PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1278-HXWedge,door Dovetail

Oshkosh Defense Llc · NSN 2540-00-629-2546 · FSC 2540 · No Item Name Available
Verified by PartsTable
NSN 2540-00-629-2546 — this item is cataloged by the U.S. Government under National Stock Number 2540-00-629-2546. Primary manufacturer part number: 1278-HX.
Features
  • Wedge,door Dovetail — FSC 2540
  • Hole Arrangement Style: DOOR WEDGE
  • Casehardening Indicator: NOT CASEHARDENED
  • Material: ALUMINUM ALLOY
  • Height: 0.750 INCHES NOMINAL IN
  • Wedge Largest Width: 0.468 INCHES NOMINAL IN
  • Style Designator: STRIKER
  • First Taper Angle in Deg: 7.0
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Wedge,door Dovetail, cataloged under National Stock Number 2540-00-629-2546, is classified within Federal Supply Class 2540 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Oshkosh Defense Llc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN2540-00-629-2546
Primary Part Number1278-HX
Item NameWedge,door Dovetail
FSC / FSG2540 / 25 — No Item Name Available
ManufacturerOshkosh Defense Llc
StatusACTIVE
Hole Arrangement StyleDOOR WEDGE
Casehardening IndicatorNOT CASEHARDENED
MaterialALUMINUM ALLOY
Height0.750 INCHES NOMINAL IN
Wedge Largest Width0.468 INCHES NOMINAL IN
Style DesignatorSTRIKER
First Taper Angle in Deg7.0
Length From Wedge Center to End1.000 INCHES NOMINAL IN
Outside Edge to Bolt Hole Center Distance Along Length0.532 INCHES NOMINAL IN
Hole Centers Major Distance Along Length0.968 INCHES NOMINAL IN
Length2.000 INCHES NOMINAL IN
Hole Diameter0.328 INCHES NOMINAL IN
Width1.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
6645-00-099-6913 INTERCHANGEABLE
Timer,interval
4210-00-245-11177077 INTERCHANGEABLE
Bracket,fire Extinguisher
Tyco Fire Products Lp
5930-00-476-63012587064 INTERCHANGEABLE
Switch,pressure
Naval Ship Systems Command
4730-00-499-983716F08 INTERCHANGEABLE
Plug,pipe
Dana Off Highway Products, Llc
2805-00-516-9459DR3 INTERCHANGEABLE
Ring Set,piston
Wisconsin Motors, Llc
5975-00-578-2230 INTERCHANGEABLE
Conduit Outlet
5960-00-688-6706 INTERCHANGEABLE
Electron Tube
5960-00-772-9054 INTERCHANGEABLE
Electron Tube
5995-00-993-95017077 INTERCHANGEABLE
Cable Assembly,radio Frequency
Spencer Industries Inc
4820-01-063-5949487-00 INTERCHANGEABLE
Disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
70-7-7 Truck Cab Mfrs Inc (USA)
1278-HX PRIMARY Oshkosh Defense Llc (USA)
1278-HX Oshkosh Corp (USA)
Related Parts
6645-00-099-6913INTERCHANGEABLE
TIMER,INTERVAL
4210-00-245-1117INTERCHANGEABLE
BRACKET,FIRE EXTINGUISHER
7077
5930-00-476-6301INTERCHANGEABLE
SWITCH,PRESSURE
2587064
4730-00-499-9837INTERCHANGEABLE
PLUG,PIPE
16F08
2805-00-516-9459INTERCHANGEABLE
RING SET,PISTON
DR3
5975-00-578-2230INTERCHANGEABLE
CONDUIT OUTLET
5960-00-688-6706INTERCHANGEABLE
ELECTRON TUBE
5960-00-772-9054INTERCHANGEABLE
ELECTRON TUBE
5995-00-993-9501INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
7077
4820-01-063-5949INTERCHANGEABLE
DISK,VALVE
487-00
5120-01-107-5711INTERCHANGEABLE
PLIER,CONE AXLESTUD
6515-01-231-6752INTERCHANGEABLE
CANISTER ASSEMBLY,SUCTION,SURGIC

Frequently Asked Questions

What is NSN 2540-00-629-2546?

NSN 2540-00-629-2546 is a Wedge,door Dovetail, manufactured by Oshkosh Defense Llc, classified under FSC 2540 (No Item Name Available). Status: active.

What are the part numbers for NSN 2540-00-629-2546?

NSN 2540-00-629-2546 has 3 cross-referenced part numbers: 70-7-7 (Truck Cab Mfrs Inc), 1278-HX (Oshkosh Defense Llc), 1278-HX (Oshkosh Corp).

What NSN replaces 2540-00-629-2546?

There are 12 known substitutes for 2540-00-629-2546: 6645-00-099-6913, 4210-00-245-1117, 5930-00-476-6301 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1278-HX?

Key specifications for 1278-HX: Hole Arrangement Style: DOOR WEDGE; Casehardening Indicator: NOT CASEHARDENED; Material: ALUMINUM ALLOY; Height: 0.750 INCHES NOMINAL IN. 13 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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