PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS1831A4C28Standoff,threaded,spacing

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5340-01-218-4373 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-218-4373 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-218-4373. Primary manufacturer part number: NAS1831A4C28.
Features
  • Standoff,threaded,spacing — FSC 5340
  • Cross-Sectional Shape: HEXAGON
  • Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS
  • Specification/standard Data: 80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Width Across Flats: 0.246 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN
  • Length: 1.745 INCHES MINIMUM AND 1.755 INCHES MAXIMUM IN
  • 10 verified cross-references
  • Primary manufacturer: National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-218-4373, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-218-4373
Primary Part NumberNAS1831A4C28
Item NameStandoff,threaded,spacing
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Cross-Sectional ShapeHEXAGON
Style DesignatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
Specification/standard Data80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Width Across Flats0.246 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN
Length1.745 INCHES MINIMUM AND 1.755 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5340-00-766-9057TA1718SS03T SUCCESSOR
Clamp,loop
Ta Aerospace Co Div Ta Aerospace
5340-01-067-718912H4-06-X40C SUCCESSOR
Standoff,threaded,spacing
Positronic Industries Inc Div Amphenol Military Aerospace Operations
4820-00-036-1750005-101-0012 INTERCHANGEABLE
Disk,valve
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
5120-00-089-0485 INTERCHANGEABLE
Extractor Set,screw
3110-00-155-672243309 INTERCHANGEABLE
Bearing,ball,annular
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
6240-00-155-8707 INTERCHANGEABLE
Lamp,incandescent
5905-00-158-4615L50J2K5 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
3010-00-293-4599 INTERCHANGEABLE
Insert,flexible Coupling
4820-00-360-40661819 INTERCHANGEABLE
Seat,valve
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
2825-00-388-6902D15-308BPC214 INTERCHANGEABLE
Lever,overspeed Tri
Northrop Grumman Systems Corporation Div Marine Systems
Cross-Reference Index
Part NumberManufacturer
HW-T0024-003 Raytheon E-Systems, Inc (USA)
8350 Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron (USA)
8172-A-0632-10 New Haven Mfg Corp Amatom Electronic Hardware Div (USA)
NAS1831 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
12922216 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
NAS1831A4C28 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
8172-A-0632-10 Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA)
8350 Dialight Corporation (USA)
1819 Keystone Electronics Corp (USA)
411750 PRIMARY Avtron Aerospace Inc (USA)
Related Parts
5340-00-766-9057SUCCESSOR
CLAMP,LOOP
TA1718SS03T
5340-01-067-7189SUCCESSOR
STANDOFF,THREADED,SPACING
12H4-06-X40C
4820-00-036-1750INTERCHANGEABLE
DISK,VALVE
005-101-0012
5120-00-089-0485INTERCHANGEABLE
EXTRACTOR SET,SCREW
3110-00-155-6722INTERCHANGEABLE
BEARING,BALL,ANNULAR
43309
6240-00-155-8707INTERCHANGEABLE
LAMP,INCANDESCENT
5905-00-158-4615INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
L50J2K5
3010-00-293-4599INTERCHANGEABLE
INSERT,FLEXIBLE COUPLING
4820-00-360-4066INTERCHANGEABLE
SEAT,VALVE
1819
2825-00-388-6902INTERCHANGEABLE
LEVER,OVERSPEED TRI
D15-308BPC214
4510-00-402-5468INTERCHANGEABLE
VALVE,SHOWER AND TUB
8350
5360-00-536-7305INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
116341819356

Frequently Asked Questions

What is NSN 5340-01-218-4373?

NSN 5340-01-218-4373 is a Standoff,threaded,spacing, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-01-218-4373?

NSN 5340-01-218-4373 has 10 cross-referenced part numbers: HW-T0024-003 (Raytheon E-Systems, Inc), 8350 (Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron), 8172-A-0632-10 (New Haven Mfg Corp Amatom Electronic Hardware Div), NAS1831 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 12922216 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate) and 5 more.

What NSN replaces 5340-01-218-4373?

There are 12 known substitutes for 5340-01-218-4373: 5340-00-766-9057, 5340-01-067-7189, 4820-00-036-1750 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS1831A4C28?

Key specifications for NAS1831A4C28: Cross-Sectional Shape: HEXAGON; Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS; Specification/standard Data: 80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Width Across Flats: 0.246 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-01-218-4373 still in active supply?

NSN 5340-01-218-4373 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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