The Setscrew, cataloged under National Stock Number 5305-01-030-5542, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hilco Plastics Products Co Inc Dba Hilco Technologies. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-030-5542 |
| Primary Part Number | 1/4-28X.50LONG |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hilco Plastics Products Co Inc Dba Hilco Technologies |
| Status | ACTIVE |
| Fastener Length | 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | POINTLESS |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 642AS1005-1 | Product Components Corporation (USA) |
| 1/4-28X.50LONG PRIMARY | Hilco Plastics Products Co Inc Dba Hilco Technologies (USA) |
| 642AS1005-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1/4-28X.50LONG | C/1 Advisory reference — outside the item-of-supply concept Product Components Corporation |
| 1/4-28X.50LONG | 5/9 Secondary reference Nylomatic |
NSN 5305-01-030-5542 is a Setscrew, manufactured by Hilco Plastics Products Co Inc Dba Hilco Technologies, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-030-5542 has 3 manufacturer part numbers on file: 642AS1005-1 (Product Components Corporation), 1/4-28X.50LONG (Hilco Plastics Products Co Inc Dba Hilco Technologies), 642AS1005-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1/4-28X.50LONG: Fastener Length: 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN; Head Style: HEADLESS (SETSCREW); Thread Direction: RIGHT-HAND. 10 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.