The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-156-0719, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is New York Fasteners. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-156-0719 |
| Primary Part Number | 019058-1 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | New York Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.063 INCHES NOMINAL IN |
| Head Height | 0.060 INCHES NOMINAL IN |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 4-40 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.207 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 |
|---|---|
| 019058-1 | New York Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 4-40UNC3AX1/4 | 5/9 Secondary reference Allen Mfg Co Sub of Chicago Pneumatic Tool Co |
| 10115471 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 019058-1 | 3/9 Design control — primary reference Sci Systems Inc |
NSN 5305-01-156-0719 is a Screw,cap,socket Head, manufactured by New York Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-156-0719 has 1 manufacturer part number on file: 019058-1 (New York Fasteners).
Key specifications for 019058-1: Width Across Flats: 0.063 INCHES NOMINAL IN; Head Height: 0.060 INCHES NOMINAL IN; Fastener Length: 0.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL. 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.