The Screw,close Tolerance, cataloged under National Stock Number 5305-01-428-7615, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-428-7615 |
| Primary Part Number | BACB30FB3-9 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 0.900 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TY1,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.338 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.1900 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.258 INCHES MINIMUM AND 0.305 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 |
|---|---|
| BACB30FB3-9 | Hi-Shear Corporation (USA) |
| BACB30FB3-9 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BACB30FB3-9 | Huck International, Inc (USA) |
| BACB30FB3-9 | Howmet Global Fastening Systems Inc (USA) |
| BACB30FB3-9 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30FB3-9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30FB3-9 | 5/9 Secondary reference Voi-Shan/chatsworth Div of Vsi Corp Sub of Fairchild Industries Inc |
| BACB30FB3-9 | 5/2 Secondary reference U.S. Government activity |
| BACB30FB3-9 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-428-7615 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-428-7615 has 6 manufacturer part numbers on file: BACB30FB3-9 (Hi-Shear Corporation), BACB30FB3-9 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), BACB30FB3-9 (Huck International, Inc), BACB30FB3-9 (Howmet Global Fastening Systems Inc), BACB30FB3-9 (Howmet Global Fastening Systems Inc Div City of Industry Operations) and 1 more.
Key specifications for BACB30FB3-9: Fastener Length: 0.900 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TY1,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.338 INCHES NOMINAL IN; Material Document and Classification: MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 18 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.