The Clamp,loop, cataloged under National Stock Number 5340-01-514-2239, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Umpco, Inc. Dba Umpco Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-514-2239 |
| Primary Part Number | S278DT16 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Style Designator | SADDLE MOUNT |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 0.673 INCHES NOMINAL IN |
| Center to Center Distance Between Loop and Mounting Hole | 0.455 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY OVERALL |
| Loop Inside Diameter | 1.000 INCHES NOMINAL IN |
| 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 |
|---|---|
| S278DT16 PRIMARY | Umpco, Inc. Dba Umpco Inc (USA) |
| GC500AM16T | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 978-16T | 5/2 Secondary reference U.S. Government activity |
NSN 5340-01-514-2239 is a Clamp,loop, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-514-2239 has 2 manufacturer part numbers on file: S278DT16 (Umpco, Inc. Dba Umpco Inc), GC500AM16T (Northrop Grumman Systems Corporation).
Key specifications for S278DT16: Style Designator: SADDLE MOUNT; Overall Length: 2.346 INCHES NOMINAL IN; Overall Width: 0.500 INCHES NOMINAL IN; Material Thickness: 0.040 INCHES NOMINAL IN. 6 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.