The Setscrew, cataloged under National Stock Number 5305-01-178-7399, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-178-7399 |
| Primary Part Number | 16704227 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Head Height | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Fastener Length | 5.990 INCHES MINIMUM AND 6.010 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 8 |
| Material | STEEL COMP 1020 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 16704227 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 16704227 | 3/9 Design control — primary reference U.S. Government activity |
| D11FM16AJ48 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-178-7399 is a Setscrew, manufactured by Fairbanks Morse, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-178-7399 has 1 manufacturer part number on file: 16704227 (Fairbanks Morse, Llc).
Key specifications for 16704227: Head Height: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN; Fastener Length: 5.990 INCHES MINIMUM AND 6.010 INCHES MAXIMUM IN; Nominal Thread Diameter: 1.000 INCHES IN; Head Style: SQUARE. 11 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.