The Screw,machine, cataloged under National Stock Number 5305-01-225-9642, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-225-9642 |
| Primary Part Number | BACS12CK3U6 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.380 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.318 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | IRON ALLOY 660 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED 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 |
|---|---|
| BACS12CK3U6 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BACS12CK3U6 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACS12CK3U6 | 3-V Fastener Co., Inc. (USA) |
| BACS12CK3U6 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACS12CK3U6 PRIMARY | Federal Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| BACS12CK3U6 | 7/2 Vendor item drawing reference U.S. Government activity |
| BACS12CK3U6 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-225-9642 is a Screw,machine, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-225-9642 has 5 manufacturer part numbers on file: BACS12CK3U6 (Howmet Global Fastening Systems Inc), BACS12CK3U6 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACS12CK3U6 (3-V Fastener Co., Inc.), BACS12CK3U6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACS12CK3U6 (Federal Manufacturing Corp).
Key specifications for BACS12CK3U6: Head Height: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.380 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE. 15 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.