The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-598-8543, 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 20 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 | 5305-01-598-8543 |
| Primary Part Number | 91290A848 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Width Across Flats | 14.0 MILLIMETERS NOMINAL MM |
| Head Height | 16.0 MILLIMETERS NOMINAL MM |
| Fastener Length | 130.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 2.0 |
| Thread Length | 44.0 MILLIMETERS MINIMUM AND 54.0 MILLIMETERS MAXIMUM MM |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM OVERALL |
| Material Document and Classification | DIN 912 INTERNATIONAL STD/SPEC ALL MATERIAL RESPONSES AND ISO 4762 INTERNATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 16.0 MILLIMETERS MM |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 14.0 MILLIMETERS NOMINAL MM |
| Nonstandard Thread Pitch Diameter | -14.0 TO 18.0 MILLIMETERS MM |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE OVERALL |
| Minimum Tensile Strength | 174000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 12.9 |
| Material | STEEL OVERALL |
| Thread Series Designator | M |
| Head Diameter | 24.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 91290A848 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-598-8543 is a Screw,cap,socket Head, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-598-8543 has 1 manufacturer part number on file: 91290A848 (Mcmaster-Carr Supply Co).
Key specifications for 91290A848: Width Across Flats: 14.0 MILLIMETERS NOMINAL MM; Head Height: 16.0 MILLIMETERS NOMINAL MM; Fastener Length: 130.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 2.0. 20 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.