The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-585-5706, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-585-5706 |
| Primary Part Number | B1831BH080030N |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Width Across Flats | 6.0 MILLIMETERS NOMINAL MM |
| Head Height | 8.0 MILLIMETERS NOMINAL MM |
| Fastener Length | 33.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.2 |
| Thread Length | 33.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 37.0 ROCKWELL C NOMINAL OVERALL |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ZINC OVERALL |
| Minimum Tensile Strength | 174 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Material | STEEL OVERALL |
| Thread Series Designator | ISO M |
| Head Diameter | 13.0 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 |
|---|---|
| 95263A647 | Mcmaster-Carr Supply Co (USA) |
| B1831BH080030N PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 5305-01-585-5706 is a Screw,cap,socket Head, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-585-5706 has 2 manufacturer part numbers on file: 95263A647 (Mcmaster-Carr Supply Co), B1831BH080030N (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-603-1177. Verify interchangeability with system specifications before substitution.
Key specifications for B1831BH080030N: Width Across Flats: 6.0 MILLIMETERS NOMINAL MM; Head Height: 8.0 MILLIMETERS NOMINAL MM; Fastener Length: 33.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.2. 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.