The Clamp,synchro, cataloged under National Stock Number 5340-00-561-2858, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-561-2858 |
| Primary Part Number | GC503E04CER |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Length | 0.390 INCHES MAXIMUM IN |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 26512-GC503 MANUFACTURERS SPECIFICATION |
| Height | 0.125 INCHES NOMINAL IN |
| Width | 0.320 INCHES NOMINAL IN |
| Material | STEEL COMP 316 |
| 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 |
|---|---|
| 406074 | Timber Top Inc (USA) |
| GC503E04CER PRIMARY | Northrop Grumman Systems Corporation (USA) |
| PC99023-1 | Rockwell Collins, Inc. Dba Rc Displays Systems (USA) |
| L3-30 | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| Reference | Meaning |
|---|---|
| 10117400 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 414765-19 | 7/2 Vendor item drawing reference U.S. Government activity |
| 42-P28468Y001 | 5/9 Secondary reference York Mfg Co |
NSN 5340-00-561-2858 is a Clamp,synchro, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-561-2858 has 4 manufacturer part numbers on file: 406074 (Timber Top Inc), GC503E04CER (Northrop Grumman Systems Corporation), PC99023-1 (Rockwell Collins, Inc. Dba Rc Displays Systems), L3-30 (Roller Bearing Co of America, Inc Div Pic Design).
3 possible matches (shared part number, not a government interchangeability claim): 1430-01-308-7005, 6210-01-425-3542, 5310-01-654-7372. Verify interchangeability with system specifications before substitution.
Key specifications for GC503E04CER: Length: 0.390 INCHES MAXIMUM IN; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE; Specification/standard Data: 26512-GC503 MANUFACTURERS SPECIFICATION; Height: 0.125 INCHES NOMINAL IN. 7 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.