHES NOMINAL IN
Left End Chamfer Depth0.125 INCHES NOMINAL IN
Cross-Sectional ShapeROUND
Diameter0.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 10
5360-00-664-787611-414 INTERCHANGEABLE
Spring,helical,compression
Thermo King Corporation Dba Phoenix Global Distirbution.
3110-00-690-1864SF5-6A-5 INTERCHANGEABLE
Bearing,roller,rod End
Rexnord Industries, Llc Div Aerosspace Bearing Operation
6685-00-698-6805T1050 INTERCHANGEABLE
Thermometer,self-Indicating,bime
Ametek, Inc. Div Aerospace & Defense
5315-00-738-05198502-1 INTERCHANGEABLE
Key,machine
Goodrich Aerospace Canada Ltd
3010-00-869-555343A758 INTERCHANGEABLE
Gearcase-Motor
Globe Motors, Inc. Dba Allient Dayton
2815-01-118-302168383 INTERCHANGEABLE
Piston,internal Combustion Engin
Perkins Engines Inc
4520-01-268-39556HS-RCS INTERCHANGEABLE
Cap,flue
Masco Corp American Metal Products Co Div
5998-01-334-969985021-065 INTERCHANGEABLE
Holder,electrical Card
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
5998-01-373-488685021-043 INTERCHANGEABLE
Holder,electrical Card
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
5998-01-515-513785021-029 INTERCHANGEABLE
Holder,electrical Card
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
Cross-Reference Index
Part NumberManufacturer
850-21 PRIMARY Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service (USA)
10213-25 Square D Co Electromagnetic Industries Div (USA)
10213-25 Square D Co Pinellas Plant (USA)
Related Parts
5360-00-664-7876INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
11-414
3110-00-690-1864INTERCHANGEABLE
BEARING,ROLLER,ROD END
SF5-6A-5
6685-00-698-6805INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
T1050
5315-00-738-0519INTERCHANGEABLE
KEY,MACHINE
8502-1
3010-00-869-5553INTERCHANGEABLE
GEARCASE-MOTOR
43A758
2815-01-118-3021INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
68383
4520-01-268-3955INTERCHANGEABLE
CAP,FLUE
6HS-RCS
5998-01-334-9699INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
85021-065
5998-01-373-4886INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
85021-043
5998-01-515-5137INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
85021-029

Frequently Asked Questions

What is NSN 5340-00-979-6523?

NSN 5340-00-979-6523 is a Standoff,threaded,spacing, manufactured by Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-979-6523?

NSN 5340-00-979-6523 has 3 cross-referenced part numbers: 850-21 (Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service), 10213-25 (Square D Co Electromagnetic Industries Div), 10213-25 (Square D Co Pinellas Plant).

What NSN replaces 5340-00-979-6523?

There are 10 known substitutes for 5340-00-979-6523: 5360-00-664-7876, 3110-00-690-1864, 6685-00-698-6805 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 850-21?

Key specifications for 850-21: Style Designator: LEFT INTERNAL THREAD; Left End Chamfer Angle: 45.0 DEGREES NOMINAL; Length: 6.000 INCHES NOMINAL IN; Left End Chamfer Depth: 0.125 INCHES NOMINAL IN. 6 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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