The Tool Kit,screw Thread Insert, cataloged under National Stock Number 5180-00-178-0046, is classified within Federal Supply Class 5180 (Sets, Kits, and Outfits of Hand Tools) of the Hand Tools group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5180-00-178-0046 |
| Primary Part Number | K4-258-258L |
| Item Name | Tool Kit,screw Thread Insert |
| FSC / FSG | 5180 / 51 — Sets, Kits, and Outfits of Hand Tools |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Component Quantity | 87 |
| Nonsupply Items and Quantities | CONTAINS 1/4-28 UNF SELF-LOCKING 6-POINT INSERTS (40); 1/4-28 UNF NON-LOCKING 4-POINT INSERTS (40); STEP DRILL (1); TAP (1); DRIVE WRENCH (2); SWAGE TOOL (1); REMOVAL TOOL (1) |
| Furnished Items | BOX |
| 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 |
|---|---|
| K4-258-258L | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 10082415 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| K4-258-258L | 3/2 Design control — primary reference U.S. Government activity |
| 5180PL1234384 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5180-00-178-0046 is a Tool Kit,screw Thread Insert, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5180, Sets, Kits, and Outfits of Hand Tools. Status: active.
NSN 5180-00-178-0046 has 1 manufacturer part number on file: K4-258-258L (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for K4-258-258L: Component Quantity: 87; Nonsupply Items and Quantities: CONTAINS 1/4-28 UNF SELF-LOCKING 6-POINT INSERTS (40); 1/4-28 UNF NON-LOCKING 4-POINT INSERTS (40); STEP DRILL (1); TAP (1); DRIVE WRENCH (2); SWAGE TOOL (1); REMOVAL TOOL (1); Special Features: SOLID, ONE-PIECE; HIGH STRENGTH; PRIMARILY FOR USE IN ALUMINUM AND MAGNESIUM; Furnished Items: BOX. 3 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.