PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6840Padlock

Master Lock Company Llc · NSN 5340-01-661-0581 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-661-0581 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-661-0581. Primary manufacturer part number: 6840.
Features
  • Padlock — FSC 5340
  • Shackle Diameter: 8.0 MILLIMETERS NOMINAL MM
  • Color: BRONZE
  • Shackle Clearance: 30.0 MILLIMETERS NOMINAL MM
  • Operating Mechanism Type: PIN TUMBLER
  • Material: BRASS BODY
  • 1 verified cross-reference
  • Primary manufacturer: Master Lock Company Llc
Applications
  • Applications requiring Brass Body construction
General Description

The Padlock, cataloged under National Stock Number 5340-01-661-0581, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Master Lock Company Llc. Government technical data includes 5 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5340-01-661-0581
Primary Part Number6840
Item NamePadlock
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMaster Lock Company Llc
StatusACTIVE
Shackle Diameter8.0 MILLIMETERS NOMINAL MM
ColorBRONZE
Shackle Clearance30.0 MILLIMETERS NOMINAL MM
Operating Mechanism TypePIN TUMBLER
MaterialBRASS BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-188-3513SPP72-0003 INTERCHANGEABLE
Plug,pipe
Ward Leonard Ct Llc
4730-00-277-713320040 INTERCHANGEABLE
Clamp,hose
Breeze-Eastern Llc
6740-00-433-4976 INTERCHANGEABLE
Table,light,photographic
6105-00-539-9243263293PC1 INTERCHANGEABLE
Rotor,motor
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5330-00-710-869849746 INTERCHANGEABLE
Seal,plain Encased
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
6625-00-933-5407 INTERCHANGEABLE
Battery Tube
7125-01-030-21326840 INTERCHANGEABLE
Cabinet,storage
Tab Products Co. Llc Dba Tab Products Co Llc
5305-01-173-34362BA544 INTERCHANGEABLE
Screw,machine
Oshkosh Defense Llc
7530-01-298-7418684-0 INTERCHANGEABLE
Paper,copying,thermographic Proc
Oce Imagistics Inc Div Copier
6510-01-340-4466OG-4PC INTERCHANGEABLE
Bandage,cast,impregnated
Bsn Medical Inc
Cross-Reference Index
Part NumberManufacturer
6840 PRIMARY Master Lock Company Llc (USA)
Related Parts
4730-00-188-3513INTERCHANGEABLE
PLUG,PIPE
SPP72-0003
4730-00-277-7133INTERCHANGEABLE
CLAMP,HOSE
20040
6740-00-433-4976INTERCHANGEABLE
TABLE,LIGHT,PHOTOGRAPHIC
6105-00-539-9243INTERCHANGEABLE
ROTOR,MOTOR
263293PC1
5330-00-710-8698INTERCHANGEABLE
SEAL,PLAIN ENCASED
49746
6625-00-933-5407INTERCHANGEABLE
BATTERY TUBE
7125-01-030-2132INTERCHANGEABLE
CABINET,STORAGE
6840
5305-01-173-3436INTERCHANGEABLE
SCREW,MACHINE
2BA544
7530-01-298-7418INTERCHANGEABLE
PAPER,COPYING,THERMOGRAPHIC PROC
684-0
6510-01-340-4466INTERCHANGEABLE
BANDAGE,CAST,IMPREGNATED
OG-4PC
5130-01-393-1560INTERCHANGEABLE
SOCKET,SOCKET WRENCH
6840
5945-01-399-3234INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
6-840

Frequently Asked Questions

What is NSN 5340-01-661-0581?

NSN 5340-01-661-0581 is a Padlock, manufactured by Master Lock Company Llc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-661-0581?

NSN 5340-01-661-0581 has 1 cross-referenced part number: 6840 (Master Lock Company Llc).

What NSN replaces 5340-01-661-0581?

There are 12 known substitutes for 5340-01-661-0581: 4730-00-188-3513, 4730-00-277-7133, 6740-00-433-4976 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6840?

Key specifications for 6840: Shackle Diameter: 8.0 MILLIMETERS NOMINAL MM; Color: BRONZE; Overall Width: 44.0 MILLIMETERS NOMINAL MM; Shackle Clearance: 30.0 MILLIMETERS NOMINAL MM. 7 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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