The Shield,expansion, cataloged under National Stock Number 5340-01-081-5680, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-081-5680 |
| Item Name | Shield,expansion |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Thread Provision | THREADED |
| Hole Accommodation Diameter | 0.750 INCHES NOMINAL IN |
| Fastener Type | NUT |
| Insert Type for Which Designed | STUD BOLT |
| Nondefinitive Spec/std Data | 2 GRADE AND 4 TYPE AND 1 CLASS |
| Surface Treatment | ZINC |
| Material | STEEL |
| 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 |
| Reference | Meaning |
|---|---|
| FF-S-325 | 4/1 Identification reference U.S. Government activity |
| 3450 | 5/9 Secondary reference Tulsa Screw Products Co Inc |
| 101640 | 3/9 Design control — primary reference Tulsa Screw Products Co Inc |
NSN 5340-01-081-5680 is a Shield,expansion, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-081-5680: Thread Provision: THREADED; Hole Accommodation Diameter: 0.750 INCHES NOMINAL IN; Fastener Type: NUT; Overall Length: 5.000 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.