The Screw,machine, cataloged under National Stock Number 5305-01-391-2890, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-391-2890 |
| Primary Part Number | 2576672-8 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona |
| Status | ACTIVE |
| Screw Surface Treatment | TIN |
| Fastener Length | 0.455 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN |
| Screw Material Document and Classification | QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-626 FED SPEC 3RD MATERIAL RESPONSE |
| Thread Length | 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.060 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 1 TYPE AND 2S STYLE |
| Screw Material | COPPER ALLOY 260 OR COPPER ALLOY 360 |
| Internal Drive Style | SLOT |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 80 |
| Thread Series Designator | UNF |
| Head Diameter | 0.099 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | MIL-T-10727, TY1 MIL SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| 2576672-8 | Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona (USA) |
| 2576672-8 | Crescent Manufacturing Operating Company (USA) |
| Reference | Meaning |
|---|---|
| 2576672-8 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 2576672-8 | 7/2 Vendor item drawing reference Raytheon Company |
NSN 5305-01-391-2890 is a Screw,machine, manufactured by Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-391-2890 has 2 manufacturer part numbers on file: 2576672-8 (Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona), 2576672-8 (Crescent Manufacturing Operating Company).
Key specifications for 2576672-8: Screw Surface Treatment: TIN; Fastener Length: 0.455 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN; Screw Material Document and Classification: QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-626 FED SPEC 3RD MATERIAL RESPONSE; Thread Length: 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN. 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.