The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-006-4597, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Capy Machine Shop Inc. Dba Capy Machine Shop Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-006-4597 |
| Primary Part Number | A51C43506-13 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Capy Machine Shop Inc. Dba Capy Machine Shop Inc |
| Status | ACTIVE |
| Head Height | 0.140 INCHES NOMINAL IN |
| Fastener Length | 3.054 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Concentric Hole Depth | 2.500 INCHES NOMINAL IN |
| Thread Length | 0.388 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.000 INCHES NOMINAL IN |
| Shoulder Diameter | 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.374 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 410 OVERALL |
| Shoulder Length | 2.675 INCHES MINIMUM AND 2.685 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.926 INCHES MINIMUM AND 2.936 INCHES MAXIMUM FIRST HOLE IN |
| 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 |
|---|---|
| A51C43506-13 | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| Reference | Meaning |
|---|---|
| A51C43506-13 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| A51C43506-13 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51C43506-13 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51C43506 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 5306-00-006-4597 is a Bolt,internally Relieved Body, manufactured by Capy Machine Shop Inc. Dba Capy Machine Shop Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-006-4597 has 1 manufacturer part number on file: A51C43506-13 (Capy Machine Shop Inc. Dba Capy Machine Shop Inc).
Key specifications for A51C43506-13: Head Height: 0.140 INCHES NOMINAL IN; Fastener Length: 3.054 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Concentric Hole Depth: 2.500 INCHES NOMINAL 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.