PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M3-91Latch Set,mortise

Southco Inc · NSN 5340-01-681-6061 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-681-6061 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-681-6061. Primary manufacturer part number: M3-91.
Features
  • Latch Set,mortise — FSC 5340
  • Width: 50.00 MILLIMETERS NOMINAL MM
  • Operation Method: PUSH BUTTON OVERALL
  • Length: 110.00 MILLIMETERS NOMINAL MM
  • Material: STEEL HOUSING
  • 1 verified cross-reference
  • Primary manufacturer: Southco Inc
Applications
  • Applications requiring Steel Housing construction
General Description

The Latch Set,mortise, cataloged under National Stock Number 5340-01-681-6061, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Southco Inc. Government technical data includes 4 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-681-6061
Primary Part NumberM3-91
Item NameLatch Set,mortise
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerSouthco Inc
StatusACTIVE
Width50.00 MILLIMETERS NOMINAL MM
Operation MethodPUSH BUTTON OVERALL
Length110.00 MILLIMETERS NOMINAL MM
MaterialSTEEL HOUSING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 3
5820-00-498-0730391A INTERCHANGEABLE
Panel
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6220-01-313-8975 INTERCHANGEABLE
Light,dome
5310-01-413-1706M-3-91 INTERCHANGEABLE
Washer,flat
Xto, Incorporated Dba Xto Inc
Cross-Reference Index
Part NumberManufacturer
M3-91 PRIMARY Southco Inc (USA)
Related Parts
5820-00-498-0730INTERCHANGEABLE
PANEL
391A
6220-01-313-8975INTERCHANGEABLE
LIGHT,DOME
5310-01-413-1706INTERCHANGEABLE
WASHER,FLAT
M-3-91

Frequently Asked Questions

What is NSN 5340-01-681-6061?

NSN 5340-01-681-6061 is a Latch Set,mortise, manufactured by Southco Inc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-681-6061?

NSN 5340-01-681-6061 has 1 cross-referenced part number: M3-91 (Southco Inc).

What NSN replaces 5340-01-681-6061?

There are 3 known substitutes for 5340-01-681-6061: 5820-00-498-0730, 6220-01-313-8975, 5310-01-413-1706. Verify interchangeability with system specifications before substitution.

What are the specifications of M3-91?

Key specifications for M3-91: Width: 50.00 MILLIMETERS NOMINAL MM; Operation Method: PUSH BUTTON OVERALL; Length: 110.00 MILLIMETERS NOMINAL MM; End Item Identification: LLH0B2633. 6 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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