The Screw,close Tolerance, cataloged under National Stock Number 5305-01-209-0506, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Leroi International Inc Dba Compair Leroi. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-209-0506 |
| Primary Part Number | 56178 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Leroi International Inc Dba Compair Leroi |
| Status | ACTIVE |
| Fastener Length | 10.00 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 8.0 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Thread Direction | RIGHT-HAND |
| Thread Series Designator | M |
| 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 |
|---|---|
| 56178 PRIMARY | Leroi International Inc Dba Compair Leroi (USA) |
| Reference | Meaning |
|---|---|
| 56178 | 5/9 Secondary reference Compair Kellogg Div of Robertshaw Controls Co |
NSN 5305-01-209-0506 is a Screw,close Tolerance, manufactured by Leroi International Inc Dba Compair Leroi, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-209-0506 has 1 manufacturer part number on file: 56178 (Leroi International Inc Dba Compair Leroi).
1 possible match (shared part number, not a government interchangeability claim): 5855-01-582-5632. Verify interchangeability with system specifications before substitution.
Key specifications for 56178: Fastener Length: 10.00 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.0; Thread Length: 8.0 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM; Nominal Thread Diameter: 6.0 MILLIMETERS MM. 6 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.