The Locknut,tube Fitting, cataloged under National Stock Number 4730-01-703-2988, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Berg Manufacturing, Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-703-2988 |
| Primary Part Number | 5-13-11040-3 |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Berg Manufacturing, Inc. |
| Status | ACTIVE |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.25 INCHES IN |
| Surface Treatment | ZINC OVERALL |
| Nut Style | TUBE FITTING LOCKNUT |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5-13-11040-3 PRIMARY | Berg Manufacturing, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5-13-11040 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4730-01-703-2988 is a Locknut,tube Fitting, manufactured by Berg Manufacturing, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-703-2988 has 1 manufacturer part number on file: 5-13-11040-3 (Berg Manufacturing, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-703-3021, 4730-01-703-3023. Verify interchangeability with system specifications before substitution.
Key specifications for 5-13-11040-3: Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.25 INCHES IN; Special Features: FEMALE, STRAIGHT, SWIVEL. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.