The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-127-1083, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-127-1083 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 5.35 MILLIMETERS MINIMUM AND 5.65 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 4H |
| Fastener Length | 81.37 MILLIMETERS MINIMUM AND 82.63 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.25 |
| Thread Length | 17.12 MILLIMETERS MINIMUM AND 18.88 MILLIMETERS MAXIMUM MM |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 63.75 MILLIMETERS MINIMUM AND 64.25 MILLIMETERS MAXIMUM MM |
| Width Between Flats | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM MM |
| Grip Diameter | 7.9620 MILLIMETERS MINIMUM AND 7.9870 MILLIMETERS MAXIMUM MM |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 1100 MEGAPASCALS |
| 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 |
| Reference | Meaning |
|---|---|
| 1189226-8-64 | 3/2 Design control — primary reference U.S. Government activity |
| 1189226-8-64 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 122410-8-64 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 122410-8-64 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-127-1083 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-127-1083: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 5.35 MILLIMETERS MINIMUM AND 5.65 MILLIMETERS MAXIMUM MM. 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.