Description
Add a specialized piece of Cold War armored vehicle machine gun mount hardware to your collection with this .50 Cal M26 Coupling, identified by Part Number 10930801 and FSN 1005-065-7546. This is a U.S. military-surplus component tied to the M26 .50 caliber machine gun mount / cupola system.
Army parts documentation identifies FSN 1005-065-7546 as a Coupling, Upper Elevating Mechanism Shaft, with P/N 10930801, listed in Figure 95, Item 8. The same manual’s usable-on code identifies this entry for the M26 Manual Cupola.
Historical Significance
The M26 .50 caliber machine gun mount was part of the armored vehicle cupola equipment family used during the Cold War period. These systems gave crews a protected or semi-protected position for operating a .50 caliber machine gun from an armored vehicle cupola.
The larger Army repair-parts manual covering this equipment includes the XM27 powered 20mm gun mount, the M26 powered .50 caliber machine gun mount, and the M26 manual .50 caliber machine gun mount. That places this coupling in a specialized group of vehicle-mounted weapons support hardware rather than ordinary shop or commercial hardware.
The Upper Elevating Mechanism Coupling
This component belongs to the upper elevating mechanism area of the M26 mount system. In practical terms, the elevating mechanism is part of the hardware that supports vertical movement and positioning of the weapon cradle or mount assembly.
Known identification details include:
- Item: .50 Cal M26 Coupling
- Catalog Nomenclature: Coupling, Upper Elevating Mechanism Shaft
- Part Number: 10930801
- Federal Stock Number: 1005-065-7546
- Modern NSN Format: 1005-00-065-7546
- NIIN: 00-065-7546
- Associated Equipment: M26 Manual Cupola / .50 Cal Machine Gun Mount
- Manual Reference: TM 9-1005-307-24P
- Illustration Reference: Figure 95, Item 8
- Item Type: U.S. military-surplus gun mount component
- Included Item: Coupling only, unless otherwise shown or stated
Public NSN data also identifies this item as an Upper Elevating Mechanism Coupling under NSN 1005-00-065-7546, with P/N 10930801.
Technical Details
Public parts data lists several useful reference details for this coupling:
- Material: Alloy steel
- Finish: Phosphate coating
- Length: approximately 1.5310 in.
- Diameter: approximately 1.0000 in.
- Spline Type: Internal spline
- Spline Style: Flat-root
- Number of Teeth: 14
- Pressure Angle: 30 degrees
- Pitch Diameter: approximately 0.7000 in.
- Base Circle Diameter: approximately 0.6062 in.
These details make it useful for collectors, restorers, and researchers who value part-numbered military hardware with traceable technical data.
Key Features
- .50 Cal M26 gun mount / cupola component
- P/N 10930801
- FSN 1005-065-7546
- Modern NSN format 1005-00-065-7546
- Listed as Coupling, Upper Elevating Mechanism Shaft
- Associated with the M26 Manual Cupola
- Classified under FSC 1005 – Guns, through 30mm
- Strong fit for armored vehicle, cupola, and .50 caliber machine gun mount displays
- Component only — no complete cupola, machine gun, mount assembly, ammunition, tools, or additional parts included unless specifically shown or noted
About This Coupling
This listing is for one .50 Cal M26 Coupling, identified as P/N 10930801 and FSN 1005-065-7546.
This listing is for the coupling component only unless otherwise stated. No complete M26 cupola, machine gun, cradle, elevating mechanism assembly, armored vehicle, ammunition, tools, manuals, or additional hardware are included unless specifically shown or noted.
This item is intended for collection, display, restoration reference, historical research, or military surplus parts study.
Ideal For
This coupling is a strong fit for:
- M26 cupola collectors
- .50 caliber machine gun mount displays
- Cold War armored vehicle parts collections
- M114 / M26 cupola reference collections
- U.S. Army surplus hardware collectors
- ordnance component displays
- museum and archival vehicle exhibits
Approx length 1.5", Approx width 1", Approx height 1", Approx weight .5lbs.
Pictures are stock images of our inventory. Unless otherwise noted, you will not be receiving the exact item shown in the pictures. The pictures are representative of the item's general condition. The item you receive might be slightly better, or worse, condition than was shown in the pictures.
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