PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GC1525Plug,expansion

Concentric Rockford Inc · NSN 5340-00-677-8457 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-677-8457 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-677-8457. Primary manufacturer part number: GC1525.
Features
  • Plug,expansion — FSC 5340
  • Material Thickness: 0.062 INCHES NOMINAL IN
  • Outside Diameter: 0.682 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
  • Style Designator: CONCAVE
  • Radius: 0.875 INCHES NOMINAL IN
  • Material: STEEL
  • 2 verified cross-references
  • Primary manufacturer: Concentric Rockford Inc
Applications
  • Applications requiring Steel construction
General Description

The Plug,expansion, cataloged under National Stock Number 5340-00-677-8457, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Concentric Rockford Inc. Government technical data includes 5 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-677-8457
Primary Part NumberGC1525
Item NamePlug,expansion
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerConcentric Rockford Inc
StatusACTIVE
Material Thickness0.062 INCHES NOMINAL IN
Outside Diameter0.682 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
Style DesignatorCONCAVE
Radius0.875 INCHES NOMINAL IN
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 1
3020-00-006-7462GC15-25 INTERCHANGEABLE
Gear,spur
Secs Inc
Cross-Reference Index
Part NumberManufacturer
GC1525 Stewart & Stevenson Power Products Llc (USA)
GC1525 PRIMARY Concentric Rockford Inc (USA)
Related Parts
3020-00-006-7462INTERCHANGEABLE
GEAR,SPUR
GC15-25

Frequently Asked Questions

What is NSN 5340-00-677-8457?

NSN 5340-00-677-8457 is a Plug,expansion, manufactured by Concentric Rockford Inc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-677-8457?

NSN 5340-00-677-8457 has 2 cross-referenced part numbers: GC1525 (Stewart & Stevenson Power Products Llc), GC1525 (Concentric Rockford Inc).

What NSN replaces 5340-00-677-8457?

There is 1 known substitute for 5340-00-677-8457: 3020-00-006-7462. Verify interchangeability with system specifications before substitution.

What are the specifications of GC1525?

Key specifications for GC1525: Material Thickness: 0.062 INCHES NOMINAL IN; Outside Diameter: 0.682 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN; Style Designator: CONCAVE; Radius: 0.875 INCHES NOMINAL IN. 5 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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