PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

638Bumper

Atlantic India Rubber Co Inc · NSN 5340-00-266-0743 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-266-0743 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-266-0743. Primary manufacturer part number: 638.
Features
  • Bumper — FSC 5340
  • First Counterbore Diameter: 0.281 INCHES NOMINAL IN
  • Style Designator: PAN TOP COUNTERBORED
  • First Counterbore Depth: 0.281 INCHES NOMINAL IN
  • Outside/top Flange Diameter: 1.000 INCHES NOMINAL IN
  • Hole Diameter: 0.156 INCHES NOMINAL IN
  • Color: BLACK
  • 2 verified cross-references
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Bumper, cataloged under National Stock Number 5340-00-266-0743, 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 6 verified specifications, 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-266-0743
Primary Part Number638
Item NameBumper
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerAtlantic India Rubber Co Inc
StatusCANCELLED
First Counterbore Diameter0.281 INCHES NOMINAL IN
Style DesignatorPAN TOP COUNTERBORED
First Counterbore Depth0.281 INCHES NOMINAL IN
Outside/top Flange Diameter1.000 INCHES NOMINAL IN
Hole Diameter0.156 INCHES NOMINAL IN
ColorBLACK
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 2
No Item Name Available
Bumper
Cross-Reference Index
Part NumberManufacturer
RF16-8 Mm Electronic Enclosures Inc (USA)
638 PRIMARY Atlantic India Rubber Co Inc (USA)
Related Parts
5340-00-922-3384SUCCESSOR
NO ITEM NAME AVAILABLE
5340-01-324-8428SUCCESSOR
BUMPER

Frequently Asked Questions

What is NSN 5340-00-266-0743?

NSN 5340-00-266-0743 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 5340-00-266-0743?

NSN 5340-00-266-0743 has 2 cross-referenced part numbers: RF16-8 (Mm Electronic Enclosures Inc), 638 (Atlantic India Rubber Co Inc).

What NSN replaces 5340-00-266-0743?

There are 2 known substitutes for 5340-00-266-0743: 5340-00-922-3384, 5340-01-324-8428. Verify interchangeability with system specifications before substitution.

What are the specifications of 638?

Key specifications for 638: First Counterbore Diameter: 0.281 INCHES NOMINAL IN; Overall Height: 0.500 INCHES NOMINAL IN; Style Designator: PAN TOP COUNTERBORED; First Counterbore Depth: 0.281 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-266-0743 still in active supply?

NSN 5340-00-266-0743 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.
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