The Bolt,shear, cataloged under National Stock Number 5306-01-520-9991, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-520-9991 |
| Primary Part Number | BACB30MY5K2 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.037 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN |
| Fastener Length | 0.437 INCHES NOMINAL IN |
| Thread Length | 0.312 INCHES NOMINAL IN |
| Material Document and Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.125 INCHES NOMINAL IN |
| Grip Diameter | 0.1621 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN |
| Color | BLACK OVERALL |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 95000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.242 INCHES MINIMUM AND 0.262 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 |
|---|---|
| BACB30MY5K2 | Hi-Shear Corporation (USA) |
| BACB30MY5K2 | Huck International, Inc (USA) |
| BACB30MY5K2 | West Coast Aerospace, Inc. (USA) |
| BACB30MY5K2 | Blanc Aero Industries Uk Ltd (GBR) |
| BACB30MY5K2 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30MY5K2 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30MY5K2 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30MY5K2 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| BACB30MY5K2 | Howmet Global Fastening Systems Inc (USA) |
| BACB30MY5K2 | Blanc Aero Industries - Groupe Lisi Aerospace (FRA) |
| Reference | Meaning |
|---|---|
| BACB30MY5K2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-520-9991 is a Bolt,shear, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-520-9991 has 10 manufacturer part numbers on file: BACB30MY5K2 (Hi-Shear Corporation), BACB30MY5K2 (Huck International, Inc), BACB30MY5K2 (West Coast Aerospace, Inc.), BACB30MY5K2 (Blanc Aero Industries Uk Ltd), BACB30MY5K2 (Howmet Global Fastening Systems Inc Div City of Industry Operations) and 5 more.
Key specifications for BACB30MY5K2: Head Height: 0.037 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN; Fastener Length: 0.437 INCHES NOMINAL IN; Thread Length: 0.312 INCHES NOMINAL IN; Material Document and Classification: AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.