The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-137-7282, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Federal Manufacturing Corp. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-137-7282 |
| Primary Part Number | BACB30SX8-10 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Federal Manufacturing Corp |
| Status | ACTIVE |
| Surface Finish | 0.8 MICROINCHES GRIP |
| Surface Finish | 3.2 MICROINCHES BEARING SURFACE OF HEAD |
| Surface Finish | 3.2 MICROINCHES HEAD |
| Surface Finish | 3.2 MICROINCHES THREADS |
| Head Height | 5.35 MILLIMETERS MINIMUM AND 5.70 MILLIMETERS MAXIMUM MM |
| Fastener Length | 33.88 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.25 |
| Thread Length | 18.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 15.875 MILLIMETERS NOMINAL MM |
| Width Between Flats | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM MM |
| Grip Diameter | 7.9850 MILLIMETERS MINIMUM AND 8.0000 MILLIMETERS MAXIMUM MM |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 1100 POUNDS PER SQUARE INCH LBS |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | M |
| 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 |
|---|---|
| BACB30SX8-10 | Federal Manufacturing Corp (USA) |
| 74597-M8125-10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VS 3078-8-10 | 5/2 Secondary reference U.S. Government activity |
| BACB30SX8-10 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-137-7282 is a Bolt,close Tolerance, manufactured by Federal Manufacturing Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-137-7282 has 2 manufacturer part numbers on file: BACB30SX8-10 (Federal Manufacturing Corp), 74597-M8125-10 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for BACB30SX8-10: Surface Finish: 0.8 MICROINCHES GRIP; Surface Finish: 3.2 MICROINCHES BEARING SURFACE OF HEAD; Surface Finish: 3.2 MICROINCHES HEAD; Surface Finish: 3.2 MICROINCHES THREADS. 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.