PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1255Stay Assembly

Marathonnorco Aerospace, Inc. · NSN 1440-00-322-9792 · FSC 1440 · No Item Name Available
Verified by PartsTable
NSN 1440-00-322-9792 — this item is cataloged by the U.S. Government under National Stock Number 1440-00-322-9792. Primary manufacturer part number: A1255.
Features
  • Stay Assembly — FSC 1440
  • General Characteristics Item Description: ROD AND TUBE,STEEL,MIL-S-77204,COMP 316,RELEASE COLLAR,ALUMINUM,QQ-A-200/12B,30.880 IN. MIN,31.130 IN. MAX FULLY EXTENDED LG,26.380 IN. MIN,26.630 IN. MAX INTERMEDIATE LG,20.600 IN. RETRACTED LG IN
  • 2 verified cross-references
  • Primary manufacturer: Marathonnorco Aerospace, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Stay Assembly, cataloged under National Stock Number 1440-00-322-9792, is classified within Federal Supply Class 1440 (No Item Name Available) of the Guided Missiles group. The primary manufacturer of record is Marathonnorco Aerospace, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1440-00-322-9792
Primary Part NumberA1255
Item NameStay Assembly
FSC / FSG1440 / 14 — No Item Name Available
ManufacturerMarathonnorco Aerospace, Inc.
StatusACTIVE
General Characteristics Item DescriptionROD AND TUBE,STEEL,MIL-S-77204,COMP 316,RELEASE COLLAR,ALUMINUM,QQ-A-200/12B,30.880 IN. MIN,31.130 IN. MAX FULLY EXTENDED LG,26.380 IN. MIN,26.630 IN. MAX INTERMEDIATE LG,20.600 IN. RETRACTED LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2910-00-455-791063C41579 INTERCHANGEABLE
Filter,fluid
Libby Power Systems, Llc
Cross-Reference Index
Part NumberManufacturer
2890759-1 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
A1255 PRIMARY Marathonnorco Aerospace, Inc. (USA)
Related Parts
2910-00-455-7910INTERCHANGEABLE
FILTER,FLUID
63C41579

Frequently Asked Questions

What is NSN 1440-00-322-9792?

NSN 1440-00-322-9792 is a Stay Assembly, manufactured by Marathonnorco Aerospace, Inc., classified under FSC 1440 (No Item Name Available). Status: active.

What are the part numbers for NSN 1440-00-322-9792?

NSN 1440-00-322-9792 has 2 cross-referenced part numbers: 2890759-1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), A1255 (Marathonnorco Aerospace, Inc.).

What NSN replaces 1440-00-322-9792?

There is 1 known substitute for 1440-00-322-9792: 2910-00-455-7910. Verify interchangeability with system specifications before substitution.

What are the specifications of A1255?

Key specifications for A1255: General Characteristics Item Description: ROD AND TUBE,STEEL,MIL-S-77204,COMP 316,RELEASE COLLAR,ALUMINUM,QQ-A-200/12B,30.880 IN. MIN,31.130 IN. MAX FULLY EXTENDED LG,26.380 IN. MIN,26.630 IN. MAX INTERMEDIATE LG,20.600 IN. RETRACTED LG IN. 1 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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