The Clamp,synchro, cataloged under National Stock Number 5340-01-493-8554, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Timber Top Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-493-8554 |
| Primary Part Number | 203052-425 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Timber Top Inc |
| Status | ACTIVE |
| Style Designator | CLEAT |
| Outside Diameter | 0.260 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.450 INCHES IN |
| Effective Height | 0.031 INCHES NOMINAL IN |
| Height | 0.040 INCHES NOMINAL IN |
| Distance From Hole Center to End | 0.091 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Material | STEEL COMP 316 OR PLASTIC POLYHEXAMETHYLENE AMIDE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 203052-425 PRIMARY | Timber Top Inc (USA) |
| Reference | Meaning |
|---|---|
| 365-134-0031 | D/9 Drawing number reference only U.S. Government activity |
| 365-134-0031-25 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-493-8554 is a Clamp,synchro, manufactured by Timber Top Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-493-8554 has 1 manufacturer part number on file: 203052-425 (Timber Top Inc).
Key specifications for 203052-425: Style Designator: CLEAT; Outside Diameter: 0.260 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Nominal Thread Size: 0.450 INCHES IN; Effective Height: 0.031 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.