The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-284-7689, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Nassau Tool Works, Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-284-7689 |
| Primary Part Number | 520007-2 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Nassau Tool Works, Inc |
| Status | ACTIVE |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Head Height | 1.000 INCHES NOMINAL IN |
| Fastener Length | 5.000 INCHES NOMINAL IN |
| Thread Length | 2.410 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Hole Configuration Style | HEXAGON FLATS |
| Material Document and Classification | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 8 |
| Material | STEEL COMP 4140 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Hole Type | DRILLED |
| Hole Diameter | 0.091 INCHES NOMINAL IN |
| Head Diameter | 1.500 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 | S |
| Part Number | Manufacturer |
|---|---|
| 520007-2 | Nassau Tool Works, Inc (USA) |
| 520007-2 | Quality Socket Screw Manufacturing Corp (USA) |
| 520007-2 | Stanfordville Machine & Manufacturing Co Inc (USA) |
| 520007-2 | Bek, Inc. Dba Level 1 Fasteners (USA) |
| 520007-2 | Bmf Corp. Dba Vegas Fastener Manufacturing (USA) |
| 520007-2 | U.s.a. Spares Inc. (USA) |
| Reference | Meaning |
|---|---|
| 520007-2 | 5/9 Secondary reference Computa-Base-Machining, Inc. |
| 520007-2 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 520007-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-284-7689 is a Screw,cap,socket Head, manufactured by Nassau Tool Works, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-284-7689 has 6 manufacturer part numbers on file: 520007-2 (Nassau Tool Works, Inc), 520007-2 (Quality Socket Screw Manufacturing Corp), 520007-2 (Stanfordville Machine & Manufacturing Co Inc), 520007-2 (Bek, Inc. Dba Level 1 Fasteners), 520007-2 (Bmf Corp. Dba Vegas Fastener Manufacturing) and 1 more.
Key specifications for 520007-2: Width Across Flats: 0.750 INCHES NOMINAL IN; Head Height: 1.000 INCHES NOMINAL IN; Fastener Length: 5.000 INCHES NOMINAL IN; Thread Length: 2.410 INCHES NOMINAL IN. 19 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.