PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C31Clamp,synchro

Designatronics Incorporated Div Sterling Instruments Div · NSN 5340-00-604-9656 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-604-9656 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-604-9656. Primary manufacturer part number: C31.
Features
  • Clamp,synchro — FSC 5340
  • Material Document and Classification: QQ-S-764,COND H FED SPEC SINGLE MATERIAL RESPONSE
  • Length: 0.328 INCHES NOMINAL IN
  • Material: STEEL COMP 416
  • Width: 0.213 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN
  • Height: 0.113 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
  • Surface Treatment: PASSIVATE
  • Surface Treatment Document and Classification: MIL-F-14072,FINISH E3 MIL SPEC SINGLE TREATMENT RESPONSE
Applications
  • Applications requiring Steel Comp 416 construction
General Description

The Clamp,synchro, cataloged under National Stock Number 5340-00-604-9656, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Designatronics Incorporated Div Sterling Instruments Div. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-604-9656
Primary Part NumberC31
Item NameClamp,synchro
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerDesignatronics Incorporated Div Sterling Instruments Div
StatusCANCELLED
Material Document and ClassificationQQ-S-764,COND H FED SPEC SINGLE MATERIAL RESPONSE
Length0.328 INCHES NOMINAL IN
MaterialSTEEL COMP 416
Width0.213 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN
Height0.113 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE
Surface Treatment Document and ClassificationMIL-F-14072,FINISH E3 MIL SPEC SINGLE TREATMENT RESPONSE
Hole Diameter0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
Furnished ItemsLOCKNUT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 6
No Item Name Available
2940-00-076-2601C31P INTERCHANGEABLE
Filter Element,fluid
Honeywell International Inc Dba Honeywell Div Consumer Products Group
5330-00-295-8839C31 INTERCHANGEABLE
Gasket
Gardner Denver Inc.
3120-00-332-0275C31 INTERCHANGEABLE
Bearing,washer,thrust
Butterworth, Inc.
2940-00-825-4397C120E INTERCHANGEABLE
Filter Element,fluid
Honeywell International Inc Dba Honeywell Div Consumer Products Group
5895-01-196-7217203059-1 INTERCHANGEABLE
Arm Assembly
Bae Systems Information and Electronic Systems Integration Inc.
Cross-Reference Index
Part NumberManufacturer
203-059-0005 Kearfott Corporation Div Guidance and Navigation Division (USA)
5340006049656 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
203-059-1 Kearfott Corporation Div Guidance and Navigation Division (USA)
C31 PRIMARY Designatronics Incorporated Div Sterling Instruments Div (USA)
8437429 Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA)
Related Parts
5340-00-981-0640SUCCESSOR
NO ITEM NAME AVAILABLE
2940-00-076-2601INTERCHANGEABLE
FILTER ELEMENT,FLUID
C31P
5330-00-295-8839INTERCHANGEABLE
GASKET
C31
3120-00-332-0275INTERCHANGEABLE
BEARING,WASHER,THRUST
C31
2940-00-825-4397INTERCHANGEABLE
FILTER ELEMENT,FLUID
C120E
5895-01-196-7217INTERCHANGEABLE
ARM ASSEMBLY
203059-1

Frequently Asked Questions

What is NSN 5340-00-604-9656?

NSN 5340-00-604-9656 is a Clamp,synchro, manufactured by Designatronics Incorporated Div Sterling Instruments Div, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-604-9656?

NSN 5340-00-604-9656 has 5 cross-referenced part numbers: 203-059-0005 (Kearfott Corporation Div Guidance and Navigation Division), 5340006049656 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), 203-059-1 (Kearfott Corporation Div Guidance and Navigation Division), C31 (Designatronics Incorporated Div Sterling Instruments Div), 8437429 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).

What NSN replaces 5340-00-604-9656?

There are 6 known substitutes for 5340-00-604-9656: 5340-00-981-0640, 2940-00-076-2601, 5330-00-295-8839 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C31?

Key specifications for C31: Material Document and Classification: QQ-S-764,COND H FED SPEC SINGLE MATERIAL RESPONSE; Length: 0.328 INCHES NOMINAL IN; Material: STEEL COMP 416; Width: 0.213 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-604-9656 still in active supply?

NSN 5340-00-604-9656 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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