The Screw,machine, cataloged under National Stock Number 5305-01-261-1868, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-261-1868 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Head Height | 0.250 INCHES NOMINAL IN |
| Screw Surface Treatment | NICKEL AND CADMIUM AND CHROMATE |
| Fastener Length | 0.688 INCHES NOMINAL IN |
| Screw Material Document and Classification | AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE |
| Extended Washer Diameter | 0.312 INCHES NOMINAL IN |
| Thread Length | 0.606 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN |
| Hardness Rating | 42.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | DOUBLE HEXAGON W/ HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Screw Material | STEEL COMP 601 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 36 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Screw Surface Treatment Document and Classification | AMS 2416 ASSN STD ALL TREATMENT RESPONSES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 5305PL0213312 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 10113606 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MS9207-09 | 2/2 Government specification standardization U.S. Government activity |
NSN 5305-01-261-1868 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-261-1868: Extended Washer Thickness: 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN; Head Height: 0.250 INCHES NOMINAL IN; Screw Surface Treatment: NICKEL AND CADMIUM AND CHROMATE; Fastener Length: 0.688 INCHES NOMINAL IN. 17 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.