The Bolt,shear, cataloged under National Stock Number 5306-01-238-4497, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-238-4497 |
| Primary Part Number | BACB30ST7-32 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Head Height | 0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Fastener Length | 2.863 INCHES MINIMUM AND 2.893 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STAND-OFF |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.878 INCHES NOMINAL IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM STAND-OFF |
| Hardness Rating | 48.0 ROCKWELL C MINIMUM SPRING |
| Material Document and Classification | AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE STAND-OFF |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 5TH MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.437 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM IN |
| Width Between Flats | 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Grip Diameter | 0.4363 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| Locking Feature | RETAINER THREADS |
| Surface Treatment | PASSIVATE STAND-OFF |
| Surface Treatment | PASSIVATE SPRING |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 631 SPRING |
| Material | STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 FASTENER |
| Material | STEEL COMP 630 STAND-OFF |
| 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 |
|---|---|
| BACB30ST7-32 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| BACB30ST7-32 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30ST7-32 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30ST7-32 | 5/9 Secondary reference U.S. Government activity |
| BACB30ST7-32 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company |
| BACB30ST7-32 | 5/2 Secondary reference U.S. Government activity |
| BACB30ST7-32 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-238-4497 is a Bolt,shear, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-238-4497 has 2 manufacturer part numbers on file: BACB30ST7-32 (Howmet Global Fastening Systems Inc. Div Tridair Products), BACB30ST7-32 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for BACB30ST7-32: Head Height: 0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN; Fastener Length: 2.863 INCHES MINIMUM AND 2.893 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STAND-OFF. 28 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.