The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-608-3246, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is 3-V Fastener Co., Inc.. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5305-01-608-3246 |
| Primary Part Number | BACS12GU4K10 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | 3-V Fastener Co., Inc. |
| Status | ACTIVE |
| Head Height | 0.244 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN |
| Fastener Length | 0.100 INCHES NOMINAL IN |
| Thread Length | 0.400 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | TEE NO. 1 |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.410 INCHES MINIMUM IN |
| Width Between Flats | 0.234 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| BACS12GU4K10 | 3-V Fastener Co., Inc. (USA) |
| BACS12GU4K10 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACS12GU4K10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACS12GU4K10 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACS12GU4K10 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| BACS12GU4K10 | 5/2 Secondary reference U.S. Government activity |
| BACS12GU4K10 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-608-3246 is a Screw,cap,hexagon Head, manufactured by 3-V Fastener Co., Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-608-3246 has 5 manufacturer part numbers on file: BACS12GU4K10 (3-V Fastener Co., Inc.), BACS12GU4K10 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACS12GU4K10 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACS12GU4K10 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACS12GU4K10 (Huck International, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-669-6978. Verify interchangeability with system specifications before substitution.
Key specifications for BACS12GU4K10: Head Height: 0.244 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN; Fastener Length: 0.100 INCHES NOMINAL IN; Thread Length: 0.400 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 12 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.