The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-535-5570, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-535-5570 |
| Primary Part Number | B1831DH050010N |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 2.2 MILLIMETERS NOMINAL MM |
| Head Height | 4.8 MILLIMETERS MINIMUM AND 5.0 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 4H6H |
| Fastener Length | 10.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 0.8 |
| Thread Length | 9.8 MILLIMETERS NOMINAL MM |
| Material Document and Classification | ASTM A380,PROPERTY CLASS A1-70 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 5.0 MILLIMETERS MM |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | A1 |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | M |
| Head Diameter | 8.3 MILLIMETERS MINIMUM AND 8.5 MILLIMETERS MAXIMUM 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 |
|---|---|
| B1831DH050010N PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| B1831DH050010N | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-535-5570 is a Screw,cap,socket Head, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-535-5570 has 1 manufacturer part number on file: B1831DH050010N (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for B1831DH050010N: Width Across Flats: 2.2 MILLIMETERS NOMINAL MM; Head Height: 4.8 MILLIMETERS MINIMUM AND 5.0 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 4H6H; Fastener Length: 10.0 MILLIMETERS NOMINAL MM. 18 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.