The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-668-3438, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-668-3438 |
| Primary Part Number | 92186A855 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Head Height | 0.46875 INCHES NOMINAL IN |
| Fastener Length | 5.00 INCHES NOMINAL IN |
| Thread Length | 1.75 INCHES MINIMUM IN |
| Hardness Rating | 70.0 ROCKWELL B NOMINAL OVERALL |
| Nominal Thread Diameter | 0.75 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.125 INCHES NOMINAL IN |
| Minimum Tensile Strength | 70000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 10 |
| Material | STEEL COMP 316 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 |
|---|---|
| 92186A855 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 2-H-75C-500 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-668-3438 is a Screw,cap,hexagon Head, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-668-3438 has 1 manufacturer part number on file: 92186A855 (Mcmaster-Carr Supply Co).
Key specifications for 92186A855: Head Height: 0.46875 INCHES NOMINAL IN; Fastener Length: 5.00 INCHES NOMINAL IN; Thread Length: 1.75 INCHES MINIMUM IN; Hardness Rating: 70.0 ROCKWELL B NOMINAL OVERALL. 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.