PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

YC4-15Clamp,synchro

Designatronics Inc Perfect Gear and Instrument Div · NSN 5340-00-877-3412 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-877-3412 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-877-3412. Primary manufacturer part number: YC4-15.
Features
  • Clamp,synchro — FSC 5340
  • Hole Diameter: 0.1285 INCHES NOMINAL IN
  • Height: 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
  • Furnished Items: LOCKNUT
  • 7 verified cross-references
  • Primary manufacturer: Designatronics Inc Perfect Gear and Instrument Div
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Clamp,synchro, cataloged under National Stock Number 5340-00-877-3412, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Designatronics Inc Perfect Gear and Instrument Div. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-877-3412
Primary Part NumberYC4-15
Item NameClamp,synchro
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerDesignatronics Inc Perfect Gear and Instrument Div
StatusCANCELLED
Hole Diameter0.1285 INCHES NOMINAL IN
Height0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
Furnished ItemsLOCKNUT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
No Item Name Available
5340-00-497-4296120120 SUCCESSOR
Cap,protective,dust and Moisture
Eaton Aerospace, Llc Dba Jackson South
5975-00-245-1689 INTERCHANGEABLE
Conduit Outlet
5999-00-320-7765C17 INTERCHANGEABLE
Heater,thermal Release
Ward Leonard Ct Llc
3020-00-352-6002 INTERCHANGEABLE
Gear,internal
3120-00-394-7306C17 INTERCHANGEABLE
Bearing
Butterworth, Inc.
2940-00-428-3884C111A INTERCHANGEABLE
Filter Element,fluid
Honeywell International Inc Dba Honeywell Div Consumer Products Group
6210-00-453-5736900955 INTERCHANGEABLE
Light,indicator
Wascomat of America Div of Bermil Industries Corp
3040-00-524-9009252183 INTERCHANGEABLE
Shaft,shouldered
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
6685-00-670-7686C17 INTERCHANGEABLE
Thermocouple,heating Element
R S P Industries Inc
Cross-Reference Index
Part NumberManufacturer
YC4-15 PRIMARY Designatronics Inc Perfect Gear and Instrument Div (USA)
5340PL0846281 Jednolity Indeks Materialowy - Uniform Material Index (POL)
910250-17 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
C17 Designatronics Incorporated Div Sterling Instruments Div (USA)
252183 Raytheon Company Dba Raytheon (USA)
C17 PRIMARY Steego Corp (USA)
10392408 PRIMARY Us Army Aviation and Missile Command (USA)
Related Parts
5340-00-562-4024SUCCESSOR
NO ITEM NAME AVAILABLE
5340-00-497-4296SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
120120
5975-00-245-1689INTERCHANGEABLE
CONDUIT OUTLET
5999-00-320-7765INTERCHANGEABLE
HEATER,THERMAL RELEASE
C17
3020-00-352-6002INTERCHANGEABLE
GEAR,INTERNAL
3120-00-394-7306INTERCHANGEABLE
BEARING
C17
2940-00-428-3884INTERCHANGEABLE
FILTER ELEMENT,FLUID
C111A
6210-00-453-5736INTERCHANGEABLE
LIGHT,INDICATOR
900955
3040-00-524-9009INTERCHANGEABLE
SHAFT,SHOULDERED
252183
6685-00-670-7686INTERCHANGEABLE
THERMOCOUPLE,HEATING ELEMENT
C17
4130-01-004-3036INTERCHANGEABLE
CAPILLARY TUBE
C17
2540-01-108-5043INTERCHANGEABLE
SUPPORT,SEAT,VEHICULAR
12299254

Frequently Asked Questions

What is NSN 5340-00-877-3412?

NSN 5340-00-877-3412 is a Clamp,synchro, manufactured by Designatronics Inc Perfect Gear and Instrument Div, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-877-3412?

NSN 5340-00-877-3412 has 7 cross-referenced part numbers: YC4-15 (Designatronics Inc Perfect Gear and Instrument Div), 5340PL0846281 (Jednolity Indeks Materialowy - Uniform Material Index), 910250-17 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), C17 (Designatronics Incorporated Div Sterling Instruments Div), 252183 (Raytheon Company Dba Raytheon) and 2 more.

What NSN replaces 5340-00-877-3412?

There are 12 known substitutes for 5340-00-877-3412: 5340-00-562-4024, 5340-00-497-4296, 5975-00-245-1689 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of YC4-15?

Key specifications for YC4-15: Hole Diameter: 0.1285 INCHES NOMINAL IN; Height: 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN; Furnished Items: LOCKNUT. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-877-3412 still in active supply?

NSN 5340-00-877-3412 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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