The Screw,machine, cataloged under National Stock Number 5305-01-003-5303, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Unison Industries Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-003-5303 |
| Primary Part Number | 68301 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Head Height | 0.092 INCHES NOMINAL IN |
| Screw Surface Treatment | NICKEL AND SOLDER |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Screw Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES |
| Thread Length | 0.188 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | BINDING |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.335 INCHES NOMINAL IN |
| 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 |
|---|---|
| 68301 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 68301 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-003-5303 is a Screw,machine, manufactured by Unison Industries Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-003-5303 has 1 manufacturer part number on file: 68301 (Unison Industries Llc).
4 possible matches (shared part number, not a government interchangeability claim): 2815-01-073-1436, 4730-01-289-9565, 5340-01-361-1279. Verify interchangeability with system specifications before substitution.
Key specifications for 68301: Head Height: 0.092 INCHES NOMINAL IN; Screw Surface Treatment: NICKEL AND SOLDER; Fastener Length: 0.250 INCHES NOMINAL IN; Screw Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES. 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.