The Screw,machine, cataloged under National Stock Number 5305-01-581-8977, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Commercial. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-581-8977 |
| Primary Part Number | BACB30VF3K7 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Commercial |
| Status | ACTIVE |
| Screw Surface Treatment | ALUMINUM |
| Fastener Length | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Thread Length | 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Shank Surface Treatment | ALUMINUM |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Surface Treatment | ALUMINUM |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | TITANIUM ALLOY |
| Color | BLACK |
| Internal Drive Style | TORQUE-SET RIBBED |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.271 INCHES MINIMUM AND 0.303 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 |
|---|---|
| BACB30VF3K7 PRIMARY | The Boeing Company Div Commercial (USA) |
| Reference | Meaning |
|---|---|
| BACB30VF3K7 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-01-581-8977 is a Screw,machine, manufactured by The Boeing Company Div Commercial, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-581-8977 has 1 manufacturer part number on file: BACB30VF3K7 (The Boeing Company Div Commercial).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-669-3908. Verify interchangeability with system specifications before substitution.
Key specifications for BACB30VF3K7: Screw Surface Treatment: ALUMINUM; Fastener Length: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN; Thread Length: 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN; Shank Surface Treatment: ALUMINUM. 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.