PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11438978Clamp,synchro

Us Army Aviation and Missile Command · NSN 5340-01-267-1271 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-267-1271 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-267-1271. Primary manufacturer part number: 11438978.
Features
  • Clamp,synchro — FSC 5340
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE
  • Height: 0.140 INCHES NOMINAL IN
  • Furnished Items: LOCKNUT
  • Material: STEEL
  • Hole Diameter: 0.113 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
  • Length: 0.380 INCHES NOMINAL IN
  • Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE
Applications
  • Applications requiring Steel construction
General Description

The Clamp,synchro, cataloged under National Stock Number 5340-01-267-1271, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5340-01-267-1271
Primary Part Number11438978
Item NameClamp,synchro
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerUs Army Aviation and Missile Command
StatusACTIVE
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE
Height0.140 INCHES NOMINAL IN
Furnished ItemsLOCKNUT
MaterialSTEEL
Hole Diameter0.113 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
Length0.380 INCHES NOMINAL IN
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE
Width0.570 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN
Surface TreatmentCADMIUM AND CHROMATE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 3
5330-00-527-7851502-150 INTERCHANGEABLE
Sleeve,seal,coupler
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
5910-00-903-8336281-0511-00 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Tektronix, Inc.
6220-01-417-3327502150 INTERCHANGEABLE
Panel,indicating,light Transmitt
Airco Industries, Inc. Dba Photo Etch Div Photo Etch
Cross-Reference Index
Part NumberManufacturer
502150 Rotron Incorporated (USA)
11438978 PRIMARY Us Army Aviation and Missile Command (USA)
Related Parts
5330-00-527-7851INTERCHANGEABLE
SLEEVE,SEAL,COUPLER
502-150
5910-00-903-8336INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
281-0511-00
6220-01-417-3327INTERCHANGEABLE
PANEL,INDICATING,LIGHT TRANSMITT
502150

Frequently Asked Questions

What is NSN 5340-01-267-1271?

NSN 5340-01-267-1271 is a Clamp,synchro, manufactured by Us Army Aviation and Missile Command, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-267-1271?

NSN 5340-01-267-1271 has 2 cross-referenced part numbers: 502150 (Rotron Incorporated), 11438978 (Us Army Aviation and Missile Command).

What NSN replaces 5340-01-267-1271?

There are 3 known substitutes for 5340-01-267-1271: 5330-00-527-7851, 5910-00-903-8336, 6220-01-417-3327. Verify interchangeability with system specifications before substitution.

What are the specifications of 11438978?

Key specifications for 11438978: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE; Height: 0.140 INCHES NOMINAL IN; Furnished Items: LOCKNUT; Material: STEEL. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com