The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-159-8552, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-159-8552 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 0.8 MICROMETERS THREADS |
| Surface Finish | 0.8 MICROMETERS BEARING SURFACE OF HEAD |
| Surface Finish | 0.8 MICROMETERS GRIP |
| Head Height | 3.2 MILLIMETERS MINIMUM AND 3.5 MILLIMETERS MAXIMUM MM |
| Fastener Length | 139.70 MILLIMETERS MINIMUM AND 140.30 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 9.5 MILLIMETERS MINIMUM AND 10.5 MILLIMETERS MAXIMUM MM |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Head Style | UNDERCUT HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NA0036 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 129.80 MILLIMETERS MINIMUM AND 130.20 MILLIMETERS MAXIMUM MM |
| Width Between Flats | 9.8 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM |
| Grip Diameter | 5.9650 MILLIMETERS MINIMUM AND 5.9900 MILLIMETERS MAXIMUM MM |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 1100 MEGAPASCALS |
| Material | STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | MJ |
| 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 |
|---|---|
| 10087947 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| NA0036-060130 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-159-8552 is a Bolt,close Tolerance, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-159-8552: Surface Finish: 0.8 MICROMETERS THREADS; Surface Finish: 0.8 MICROMETERS BEARING SURFACE OF HEAD; Surface Finish: 0.8 MICROMETERS GRIP; Head Height: 3.2 MILLIMETERS MINIMUM AND 3.5 MILLIMETERS MAXIMUM MM. 21 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.