The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-178-8629, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Simmonds Precision Products Inc. 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 | 5305-00-178-8629 |
| Primary Part Number | S6340CESCR411 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Simmonds Precision Products Inc |
| Status | ACTIVE |
| Head Height | 0.088 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN |
| Fastener Length | 0.625 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN |
| Thread Length | 0.575 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | STRIP THREADS |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.166 INCHES MINIMUM AND 0.183 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 |
| Part Number | Manufacturer |
|---|---|
| S6340CESCR411 PRIMARY | Simmonds Precision Products Inc (USA) |
NSN 5305-00-178-8629 is a Screw,cap,socket Head, manufactured by Simmonds Precision Products Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-178-8629 has 1 manufacturer part number on file: S6340CESCR411 (Simmonds Precision Products Inc).
Key specifications for S6340CESCR411: Head Height: 0.088 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN; Fastener Length: 0.625 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN; Thread Length: 0.575 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.112 INCHES IN. 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.