The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-587-5031, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Msc Industrial Direct Co., Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-587-5031 |
| Primary Part Number | 80918121 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Msc Industrial Direct Co., Inc. |
| Status | ACTIVE |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL UNS K03104 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 80918121 | Msc Industrial Direct Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| 460-032 | C/1 Advisory reference — outside the item-of-supply concept Ajax Tocco Magnethermic Corporation Dba Pines Engineering Div Pines Engineering |
| 460-032 | 3/9 Design control — primary reference Risk Industries Llc Dba Pines Technology Div Headquarters |
NSN 5305-01-587-5031 is a Screw,cap,socket Head, manufactured by Msc Industrial Direct Co., Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-587-5031 has 1 manufacturer part number on file: 80918121 (Msc Industrial Direct Co., Inc.).
Key specifications for 80918121: Fastener Length: 0.375 INCHES NOMINAL IN; Nominal Thread Diameter: 0.312 INCHES IN; Thread Direction: RIGHT-HAND; Part Name Assigned by Controlling Agency: SCREW CAP SOCKET HEAD. 7 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.