The Screw,shoulder, cataloged under National Stock Number 5305-01-435-5707, 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 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-435-5707 |
| Primary Part Number | BACB30ZD7-47Y |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 3.579 INCHES MINIMUM AND 3.609 INCHES MAXIMUM IN |
| Shoulder Length | 2.928 INCHES MINIMUM AND 2.948 INCHES MAXIMUM OVERALL IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Shoulder Diameter | 0.4672 INCHES MINIMUM AND 0.4682 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.656 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6040 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1607 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | CADMIUM AND CHROMATE 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 | 20 |
| Material | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.826 INCHES MINIMUM AND 0.888 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 |
|---|---|
| BACB30ZD7-47Y | Hi-Shear Corporation (USA) |
| BACB30ZD7-47Y | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30ZD7-47Y | Howmet Global Fastening Systems Inc (USA) |
| BACB30ZD7-47Y | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30ZD7-47Y | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| NAS1607-47 | 5/9 Secondary reference U.S. Government activity |
| BACB30ZD7-47Y | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-435-5707 is a Screw,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-435-5707 has 5 manufacturer part numbers on file: BACB30ZD7-47Y (Hi-Shear Corporation), BACB30ZD7-47Y (Sps Technologies, Llc Dba PB Fasteners), BACB30ZD7-47Y (Howmet Global Fastening Systems Inc), BACB30ZD7-47Y (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30ZD7-47Y (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for BACB30ZD7-47Y: Fastener Length: 3.579 INCHES MINIMUM AND 3.609 INCHES MAXIMUM IN; Shoulder Length: 2.928 INCHES MINIMUM AND 2.948 INCHES MAXIMUM OVERALL IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; Shoulder Diameter: 0.4672 INCHES MINIMUM AND 0.4682 INCHES MAXIMUM FIRST SHOULDER IN. 20 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.