The Bolt,u, cataloged under National Stock Number 5306-01-057-0306, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Umpco, Inc. Dba Umpco Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-057-0306 |
| Primary Part Number | BACC10LR12-12S |
| Item Name | Bolt,u |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Inside Distance Between Shanks | 0.750 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN |
| Thread Length | 0.380 INCHES NOMINAL IN |
| Distance From Inside Center of Bend to Bolt End | 1.500 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN |
| Style Designator | ROUND BEND |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| BACC10LR12-12S | Umpco, Inc. Dba Umpco Inc (USA) |
| Reference | Meaning |
|---|---|
| BACC10LR12-12S | 3/2 Design control — primary reference U.S. Government activity |
| BACC10Y12-12S | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-057-0306 is a Bolt,u, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-057-0306 has 1 manufacturer part number on file: BACC10LR12-12S (Umpco, Inc. Dba Umpco Inc).
Key specifications for BACC10LR12-12S: Inside Distance Between Shanks: 0.750 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN; Thread Length: 0.380 INCHES NOMINAL IN; Distance From Inside Center of Bend to Bolt End: 1.500 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN; Style Designator: ROUND BEND. 10 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.