NSN 5340-01-174-7745 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-174-7745. Manufacturer of record part number: C321KM1.
General Characteristics Item Description: 4 SCREWS 0.138-32UNC; DISTANCE BETWEEN UPPER SCREWS CENTER TO CENTER 1.59 IN.; DISTANCE BETWEEN UPPER SCREWS AND LOWER SCREWS CENTER TO CENTER 0.91 IN.; LENGTH 1.97 IN.; HEIGHT 3.41 IN.; DEPTH 1.52 IN. IN
2 manufacturer part numbers on file
Manufacturer of record: Eaton Corp Opns & Technical Center
Identification
NSN: 5340-01-174-7745
NIIN: 011747745
FSC: 5340 — Hardware, Commercial
FSG: 53 — Hardware and Abrasives
Primary part number: C321KM1
Manufacturer: Eaton Corp Opns & Technical Center
General Description
The Mechanical Interlock, cataloged under National Stock Number 5340-01-174-7745, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Eaton Corp Opns & Technical Center. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
Technical Specifications
Parameter
Value
NSN
5340-01-174-7745
Primary Part Number
C321KM1
Item Name
Mechanical Interlock
FSC / FSG
5340 / 53 — Hardware, Commercial
Manufacturer
Eaton Corp Opns & Technical Center
Status
ACTIVE
General Characteristics Item Description
4 SCREWS 0.138-32UNC; DISTANCE BETWEEN UPPER SCREWS CENTER TO CENTER 1.59 IN.; DISTANCE BETWEEN UPPER SCREWS AND LOWER SCREWS CENTER TO CENTER 0.91 IN.; LENGTH 1.97 IN.; HEIGHT 3.41 IN.; DEPTH 1.52 IN. IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Jednolity Indeks Materialowy - Uniform Material Index
No interchangeability data on file.
Other items in FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068
COVER,ACCESS
5340-00-000-0132
SEAT,HELICAL COMPRESSION SPRING
5340-00-000-8150
5340-00-000-8150 · Item name not on file
5340-00-001-1251
5340-00-001-1251 · Item name not on file
5340-00-001-1264
STRAP,WEBBING
5340-00-001-1265
STRAP,WEBBING
5340-00-001-1266
STRAP,WEBBING
5340-00-001-1275
HANDLE,DOOR
Frequently Asked Questions
What is NSN 5340-01-174-7745?
NSN 5340-01-174-7745 is a Mechanical Interlock, manufactured by Eaton Corp Opns & Technical Center, classified under FSC 5340, Hardware, Commercial. Status: active.
What part numbers are listed for NSN 5340-01-174-7745?
NSN 5340-01-174-7745 has 2 manufacturer part numbers on file: 5433034-1 (Naval Sea Systems Command), C321KM1 (Eaton Corp Opns & Technical Center).
What are the specifications of C321KM1?
Key specifications for C321KM1: General Characteristics Item Description: 4 SCREWS 0.138-32UNC; DISTANCE BETWEEN UPPER SCREWS CENTER TO CENTER 1.59 IN.; DISTANCE BETWEEN UPPER SCREWS AND LOWER SCREWS CENTER TO CENTER 0.91 IN.; LENGTH 1.97 IN.; HEIGHT 3.41 IN.; DEPTH 1.52 IN. IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 5340-01-174-7745 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.