The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-577-9931, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is International Organization for Standardization (iso). Government technical data includes 14 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 | 5305-01-577-9931 |
| Primary Part Number | ISO4762-M4X12-12.9-A2D |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | International Organization for Standardization (iso) |
| Status | ACTIVE |
| Width Across Flats | 3.0 MILLIMETERS NOMINAL MM |
| Head Height | 4.0 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | A2D |
| Fastener Length | 12.900 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 0.7 |
| Thread Length | 12.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 12.900 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 7.0 MILLIMETERS NOMINAL MM |
| Internal Drive Style | HEXAGON |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | ISO S |
| 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 |
|---|---|
| ISO4762-M4X12-12.9-A2D PRIMARY | International Organization for Standardization (iso) (CHE) |
NSN 5305-01-577-9931 is a Screw,cap,socket Head, manufactured by International Organization for Standardization (iso), classified under FSC 5305, Screws. Status: active.
NSN 5305-01-577-9931 has 1 manufacturer part number on file: ISO4762-M4X12-12.9-A2D (International Organization for Standardization (iso)).
Key specifications for ISO4762-M4X12-12.9-A2D: Width Across Flats: 3.0 MILLIMETERS NOMINAL MM; Head Height: 4.0 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: A2D; Fastener Length: 12.900 MILLIMETERS NOMINAL MM. 14 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.