The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-476-9819, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-476-9819 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.312 INCHES NOMINAL IN |
| Fastener Length | 2.062 INCHES MAXIMUM IN |
| Thread Length | 1.811 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-286,CL A FED SPEC 1ST MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 4 TYPE |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | NICKEL ALLOY K-500 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.872 INCHES MINIMUM AND 0.938 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 |
| Reference | Meaning |
|---|---|
| 6015169 PIECE 13 | 5/1 Secondary reference Naval Sea Systems Command |
| 0.500-13UNC-2AX2.062IN. K-MONEL | 2/2 Government specification standardization U.S. Government activity |
| 6817320-110 | 5/1 Secondary reference Naval Sea Systems Command |
| 6817320 ITEM 110 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 0.500-13UNC-2AX 2.062IN.K-MONEL | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| FF-S-86 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-476-9819 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-476-9819: Width Across Flats: 0.312 INCHES NOMINAL IN; Fastener Length: 2.062 INCHES MAXIMUM IN; Thread Length: 1.811 INCHES NOMINAL IN; Material Document and Classification: QQ-N-286,CL A FED SPEC 1ST MATERIAL RESPONSE OVERALL. 16 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.