PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

662-1Loop,strap Fastener

Buckles International, Inc. · NSN 5340-01-010-3840 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-010-3840 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-010-3840. Primary manufacturer part number: 662-1.
Features
  • Loop,strap Fastener — FSC 5340
  • Inside Height: 0.250 INCHES NOMINAL IN
  • Style Designator: FOOTMANS LOOP
  • Surface Treatment: NICKEL
  • Material: COPPER ALLOY
  • Hole Diameter: 0.219 INCHES NOMINAL IN
  • Inside Length: 1.031 INCHES NOMINAL IN
  • Outside Width: 0.500 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy construction
General Description

The Loop,strap Fastener, cataloged under National Stock Number 5340-01-010-3840, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Buckles International, Inc.. Government technical data includes 9 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-010-3840
Primary Part Number662-1
Item NameLoop,strap Fastener
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerBuckles International, Inc.
StatusACTIVE
Inside Height0.250 INCHES NOMINAL IN
Style DesignatorFOOTMANS LOOP
Surface TreatmentNICKEL
MaterialCOPPER ALLOY
Hole Diameter0.219 INCHES NOMINAL IN
Inside Length1.031 INCHES NOMINAL IN
Outside Width0.500 INCHES NOMINAL IN
Painted FeatureNOT INCLUDED
Center to Center Distance Between Holes1.906 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 9
5340-00-061-28396621 INTERCHANGEABLE
Clamp,loop
Walker Mfg Co
5935-00-089-7142160671 INTERCHANGEABLE
Connector,plug,electrical
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5960-00-553-5475 INTERCHANGEABLE
Electron Tube
6250-00-781-618466-21 INTERCHANGEABLE
Ballast,lamp
Day-Ray Products, Inc
6680-01-049-099253G-0206M-001 INTERCHANGEABLE
Tube,metering
Ametek Inc Schutte and Koerting Div
2920-01-243-00596621 INTERCHANGEABLE
Lead Set,ignition,engine
Standard Motor Products
5945-01-421-17866621 INTERCHANGEABLE
Solenoid,electrical
Rocker Solenoid Co Dba Rocker Solenoid Co
4920-01-573-62766621 INTERCHANGEABLE
Tire,aircraft,mater
Pdi Ground Support Systems, Inc.
5985-01-650-32296621 INTERCHANGEABLE
Coupler,directional
Edro Corporation, the Dba Edro Corp
Cross-Reference Index
Part NumberManufacturer
662-1 Buckles International, Inc. (USA)
124-0057-144 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
Related Parts
5340-00-061-2839INTERCHANGEABLE
CLAMP,LOOP
6621
5935-00-089-7142INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
160671
5960-00-553-5475INTERCHANGEABLE
ELECTRON TUBE
6250-00-781-6184INTERCHANGEABLE
BALLAST,LAMP
66-21
6680-01-049-0992INTERCHANGEABLE
TUBE,METERING
53G-0206M-001
2920-01-243-0059INTERCHANGEABLE
LEAD SET,IGNITION,ENGINE
6621
5945-01-421-1786INTERCHANGEABLE
SOLENOID,ELECTRICAL
6621
4920-01-573-6276INTERCHANGEABLE
TIRE,AIRCRAFT,MATER
6621
5985-01-650-3229INTERCHANGEABLE
COUPLER,DIRECTIONAL
6621

Frequently Asked Questions

What is NSN 5340-01-010-3840?

NSN 5340-01-010-3840 is a Loop,strap Fastener, manufactured by Buckles International, Inc., classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-010-3840?

NSN 5340-01-010-3840 has 2 cross-referenced part numbers: 662-1 (Buckles International, Inc.), 124-0057-144 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).

What NSN replaces 5340-01-010-3840?

There are 9 known substitutes for 5340-01-010-3840: 5340-00-061-2839, 5935-00-089-7142, 5960-00-553-5475 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 662-1?

Key specifications for 662-1: Inside Height: 0.250 INCHES NOMINAL IN; Style Designator: FOOTMANS LOOP; Surface Treatment: NICKEL; Material: COPPER ALLOY. 9 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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