PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8521Strap,retaining

Cinch Connectivity Solutions Inc. · NSN 5340-00-598-8648 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-598-8648 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-598-8648. Primary manufacturer part number: 8521.
Features
  • Strap,retaining — FSC 5340
  • Material Thickness: 0.037 INCHES NOMINAL IN
  • Cushion: NOT INCLUDED
  • Style Designator: CURVED ARCH
  • Surface Treatment: CADMIUM
  • Material: STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED
  • Inside Diameter/arch Length: 0.3125 INCHES NOMINAL IN
  • Mounting Hole Size: 0.144 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Corrosion Resisting Location Not Otherwise Specified construction
General Description

The Strap,retaining, cataloged under National Stock Number 5340-00-598-8648, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cinch Connectivity Solutions Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-598-8648
Primary Part Number8521
Item NameStrap,retaining
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerCinch Connectivity Solutions Inc.
StatusCANCELLED
Material Thickness0.037 INCHES NOMINAL IN
CushionNOT INCLUDED
Style DesignatorCURVED ARCH
Surface TreatmentCADMIUM
MaterialSTEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED
Inside Diameter/arch Length0.3125 INCHES NOMINAL IN
Mounting Hole Size0.144 INCHES NOMINAL IN
Distance Between Base and Inside of Arch0.2187 INCHES NOMINAL IN
Mounting PadNOT INCLUDED
Center to Center Distance Between Arch and Mounting Hole0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 8
No Item Name Available
5360-00-321-27408521 INTERCHANGEABLE
Spring,helical,compression
Cummins Inc.
1075-00-383-82663134722B INTERCHANGEABLE
Eccentric
Naval Ship Systems Command
4730-00-408-7900830-012 INTERCHANGEABLE
Coupling,pipe
Nibco Inc Chemtrol Div
5365-00-448-47298521 INTERCHANGEABLE
Spacer,sleeve
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5975-00-878-48738521 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
1680-01-257-24458521 INTERCHANGEABLE
Gearbox Assembly,aircraft
Cef Industries, Llc Dba Cef Industries Inc
8115-01-303-4524 INTERCHANGEABLE
Box,shipping
Cross-Reference Index
Part NumberManufacturer
8521 Cinch Connectivity Solutions Inc. (USA)
Related Parts
5340-00-598-2437SUCCESSOR
NO ITEM NAME AVAILABLE
5360-00-321-2740INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
8521
1075-00-383-8266INTERCHANGEABLE
ECCENTRIC
3134722B
4730-00-408-7900INTERCHANGEABLE
COUPLING,PIPE
830-012
5365-00-448-4729INTERCHANGEABLE
SPACER,SLEEVE
8521
5975-00-878-4873INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
8521
1680-01-257-2445INTERCHANGEABLE
GEARBOX ASSEMBLY,AIRCRAFT
8521
8115-01-303-4524INTERCHANGEABLE
BOX,SHIPPING

Frequently Asked Questions

What is NSN 5340-00-598-8648?

NSN 5340-00-598-8648 is a Strap,retaining, manufactured by Cinch Connectivity Solutions Inc., classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-598-8648?

NSN 5340-00-598-8648 has 1 cross-referenced part number: 8521 (Cinch Connectivity Solutions Inc.).

What NSN replaces 5340-00-598-8648?

There are 8 known substitutes for 5340-00-598-8648: 5340-00-598-2437, 5360-00-321-2740, 1075-00-383-8266 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8521?

Key specifications for 8521: Material Thickness: 0.037 INCHES NOMINAL IN; Cushion: NOT INCLUDED; Style Designator: CURVED ARCH; Surface Treatment: CADMIUM. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-598-8648 still in active supply?

NSN 5340-00-598-8648 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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