PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-457Standoff,threaded,spacing

Horizon Aerospace Llc Dba Magnetics Division · NSN 5340-00-443-3248 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-443-3248 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-443-3248. Primary manufacturer part number: 21-457.
Features
  • Standoff,threaded,spacing — FSC 5340
  • Diameter: 0.123 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
  • Length: 0.083 INCHES NOMINAL IN
  • Flange Width Across Flats: 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
  • Style Designator: FLANGED
  • Cross-Sectional Shape: ROUND
  • Corner Radius: 0.031 INCHES NOMINAL IN
  • Flange Thickness: 0.040 INCHES NOMINAL IN
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-443-3248, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Horizon Aerospace Llc Dba Magnetics Division. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5340-00-443-3248
Primary Part Number21-457
Item NameStandoff,threaded,spacing
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerHorizon Aerospace Llc Dba Magnetics Division
StatusCANCELLED
Diameter0.123 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
Length0.083 INCHES NOMINAL IN
Flange Width Across Flats0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
Style DesignatorFLANGED
Cross-Sectional ShapeROUND
Corner Radius0.031 INCHES NOMINAL IN
Flange Thickness0.040 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
2805-00-118-356721457 INTERCHANGEABLE
Support
Curtiss-Wright Controls, Inc. Div Actuation Division
2990-00-135-44351216 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
2510-00-304-94682041021 INTERCHANGEABLE
Bracket Assembly,bearing
Coach and Car Equipment Corp
6550-00-541-2980 INTERCHANGEABLE
Blood Collecting-Culture Bottle
5935-00-810-9337KPT06W12-8P INTERCHANGEABLE
Connector,plug,electrical
Itt Cannon Llc
2090-01-274-531321457 INTERCHANGEABLE
Mount Assy,electric
Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
Cross-Reference Index
Part NumberManufacturer
21-457 PRIMARY Horizon Aerospace Llc Dba Magnetics Division (USA)
Related Parts
2805-00-118-3567INTERCHANGEABLE
SUPPORT
21457
2990-00-135-4435INTERCHANGEABLE
MUFFLER,EXHAUST
1216
2510-00-304-9468INTERCHANGEABLE
BRACKET ASSEMBLY,BEARING
2041021
6550-00-541-2980INTERCHANGEABLE
BLOOD COLLECTING-CULTURE BOTTLE
5935-00-810-9337INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
KPT06W12-8P
2090-01-274-5313INTERCHANGEABLE
MOUNT ASSY,ELECTRIC
21457

Frequently Asked Questions

What is NSN 5340-00-443-3248?

NSN 5340-00-443-3248 is a Standoff,threaded,spacing, manufactured by Horizon Aerospace Llc Dba Magnetics Division, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-443-3248?

NSN 5340-00-443-3248 has 1 cross-referenced part number: 21-457 (Horizon Aerospace Llc Dba Magnetics Division).

What NSN replaces 5340-00-443-3248?

There are 6 known substitutes for 5340-00-443-3248: 2805-00-118-3567, 2990-00-135-4435, 2510-00-304-9468 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-457?

Key specifications for 21-457: Diameter: 0.123 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Length: 0.083 INCHES NOMINAL IN; Flange Width Across Flats: 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN; Style Designator: FLANGED. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-443-3248 still in active supply?

NSN 5340-00-443-3248 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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