The Clip,retaining, cataloged under National Stock Number 5340-00-449-5042, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is United Technologies Corp Electro Systems 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-00-449-5042 |
| Primary Part Number | SP1028 |
| Item Name | Clip,retaining |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | United Technologies Corp Electro Systems Inc |
| Status | ACTIVE |
| Style Designator | PIN |
| Stock Diameter | 0.042 INCHES NOMINAL IN |
| Casehardening Indicator | CASEHARDENED |
| Surface Treatment | NICKEL |
| Width | 0.175 INCHES NOMINAL IN |
| 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 |
| Part Number | Manufacturer |
|---|---|
| SP1028 PRIMARY | United Technologies Corp Electro Systems Inc (USA) |
| SP1074 | United Technologies Corp Electro Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| SP1074 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
| SP1028 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
NSN 5340-00-449-5042 is a Clip,retaining, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-449-5042 has 2 manufacturer part numbers on file: SP1028 (United Technologies Corp Electro Systems Inc), SP1074 (United Technologies Corp Electro Systems Inc).
Key specifications for SP1028: Overall Height: 0.562 INCHES NOMINAL IN; Style Designator: PIN; Stock Diameter: 0.042 INCHES NOMINAL IN; Casehardening Indicator: CASEHARDENED. 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.