PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

126-251Spacer,sleeve

Ametek, Inc. Dba Aerospace Gst Div Aerospace · NSN 5365-01-421-2923 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-421-2923 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-421-2923. Primary manufacturer part number: 126-251.
Features
  • Spacer,sleeve — FSC 5365
  • Material Document and Classification: ASTM-A-269 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Material: STEEL COMP 304 OVERALL
  • Corner Shape: SQUARE ALL CORNERS
  • Body Inside Diameter: 0.1200 INCHES NOMINAL IN
  • Body Outside Diameter: 0.2500 INCHES NOMINAL IN
  • 1 verified cross-reference
Applications
  • Applications requiring Steel Comp 304 Overall construction
General Description

The Spacer,sleeve, cataloged under National Stock Number 5365-01-421-2923, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ametek, Inc. Dba Aerospace Gst Div Aerospace. Government technical data includes 6 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-01-421-2923
Primary Part Number126-251
Item NameSpacer,sleeve
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerAmetek, Inc. Dba Aerospace Gst Div Aerospace
StatusACTIVE
Material Document and ClassificationASTM-A-269 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
MaterialSTEEL COMP 304 OVERALL
Corner ShapeSQUARE ALL CORNERS
Body Inside Diameter0.1200 INCHES NOMINAL IN
Body Outside Diameter0.2500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1680-00-707-159912625-1 INTERCHANGEABLE
Nut,ratio Chamger
Triumph Controls, Llc Dba Triumph Controls, Llc
5342-01-189-355936409 INTERCHANGEABLE
Bracket
Setra Systems, Inc. Dba Gems Sensors
6145-01-547-1821AA-7016 INTERCHANGEABLE
Cable,radio Frequency
Times Microwave Systems, Inc Dba Times Microwave Systems Inc Div Times Microwave Systems
Cross-Reference Index
Part NumberManufacturer
126-251 PRIMARY Ametek, Inc. Dba Aerospace Gst Div Aerospace (USA)
Related Parts
1680-00-707-1599INTERCHANGEABLE
NUT,RATIO CHAMGER
12625-1
5342-01-189-3559INTERCHANGEABLE
BRACKET
36409
6145-01-547-1821INTERCHANGEABLE
CABLE,RADIO FREQUENCY
AA-7016

Frequently Asked Questions

What is NSN 5365-01-421-2923?

NSN 5365-01-421-2923 is a Spacer,sleeve, manufactured by Ametek, Inc. Dba Aerospace Gst Div Aerospace, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-421-2923?

NSN 5365-01-421-2923 has 1 cross-referenced part number: 126-251 (Ametek, Inc. Dba Aerospace Gst Div Aerospace).

What NSN replaces 5365-01-421-2923?

There are 3 known substitutes for 5365-01-421-2923: 1680-00-707-1599, 5342-01-189-3559, 6145-01-547-1821. Verify interchangeability with system specifications before substitution.

What are the specifications of 126-251?

Key specifications for 126-251: Material Document and Classification: ASTM-A-269 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Material: STEEL COMP 304 OVERALL; Corner Shape: SQUARE ALL CORNERS. 7 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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