PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4251-5Frame,seat,aircraft

B/e Aerospace Inc Dba Interturbine · NSN 1680-00-253-2249 · FSC 1680 · No Item Name Available
Verified by PartsTable
NSN 1680-00-253-2249 — this item is cataloged by the U.S. Government under National Stock Number 1680-00-253-2249. Primary manufacturer part number: 4251-5.
Features
  • Frame,seat,aircraft — FSC 1680
  • Height: 9.210 INCHES MINIMUM AND 19.000 INCHES MAXIMUM IN
  • 5 verified cross-references
  • Primary manufacturer: B/e Aerospace Inc Dba Interturbine
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Frame,seat,aircraft, cataloged under National Stock Number 1680-00-253-2249, is classified within Federal Supply Class 1680 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is B/e Aerospace Inc Dba Interturbine. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN1680-00-253-2249
Primary Part Number4251-5
Item NameFrame,seat,aircraft
FSC / FSG1680 / 16 — No Item Name Available
ManufacturerB/e Aerospace Inc Dba Interturbine
StatusCANCELLED
Height9.210 INCHES MINIMUM AND 19.000 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5120-00-180-0730 INTERCHANGEABLE
Screwdriver,jeweler's,swivel Kno
5950-00-921-39451830286-1 INTERCHANGEABLE
Transformer,radio Frequency
Honeywell International Inc. Dba Honeywell International
9320-01-499-4033 INTERCHANGEABLE
Rubber Strip
Cross-Reference Index
Part NumberManufacturer
641378-101 Lockheed Martin Corp (USA)
9614-3 Hardman Aircraft Inc (USA)
4251-5 Lockheed Martin Corp (USA)
4251-5 PRIMARY B/e Aerospace Inc Dba Interturbine (USA)
4251-5 Hardman Aircraft Inc (USA)
Related Parts
5120-00-180-0730INTERCHANGEABLE
SCREWDRIVER,JEWELER'S,SWIVEL KNO
5950-00-921-3945INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
1830286-1
9320-01-499-4033INTERCHANGEABLE
RUBBER STRIP

Frequently Asked Questions

What is NSN 1680-00-253-2249?

NSN 1680-00-253-2249 is a Frame,seat,aircraft, manufactured by B/e Aerospace Inc Dba Interturbine, classified under FSC 1680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 1680-00-253-2249?

NSN 1680-00-253-2249 has 5 cross-referenced part numbers: 641378-101 (Lockheed Martin Corp), 9614-3 (Hardman Aircraft Inc), 4251-5 (Lockheed Martin Corp), 4251-5 (B/e Aerospace Inc Dba Interturbine), 4251-5 (Hardman Aircraft Inc).

What NSN replaces 1680-00-253-2249?

There are 3 known substitutes for 1680-00-253-2249: 5120-00-180-0730, 5950-00-921-3945, 9320-01-499-4033. Verify interchangeability with system specifications before substitution.

What are the specifications of 4251-5?

Key specifications for 4251-5: Height: 9.210 INCHES MINIMUM AND 19.000 INCHES MAXIMUM IN; Overall Length: 19.111 INCHES NOMINAL IN. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 1680-00-253-2249 still in active supply?

NSN 1680-00-253-2249 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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