PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

251Bumper

Atlantic India Rubber Co Inc · NSN 5340-00-266-0763 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-266-0763 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-266-0763. Primary manufacturer part number: 251.
Features
  • Bumper — FSC 5340
  • Style Designator: PAN TOP COUNTERBORED
  • Material: RUBBER SYNTHETIC
  • Outside/top Flange Diameter: 0.813 INCHES NOMINAL IN
  • First Counterbore Diameter: 0.375 INCHES NOMINAL IN
  • Color: BLACK
  • Hole Diameter: 0.219 INCHES NOMINAL IN
  • First Counterbore Depth: 0.281 INCHES NOMINAL IN
Applications
  • Applications requiring Rubber Synthetic construction
General Description

The Bumper, cataloged under National Stock Number 5340-00-266-0763, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Atlantic India Rubber Co Inc. Government technical data includes 7 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: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-266-0763
Primary Part Number251
Item NameBumper
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerAtlantic India Rubber Co Inc
StatusCANCELLED
Style DesignatorPAN TOP COUNTERBORED
MaterialRUBBER SYNTHETIC
Outside/top Flange Diameter0.813 INCHES NOMINAL IN
First Counterbore Diameter0.375 INCHES NOMINAL IN
ColorBLACK
Hole Diameter0.219 INCHES NOMINAL IN
First Counterbore Depth0.281 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
Power Supply
5340-01-188-8771CATALOG #170 FIG.# 613 SUCCESSOR
Snap Hook
Perko Inc
5950-00-103-6452 INTERCHANGEABLE
Coil,radio Frequency
5915-00-107-0253NW5616 INTERCHANGEABLE
Capacitor-Resistor
Prime Technology Llc
3830-00-163-88140101843-1 INTERCHANGEABLE
Cup
New Holland Construction
3455-00-293-0512 INTERCHANGEABLE
Cutter,milling,metal Slitting
5950-00-409-01921843 INTERCHANGEABLE
Reactor
Magnespec Inc
6625-00-424-40751843 INTERCHANGEABLE
Position and Syncro Indicator As
Scientific Atlanta Inc
6240-00-877-28111843 INTERCHANGEABLE
Lamp,incandescent
Ward Leonard Ct Llc
5935-00-906-318977C707868-2 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Lockheed Martin Corporation Div Rms
Cross-Reference Index
Part NumberManufacturer
251 Atlantic India Rubber Co Inc (USA)
184-3 Federal Div of Victoreen Instrument Co Inc (USA)
FES970-2 Genrad Inc (USA)
Related Parts
6130-01-048-4712SUCCESSOR
POWER SUPPLY
5340-01-188-8771SUCCESSOR
SNAP HOOK
CATALOG #170 FIG.# 613
5950-00-103-6452INTERCHANGEABLE
COIL,RADIO FREQUENCY
5915-00-107-0253INTERCHANGEABLE
CAPACITOR-RESISTOR
NW5616
3830-00-163-8814INTERCHANGEABLE
CUP
0101843-1
3455-00-293-0512INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
5950-00-409-0192INTERCHANGEABLE
REACTOR
1843
6625-00-424-4075INTERCHANGEABLE
POSITION AND SYNCRO INDICATOR AS
1843
6240-00-877-2811INTERCHANGEABLE
LAMP,INCANDESCENT
1843
5935-00-906-3189INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
77C707868-2
3455-01-049-1013INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
08040
5310-01-172-4068INTERCHANGEABLE
WASHER
530-506

Frequently Asked Questions

What is NSN 5340-00-266-0763?

NSN 5340-00-266-0763 is a Bumper, manufactured by Atlantic India Rubber Co Inc, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-266-0763?

NSN 5340-00-266-0763 has 3 cross-referenced part numbers: 251 (Atlantic India Rubber Co Inc), 184-3 (Federal Div of Victoreen Instrument Co Inc), FES970-2 (Genrad Inc).

What NSN replaces 5340-00-266-0763?

There are 12 known substitutes for 5340-00-266-0763: 6130-01-048-4712, 5340-01-188-8771, 5950-00-103-6452 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 251?

Key specifications for 251: Overall Height: 0.719 INCHES NOMINAL IN; Style Designator: PAN TOP COUNTERBORED; Material: RUBBER SYNTHETIC; Outside/top Flange Diameter: 0.813 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-266-0763 still in active supply?

NSN 5340-00-266-0763 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.
PartsTable Design LLC · partstable.com