The Screw,machine, cataloged under National Stock Number 5305-01-052-5811, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-052-5811 |
| Primary Part Number | 3MFR509-10R27 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Screw Surface Treatment | CADMIUM AND CHROMATE |
| Fastener Length | 1.703 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| Thread Length | 0.437 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Surface Treatment | NICKEL |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 4037 OR STEEL COMP 8630 |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.327 INCHES MINIMUM AND 0.385 INCHES MAXIMUM 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 |
|---|---|
| 3MFR509 | Reed and Prince Mfg Co (USA) |
| 3MFR509-10R27 PRIMARY | The Boeing Company Div Defense (USA) |
| 3MFR509 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3MFR509 | Howmet Global Fastening Systems Inc (USA) |
NSN 5305-01-052-5811 is a Screw,machine, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-052-5811 has 4 manufacturer part numbers on file: 3MFR509 (Reed and Prince Mfg Co), 3MFR509-10R27 (The Boeing Company Div Defense), 3MFR509 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3MFR509 (Howmet Global Fastening Systems Inc).
Key specifications for 3MFR509-10R27: Screw Surface Treatment: CADMIUM AND CHROMATE; Fastener Length: 1.703 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN; Thread Length: 0.437 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. 16 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.