The Setscrew, cataloged under National Stock Number 5305-01-018-8071, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Atec Inc. Government technical data includes 21 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-018-8071 |
| Primary Part Number | 103-3019-5 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Atec Inc |
| Status | ACTIVE |
| Point Diameter | 0.229 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Head Height | 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Point Length | 0.190 INCHES NOMINAL IN |
| Fastener Length | 0.838 INCHES MINIMUM AND 0.848 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.648 INCHES MINIMUM AND 0.658 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-H-6875 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Point Chamfer Angle | 90.0 DEGREES NOMINAL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM 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 |
|---|---|
| 103-3019-5 PRIMARY | Atec Inc (USA) |
NSN 5305-01-018-8071 is a Setscrew, manufactured by Atec Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-018-8071 has 1 manufacturer part number on file: 103-3019-5 (Atec Inc).
Key specifications for 103-3019-5: Point Diameter: 0.229 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN; Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN; Point Length: 0.190 INCHES NOMINAL IN. 21 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.