The Clamp,synchro, cataloged under National Stock Number 5340-01-307-8044, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Alliant Techsystems Operations Llc Div Defense Electronic Systems. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-307-8044 |
| Primary Part Number | 2662991 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Alliant Techsystems Operations Llc Div Defense Electronic Systems |
| Status | ACTIVE |
| Length | 3.000 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A581,COND A ASSN STD SINGLE MATERIAL RESPONSE |
| Nominal Thread Size | 0.164 INCHES IN |
| Height | 0.300 INCHES NOMINAL IN |
| Width | 0.750 INCHES NOMINAL IN |
| Thread Class | 2B |
| Material | STEEL CORROSION RESISTING |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Furnished Items | LOCKNUT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 2662991 PRIMARY | Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA) |
NSN 5340-01-307-8044 is a Clamp,synchro, manufactured by Alliant Techsystems Operations Llc Div Defense Electronic Systems, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-307-8044 has 1 manufacturer part number on file: 2662991 (Alliant Techsystems Operations Llc Div Defense Electronic Systems).
Key specifications for 2662991: Length: 3.000 INCHES NOMINAL IN; Material Document and Classification: ASTM A581,COND A ASSN STD SINGLE MATERIAL RESPONSE; Nominal Thread Size: 0.164 INCHES IN; Height: 0.300 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.