The Screw,machine, cataloged under National Stock Number 5305-00-680-5889, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-680-5889 |
| Primary Part Number | BACB30LU-4D-35 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 2.562 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 81205-BACB30AB MANUFACTURERS STANDARD |
| Screw Material | STEEL |
| Minimum Tensile Strength | 160000 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 | 28 |
| Thread Series Designator | UNF |
| Head Diameter | 0.511 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 |
|---|---|
| BACB30LU-4D-35 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LU-4D-35 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LU-4D-35 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| BACB30LU-4D-35 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LU-4D-35 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LU-4D-35 | Huck International, Inc (USA) |
| BACB30LU-4D-35 | Indiana Wheel and Rim Co Inc (USA) |
| BACB30LU-4D-35 | Federal Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| BACB30ABP4-35 | 5/2 Secondary reference U.S. Government activity |
| BACB30ABP4-35 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-680-5889 is a Screw,machine, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-680-5889 has 8 manufacturer part numbers on file: BACB30LU-4D-35 (Sps Technologies, Llc Dba PB Fasteners), BACB30LU-4D-35 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LU-4D-35 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), BACB30LU-4D-35 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LU-4D-35 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 3 more.
Key specifications for BACB30LU-4D-35: Screw Surface Treatment: CADMIUM; Fastener Length: 2.562 INCHES NOMINAL IN; Thread Length: 0.375 INCHES MINIMUM IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 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.