The Setscrew, cataloged under National Stock Number 5305-01-129-0559, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5305-01-129-0559 |
| Primary Part Number | 645405B9SS7V |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Width Across Flats | 0.094 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Thread Length | 0.688 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) |
| 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 |
|---|---|
| 645405B9SS7V | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 645405B9SS7V | 3/2 Design control — primary reference U.S. Government activity |
| 10115186 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-129-0559 is a Setscrew, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-129-0559 has 1 manufacturer part number on file: 645405B9SS7V (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 645405B9SS7V: Width Across Flats: 0.094 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN; Fastener Length: 0.750 INCHES NOMINAL IN; Thread Length: 0.688 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 INCHES IN. 13 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.