The Bolt,machine, cataloged under National Stock Number 5306-01-144-3077, 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21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-144-3077 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.365 INCHES MINIMUM AND 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM0.385 INCHES MAXIMUM IN |
| Fastener Length | 2.953 INCHES MINIMUM AND 2.953 INCHES MINIMUM AND 3.000 INCHES MAXIMUM3.000 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 2.893 INCHES MINIMUM AND 2.893 INCHES MINIMUM AND 2.970 INCHES MAXIMUM2.970 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL40.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON CORNERSHEXAGON CORNERS |
| Nominal Thread Diameter | 0.500 INCHES0.500 INCHES IN |
| Features Provided | FINISHED HEADFINISHED HEAD |
| Head Style | HEXAGONHEXAGON |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Specification/standard Data | 80205-NAS568 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD80205-NAS568 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.740 INCHES MINIMUM AND 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM0.752 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CADMIUM AND CHROMATE OVERALLCHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A3A |
| Thread Quantity Per Inch | 2020 |
| Material | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| Hole Quantity | 33 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLEDDRILLED |
| Hole Diameter | 0.070 INCHES MINIMUM AND 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM0.080 INCHES MAXIMUM IN |
| 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 |
|---|---|
| NAS568-95 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-144-3077 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-144-3077: Head Height: 0.365 INCHES MINIMUM AND 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM0.385 INCHES MAXIMUM IN; Fastener Length: 2.953 INCHES MINIMUM AND 2.953 INCHES MINIMUM AND 3.000 INCHES MAXIMUM3.000 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 2.893 INCHES MINIMUM AND 2.893 INCHES MINIMUM AND 2.970 INCHES MAXIMUM2.970 INCHES MAXIMUM IN. 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.