The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-052-8939, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mid-America Aerotech, Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-052-8939 |
| Primary Part Number | 41A597 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mid-America Aerotech, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.078 INCHES NOMINAL IN |
| Head Height | 0.188 INCHES NOMINAL IN |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Hole Configuration Style | ROUND INTERNAL HEXAGON |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Hole Quantity | 2 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.045 INCHES NOMINAL IN |
| Head Diameter | 0.313 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 |
|---|---|
| 41A597 | Mid-America Aerotech, Llc (USA) |
| Reference | Meaning |
|---|---|
| 41A597 | 5/9 Secondary reference U.S. Government activity |
| 41A597 | C/1 Advisory reference — outside the item-of-supply concept Moog Inc Div Moog Inc., Space and Defense - Salt Lake City |
| 41A597 | 3/9 Design control — primary reference E-Systems Inc Montek Div Fluid Controls Opns |
NSN 5305-00-052-8939 is a Screw,cap,socket Head, manufactured by Mid-America Aerotech, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-052-8939 has 1 manufacturer part number on file: 41A597 (Mid-America Aerotech, Llc).
Key specifications for 41A597: Width Across Flats: 0.078 INCHES NOMINAL IN; Head Height: 0.188 INCHES NOMINAL IN; Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.375 INCHES MINIMUM IN. 18 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.