The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-312-0239, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Apollo Aerospace Components Llc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-312-0239 |
| Primary Part Number | 509441-1616 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Apollo Aerospace Components Llc |
| Status | ACTIVE |
| Head Height | 1.000 INCHES MAXIMUM IN |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES MINIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 6150 OR STEEL COMP 4140 OR STEEL COMP E4340 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.313 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 |
|---|---|
| 509441-1616 | Apollo Aerospace Components Llc (USA) |
| 509441-1616 | Metrican Inc Dba Metrix Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| NAF1341-1616 | 5/9 Secondary reference Aerospace Industries Association of America Inc |
| 509441-1616 | 3/2 Design control — primary reference U.S. Government activity |
| 1341-1616 | 5/9 Secondary reference U.S. Government activity |
| 9282487-01 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-312-0239 is a Screw,cap,socket Head, manufactured by Apollo Aerospace Components Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-312-0239 has 2 manufacturer part numbers on file: 509441-1616 (Apollo Aerospace Components Llc), 509441-1616 (Metrican Inc Dba Metrix Manufacturing Company).
Key specifications for 509441-1616: Head Height: 1.000 INCHES MAXIMUM IN; Fastener Length: 2.000 INCHES NOMINAL IN; Thread Length: 1.500 INCHES MINIMUM IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL. 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.