The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-643-5166, 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 15 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 | 5305-01-643-5166 |
| Primary Part Number | 92196A640 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Width Across Flats | 0.312 INCHES NOMINAL IN |
| Head Height | 0.375 INCHES NOMINAL IN |
| Fastener Length | 4.00 INCHES NOMINAL IN |
| Thread Length | 1.250 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 ROCKWELL B MINIMUM OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 70000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL PROPERTY CLASS 18.8 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.562 INCHES NOMINAL 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 |
|---|---|
| 92196A640 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-643-5166 is a Screw,cap,socket Head, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-643-5166 has 1 manufacturer part number on file: 92196A640 (Mcmaster-Carr Supply Co).
Key specifications for 92196A640: Width Across Flats: 0.312 INCHES NOMINAL IN; Head Height: 0.375 INCHES NOMINAL IN; Fastener Length: 4.00 INCHES NOMINAL IN; Thread Length: 1.250 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN. 15 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.