The Bolt,shear, cataloged under National Stock Number 5306-01-372-6442, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-372-6442 |
| Primary Part Number | 20-057-12-48DD |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.375 INCHES NOMINAL IN |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.252 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-B-7838 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.749 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.093 INCHES NOMINAL IN |
| Width Between Flats | 1.058 INCHES NOMINAL IN |
| Grip Diameter | 0.759 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL 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 |
|---|---|
| 20-057-12-48DD | Howmet Global Fastening Systems Inc (USA) |
| 20-057-12-48DD | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 20-057-12-48DD | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 20-057-12-48DD | Saturn Fasteners Inc (USA) |
| 20-057-12-48DD | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 20-057-12-48DD | 5/9 Secondary reference Aerospace Rivet Mfrs Corp |
| 20-057-12-48DD | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-372-6442 is a Bolt,shear, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-372-6442 has 5 manufacturer part numbers on file: 20-057-12-48DD (Howmet Global Fastening Systems Inc), 20-057-12-48DD (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 20-057-12-48DD (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 20-057-12-48DD (Saturn Fasteners Inc), 20-057-12-48DD (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 20-057-12-48DD: Head Height: 0.375 INCHES NOMINAL IN; Fastener Length: 0.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.252 INCHES MAXIMUM IN. 16 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.