PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS1831A6D12Standoff,threaded,spacing

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5340-00-408-5955 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-408-5955 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-408-5955. Primary manufacturer part number: NAS1831A6D12.
Features
  • Standoff,threaded,spacing — FSC 5340
  • Specification/standard Data: 80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS
  • Width Across Flats: 0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN
  • Length: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
  • Cross-Sectional Shape: HEXAGON
  • 9 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 5340-00-408-5955, 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 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-408-5955
Primary Part NumberNAS1831A6D12
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
Specification/standard Data80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
Width Across Flats0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN
Length0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
Cross-Sectional ShapeHEXAGON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 2
No Item Name Available
5340-01-067-718912H4-06-X40C SUCCESSOR
Standoff,threaded,spacing
Positronic Industries Inc Div Amphenol Military Aerospace Operations
Cross-Reference Index
Part NumberManufacturer
210-1004P14 Howard Clock Products Inc (USA)
8576A0832-1B Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA)
8576-A-0832-1 New Haven Mfg Corp Amatom Electronic Hardware Div (USA)
2515250-12 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
8576-A-0832-1 Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA)
NAS1831A6D12 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NAS1831 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
8576-A-0832 PRIMARY Emhart Industries Amatom Electronics Hardware Div (USA)
8576A0832-1B New Haven Mfg Corp Amatom Electronic Hardware Div (USA)
Related Parts
5340-01-318-6902SUCCESSOR
NO ITEM NAME AVAILABLE
5340-01-067-7189SUCCESSOR
STANDOFF,THREADED,SPACING
12H4-06-X40C

Frequently Asked Questions

What is NSN 5340-00-408-5955?

NSN 5340-00-408-5955 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 5340-00-408-5955?

NSN 5340-00-408-5955 has 9 cross-referenced part numbers: 210-1004P14 (Howard Clock Products Inc), 8576A0832-1B (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware), 8576-A-0832-1 (New Haven Mfg Corp Amatom Electronic Hardware Div), 2515250-12 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 8576-A-0832-1 (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware) and 4 more.

What NSN replaces 5340-00-408-5955?

There are 2 known substitutes for 5340-00-408-5955: 5340-01-318-6902, 5340-01-067-7189. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS1831A6D12?

Key specifications for NAS1831A6D12: Specification/standard Data: 80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS; Width Across Flats: 0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN; Length: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-408-5955 still in active supply?

NSN 5340-00-408-5955 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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