The Clamp,loop, cataloged under National Stock Number 5340-00-366-2221, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-00-366-2221 |
| Primary Part Number | 8158870 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc |
| Status | ACTIVE |
| Style Designator | T-BOLT |
| Integral Nut Type and Quantity | 1 SELF-LOCKING T BOLT |
| Material | STEEL CORROSION RESISTING BAND |
| Loop Inside Diameter | 10.375 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 |
|---|---|
| 8158870 PRIMARY | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc (USA) |
| Reference | Meaning |
|---|---|
| 8158870 | 5/9 Secondary reference General Motors Corp |
| 8158870 | 3/9 Design control — primary reference General Motors Corp Electro-Motive Div |
NSN 5340-00-366-2221 is a Clamp,loop, manufactured by Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-366-2221 has 1 manufacturer part number on file: 8158870 (Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc).
Key specifications for 8158870: Style Designator: T-BOLT; Integral Nut Type and Quantity: 1 SELF-LOCKING T BOLT; Material: STEEL CORROSION RESISTING BAND; Loop Inside Diameter: 10.375 INCHES NOMINAL IN. 4 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.