The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-429-9342, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-429-9342 |
| Primary Part Number | 512-6404652 ITEM 20 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL OVERALL |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Thread Series Designator | UNRC |
| Head Diameter | 0.938 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 |
|---|---|
| 512-6404652 ITEM 20 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 751-6402604 FIND 24 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402608 FIND 22 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402607-22 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402603-24 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402606-22 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402603 FIND 24 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402603 ITEM 22 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402601 ITEM 24 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402605 ITEM 22 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402607 ITEM 22 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402606 FIND 22 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402602 FIND 24 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 0.500-13UNRC-3AX 1.000L | 3/1 Design control — primary reference U.S. Government activity |
| 751-6402601-PC24 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 751-6402605-22 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5305-01-429-9342 is a Screw,cap,socket Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-429-9342 has 1 manufacturer part number on file: 512-6404652 ITEM 20 (Naval Sea Systems Command).
Key specifications for 512-6404652 ITEM 20: Width Across Flats: 0.375 INCHES NOMINAL IN; Fastener Length: 1.000 INCHES NOMINAL IN; Nominal Thread Diameter: 0.500 INCHES IN; Head Style: FLAT COUNTERSUNK. 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.